./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/list_flag-2.i --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_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/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 e2748dac41bc6cdd06fa5d8793326edbc7d40c79 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/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 e2748dac41bc6cdd06fa5d8793326edbc7d40c79 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:19:27,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:19:27,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:19:27,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:19:28,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:19:28,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:19:28,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:19:28,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:19:28,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:19:28,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:19:28,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:19:28,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:19:28,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:19:28,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:19:28,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:19:28,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:19:28,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:19:28,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:19:28,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:19:28,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:19:28,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:19:28,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:19:28,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:19:28,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:19:28,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:19:28,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:19:28,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:19:28,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:19:28,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:19:28,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:19:28,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:19:28,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:19:28,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:19:28,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:19:28,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:19:28,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:19:28,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:19:28,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:19:28,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:19:28,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:19:28,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:19:28,099 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:19:28,140 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:19:28,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:19:28,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:19:28,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:19:28,143 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:19:28,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:19:28,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:19:28,144 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:19:28,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:19:28,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:19:28,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:19:28,146 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:19:28,147 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:19:28,147 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:19:28,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:19:28,147 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:19:28,148 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:19:28,148 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:19:28,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:19:28,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:19:28,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:19:28,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:19:28,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:19:28,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:19:28,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:19:28,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:19:28,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:19:28,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:19:28,152 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_6220eb53-a5e4-4e57-83e5-93b426d5268f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2748dac41bc6cdd06fa5d8793326edbc7d40c79 [2020-11-28 03:19:28,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:19:28,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:19:28,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:19:28,510 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:19:28,511 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:19:28,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/../../sv-benchmarks/c/list-properties/list_flag-2.i [2020-11-28 03:19:28,596 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/data/ab9b15d3d/6643a347e6c74c298d56d89129063b40/FLAG90c8baecc [2020-11-28 03:19:29,211 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:19:29,212 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/sv-benchmarks/c/list-properties/list_flag-2.i [2020-11-28 03:19:29,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/data/ab9b15d3d/6643a347e6c74c298d56d89129063b40/FLAG90c8baecc [2020-11-28 03:19:29,470 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/data/ab9b15d3d/6643a347e6c74c298d56d89129063b40 [2020-11-28 03:19:29,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:19:29,475 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:19:29,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:29,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:19:29,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:19:29,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:29" (1/1) ... [2020-11-28 03:19:29,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f4e20b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:29, skipping insertion in model container [2020-11-28 03:19:29,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:29" (1/1) ... [2020-11-28 03:19:29,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:19:29,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:19:29,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:29,960 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:19:30,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:30,078 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:19:30,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30 WrapperNode [2020-11-28 03:19:30,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:30,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:19:30,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:19:30,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:19:30,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... [2020-11-28 03:19:30,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... [2020-11-28 03:19:30,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... [2020-11-28 03:19:30,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... [2020-11-28 03:19:30,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... [2020-11-28 03:19:30,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... [2020-11-28 03:19:30,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... [2020-11-28 03:19:30,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:19:30,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:19:30,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:19:30,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:19:30,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/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 03:19:30,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:19:30,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:19:30,224 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 03:19:30,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 03:19:30,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 03:19:30,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 03:19:30,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 03:19:30,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 03:19:30,227 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-28 03:19:30,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:19:30,229 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:19:30,229 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 03:19:30,229 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-28 03:19:30,229 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-28 03:19:30,230 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 03:19:30,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:19:30,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:19:30,230 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 03:19:30,230 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 03:19:30,230 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 03:19:30,231 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 03:19:30,231 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 03:19:30,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 03:19:30,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 03:19:30,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 03:19:30,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 03:19:30,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 03:19:30,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 03:19:30,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 03:19:30,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 03:19:30,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 03:19:30,233 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 03:19:30,233 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 03:19:30,233 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 03:19:30,233 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 03:19:30,233 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 03:19:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 03:19:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 03:19:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 03:19:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 03:19:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 03:19:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 03:19:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 03:19:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 03:19:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 03:19:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 03:19:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 03:19:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 03:19:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 03:19:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 03:19:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 03:19:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 03:19:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 03:19:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 03:19:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 03:19:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 03:19:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 03:19:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 03:19:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 03:19:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 03:19:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 03:19:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 03:19:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 03:19:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 03:19:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 03:19:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 03:19:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 03:19:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 03:19:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 03:19:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 03:19:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 03:19:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 03:19:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 03:19:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 03:19:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 03:19:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 03:19:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 03:19:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 03:19:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 03:19:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 03:19:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 03:19:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 03:19:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 03:19:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 03:19:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 03:19:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 03:19:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 03:19:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 03:19:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 03:19:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 03:19:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 03:19:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 03:19:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 03:19:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 03:19:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 03:19:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 03:19:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 03:19:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 03:19:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 03:19:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 03:19:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 03:19:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 03:19:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 03:19:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 03:19:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 03:19:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 03:19:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 03:19:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 03:19:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 03:19:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 03:19:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 03:19:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 03:19:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 03:19:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 03:19:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 03:19:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 03:19:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 03:19:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 03:19:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 03:19:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 03:19:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 03:19:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 03:19:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 03:19:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-28 03:19:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:19:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:19:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:19:30,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 03:19:30,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 03:19:30,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:19:30,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:19:30,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:19:30,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:19:30,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:19:30,667 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-28 03:19:31,027 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:19:31,027 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-28 03:19:31,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:31 BoogieIcfgContainer [2020-11-28 03:19:31,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:19:31,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:19:31,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:19:31,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:19:31,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:19:29" (1/3) ... [2020-11-28 03:19:31,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a7d8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:19:31, skipping insertion in model container [2020-11-28 03:19:31,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:30" (2/3) ... [2020-11-28 03:19:31,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a7d8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:19:31, skipping insertion in model container [2020-11-28 03:19:31,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:31" (3/3) ... [2020-11-28 03:19:31,048 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2020-11-28 03:19:31,059 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:19:31,067 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 22 error locations. [2020-11-28 03:19:31,078 INFO L253 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2020-11-28 03:19:31,098 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:19:31,098 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:19:31,098 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:19:31,098 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:19:31,099 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:19:31,099 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:19:31,099 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:19:31,099 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:19:31,117 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-11-28 03:19:31,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:19:31,126 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:31,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:31,128 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:19:31,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:31,135 INFO L82 PathProgramCache]: Analyzing trace with hash 884508361, now seen corresponding path program 1 times [2020-11-28 03:19:31,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:31,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500381482] [2020-11-28 03:19:31,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:31,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:19:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:31,503 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 03:19:31,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500381482] [2020-11-28 03:19:31,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:31,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:31,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48362708] [2020-11-28 03:19:31,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:19:31,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:31,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:19:31,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:19:31,545 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 3 states. [2020-11-28 03:19:31,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:31,776 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-11-28 03:19:31,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:19:31,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-28 03:19:31,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:31,788 INFO L225 Difference]: With dead ends: 64 [2020-11-28 03:19:31,788 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 03:19:31,790 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 03:19:31,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 03:19:31,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-28 03:19:31,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 03:19:31,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-11-28 03:19:31,843 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 10 [2020-11-28 03:19:31,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:31,843 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-11-28 03:19:31,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:19:31,844 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-11-28 03:19:31,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:19:31,847 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:31,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:31,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:19:31,848 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:19:31,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:31,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1649921759, now seen corresponding path program 1 times [2020-11-28 03:19:31,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:31,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170819151] [2020-11-28 03:19:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:31,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:19:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:32,010 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 03:19:32,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170819151] [2020-11-28 03:19:32,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:32,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:19:32,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481433763] [2020-11-28 03:19:32,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:19:32,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:32,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:19:32,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:19:32,026 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 5 states. [2020-11-28 03:19:32,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:32,301 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2020-11-28 03:19:32,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:19:32,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 03:19:32,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:32,305 INFO L225 Difference]: With dead ends: 65 [2020-11-28 03:19:32,305 INFO L226 Difference]: Without dead ends: 65 [2020-11-28 03:19:32,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:19:32,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-28 03:19:32,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2020-11-28 03:19:32,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-28 03:19:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-11-28 03:19:32,322 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 11 [2020-11-28 03:19:32,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:32,323 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-11-28 03:19:32,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:19:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-11-28 03:19:32,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:19:32,324 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:32,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:32,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:19:32,324 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:19:32,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:32,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1649921760, now seen corresponding path program 1 times [2020-11-28 03:19:32,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:32,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317569393] [2020-11-28 03:19:32,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:32,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:19:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:32,494 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 03:19:32,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317569393] [2020-11-28 03:19:32,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:32,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:19:32,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962935507] [2020-11-28 03:19:32,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:19:32,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:32,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:19:32,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:19:32,523 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 5 states. [2020-11-28 03:19:32,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:32,805 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2020-11-28 03:19:32,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:19:32,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 03:19:32,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:32,808 INFO L225 Difference]: With dead ends: 77 [2020-11-28 03:19:32,808 INFO L226 Difference]: Without dead ends: 77 [2020-11-28 03:19:32,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:19:32,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-28 03:19:32,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2020-11-28 03:19:32,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-28 03:19:32,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2020-11-28 03:19:32,825 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 11 [2020-11-28 03:19:32,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:32,826 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2020-11-28 03:19:32,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:19:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2020-11-28 03:19:32,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:19:32,828 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:32,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:32,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:19:32,829 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:19:32,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:32,830 INFO L82 PathProgramCache]: Analyzing trace with hash -590364418, now seen corresponding path program 1 times [2020-11-28 03:19:32,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:32,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868710834] [2020-11-28 03:19:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:32,880 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:32,911 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:32,954 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:19:32,954 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:19:32,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:19:32,972 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-28 03:19:32,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:19:32 BoogieIcfgContainer [2020-11-28 03:19:32,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:19:32,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:19:32,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:19:32,987 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:19:32,988 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:31" (3/4) ... [2020-11-28 03:19:32,992 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:19:32,992 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:19:32,994 INFO L168 Benchmark]: Toolchain (without parser) took 3517.62 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 63.5 MB in the beginning and 70.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:32,995 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 98.6 MB. Free memory was 69.9 MB in the beginning and 69.9 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:32,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.79 ms. Allocated memory is still 98.6 MB. Free memory was 63.3 MB in the beginning and 63.5 MB in the end (delta: -117.4 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:32,997 INFO L168 Benchmark]: Boogie Preprocessor took 63.18 ms. Allocated memory is still 98.6 MB. Free memory was 63.4 MB in the beginning and 60.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:32,997 INFO L168 Benchmark]: RCFGBuilder took 882.49 ms. Allocated memory is still 98.6 MB. Free memory was 60.7 MB in the beginning and 52.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:32,999 INFO L168 Benchmark]: TraceAbstraction took 1955.76 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 51.5 MB in the beginning and 70.0 MB in the end (delta: -18.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:32,999 INFO L168 Benchmark]: Witness Printer took 4.72 ms. Allocated memory is still 125.8 MB. Free memory is still 70.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:33,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 98.6 MB. Free memory was 69.9 MB in the beginning and 69.9 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 600.79 ms. Allocated memory is still 98.6 MB. Free memory was 63.3 MB in the beginning and 63.5 MB in the end (delta: -117.4 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.18 ms. Allocated memory is still 98.6 MB. Free memory was 63.4 MB in the beginning and 60.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 882.49 ms. Allocated memory is still 98.6 MB. Free memory was 60.7 MB in the beginning and 52.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1955.76 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 51.5 MB in the beginning and 70.0 MB in the end (delta: -18.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.72 ms. Allocated memory is still 125.8 MB. Free memory is still 70.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}] [L535] COND FALSE !(a == 0) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}] [L536] p = a VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L549] p = a VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L550] COND FALSE !(\read(flag)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L554] EXPR p->h VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 83 locations, 22 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 122 SDtfs, 194 SDslu, 42 SDs, 0 SdLazy, 277 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=3, 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, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 1577 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:19:35,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:19:35,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:19:35,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:19:35,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:19:35,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:19:35,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:19:35,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:19:35,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:19:35,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:19:35,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:19:35,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:19:35,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:19:35,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:19:35,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:19:35,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:19:35,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:19:35,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:19:35,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:19:35,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:19:35,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:19:35,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:19:35,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:19:35,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:19:35,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:19:35,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:19:35,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:19:35,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:19:35,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:19:35,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:19:35,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:19:35,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:19:35,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:19:35,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:19:35,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:19:35,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:19:35,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:19:35,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:19:35,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:19:35,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:19:35,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:19:35,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-11-28 03:19:35,915 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:19:35,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:19:35,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:19:35,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:19:35,917 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:19:35,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:19:35,917 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:19:35,917 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:19:35,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:19:35,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:19:35,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:19:35,918 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:19:35,918 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:19:35,918 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:19:35,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:19:35,919 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:19:35,919 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:19:35,919 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:19:35,919 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:19:35,919 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:19:35,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:19:35,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:19:35,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:19:35,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:19:35,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:19:35,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:19:35,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:19:35,921 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:19:35,921 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:19:35,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:19:35,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:19:35,932 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_6220eb53-a5e4-4e57-83e5-93b426d5268f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2748dac41bc6cdd06fa5d8793326edbc7d40c79 [2020-11-28 03:19:36,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:19:36,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:19:36,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:19:36,420 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:19:36,421 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:19:36,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/../../sv-benchmarks/c/list-properties/list_flag-2.i [2020-11-28 03:19:36,513 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/data/fb02a518c/eb4739425f7d48aea00822440095b71f/FLAGcd400e74b [2020-11-28 03:19:37,256 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:19:37,257 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/sv-benchmarks/c/list-properties/list_flag-2.i [2020-11-28 03:19:37,283 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/data/fb02a518c/eb4739425f7d48aea00822440095b71f/FLAGcd400e74b [2020-11-28 03:19:37,483 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/data/fb02a518c/eb4739425f7d48aea00822440095b71f [2020-11-28 03:19:37,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:19:37,488 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:19:37,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:37,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:19:37,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:19:37,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:37" (1/1) ... [2020-11-28 03:19:37,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cdf1a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:37, skipping insertion in model container [2020-11-28 03:19:37,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:37" (1/1) ... [2020-11-28 03:19:37,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:19:37,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:19:37,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:37,907 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:19:38,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:38,091 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:19:38,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:38 WrapperNode [2020-11-28 03:19:38,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:38,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:19:38,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:19:38,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:19:38,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:38" (1/1) ... [2020-11-28 03:19:38,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:38" (1/1) ... [2020-11-28 03:19:38,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:38" (1/1) ... [2020-11-28 03:19:38,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:38" (1/1) ... [2020-11-28 03:19:38,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:38" (1/1) ... [2020-11-28 03:19:38,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:38" (1/1) ... [2020-11-28 03:19:38,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:38" (1/1) ... [2020-11-28 03:19:38,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:19:38,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:19:38,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:19:38,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:19:38,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/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 03:19:38,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:19:38,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:19:38,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-11-28 03:19:38,309 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 03:19:38,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 03:19:38,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 03:19:38,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 03:19:38,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 03:19:38,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 03:19:38,311 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-28 03:19:38,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:19:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:19:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 03:19:38,312 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-28 03:19:38,312 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-28 03:19:38,312 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 03:19:38,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:19:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:19:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 03:19:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 03:19:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 03:19:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 03:19:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 03:19:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 03:19:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 03:19:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 03:19:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 03:19:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 03:19:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 03:19:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 03:19:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 03:19:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 03:19:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 03:19:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 03:19:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 03:19:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 03:19:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 03:19:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 03:19:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 03:19:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 03:19:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 03:19:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 03:19:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 03:19:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 03:19:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 03:19:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 03:19:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 03:19:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 03:19:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 03:19:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 03:19:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 03:19:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 03:19:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 03:19:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 03:19:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 03:19:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 03:19:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 03:19:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 03:19:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 03:19:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 03:19:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 03:19:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 03:19:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 03:19:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 03:19:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 03:19:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 03:19:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 03:19:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 03:19:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 03:19:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 03:19:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 03:19:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 03:19:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 03:19:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 03:19:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 03:19:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 03:19:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 03:19:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 03:19:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 03:19:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 03:19:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 03:19:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 03:19:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 03:19:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 03:19:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 03:19:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 03:19:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 03:19:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 03:19:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 03:19:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 03:19:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 03:19:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 03:19:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 03:19:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 03:19:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 03:19:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 03:19:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 03:19:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 03:19:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 03:19:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 03:19:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 03:19:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 03:19:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 03:19:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 03:19:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 03:19:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 03:19:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 03:19:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 03:19:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 03:19:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 03:19:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 03:19:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 03:19:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 03:19:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 03:19:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 03:19:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 03:19:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 03:19:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 03:19:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 03:19:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 03:19:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 03:19:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 03:19:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 03:19:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 03:19:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-28 03:19:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:19:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:19:38,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 03:19:38,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 03:19:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 03:19:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:19:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:19:38,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:19:38,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:19:38,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-11-28 03:19:38,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-11-28 03:19:38,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-11-28 03:19:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:19:39,183 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-28 03:19:39,684 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:19:39,684 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-28 03:19:39,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:39 BoogieIcfgContainer [2020-11-28 03:19:39,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:19:39,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:19:39,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:19:39,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:19:39,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:19:37" (1/3) ... [2020-11-28 03:19:39,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71809a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:19:39, skipping insertion in model container [2020-11-28 03:19:39,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:38" (2/3) ... [2020-11-28 03:19:39,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71809a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:19:39, skipping insertion in model container [2020-11-28 03:19:39,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:39" (3/3) ... [2020-11-28 03:19:39,704 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2020-11-28 03:19:39,718 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:19:39,724 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 22 error locations. [2020-11-28 03:19:39,739 INFO L253 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2020-11-28 03:19:39,781 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:19:39,782 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:19:39,782 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:19:39,782 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:19:39,782 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:19:39,782 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:19:39,783 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:19:39,783 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:19:39,806 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-11-28 03:19:39,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:19:39,825 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:39,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:39,826 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:19:39,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:39,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1710436202, now seen corresponding path program 1 times [2020-11-28 03:19:39,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:19:39,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799188793] [2020-11-28 03:19:39,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 03:19:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:40,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:19:40,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:40,123 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 03:19:40,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:19:40,149 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 03:19:40,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799188793] [2020-11-28 03:19:40,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:40,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:19:40,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059904693] [2020-11-28 03:19:40,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:19:40,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:19:40,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:19:40,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:19:40,176 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2020-11-28 03:19:40,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:40,198 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-11-28 03:19:40,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:19:40,199 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 03:19:40,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:40,213 INFO L225 Difference]: With dead ends: 63 [2020-11-28 03:19:40,214 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 03:19:40,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:19:40,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 03:19:40,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-28 03:19:40,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 03:19:40,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-11-28 03:19:40,274 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 10 [2020-11-28 03:19:40,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:40,274 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-11-28 03:19:40,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:19:40,275 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-11-28 03:19:40,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:19:40,275 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:40,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:40,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:19:40,490 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:19:40,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:40,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1710435241, now seen corresponding path program 1 times [2020-11-28 03:19:40,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:19:40,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436224403] [2020-11-28 03:19:40,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 03:19:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:40,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:19:40,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:40,878 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 03:19:40,879 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:19:40,908 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:19:40,909 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:19:40,909 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-28 03:19:40,929 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 03:19:40,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:19:41,002 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 03:19:41,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436224403] [2020-11-28 03:19:41,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:41,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:19:41,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693196554] [2020-11-28 03:19:41,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:19:41,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:19:41,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:19:41,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:19:41,006 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 4 states. [2020-11-28 03:19:41,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:41,406 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-11-28 03:19:41,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:19:41,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:19:41,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:41,410 INFO L225 Difference]: With dead ends: 63 [2020-11-28 03:19:41,410 INFO L226 Difference]: Without dead ends: 63 [2020-11-28 03:19:41,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:19:41,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-28 03:19:41,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2020-11-28 03:19:41,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-28 03:19:41,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-11-28 03:19:41,431 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 10 [2020-11-28 03:19:41,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:41,433 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-11-28 03:19:41,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:19:41,439 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-11-28 03:19:41,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:19:41,440 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:41,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:41,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:19:41,649 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:19:41,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:41,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1710435242, now seen corresponding path program 1 times [2020-11-28 03:19:41,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:19:41,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198196207] [2020-11-28 03:19:41,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 03:19:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:41,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:19:41,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:41,918 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 03:19:41,918 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:19:41,927 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:19:41,927 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:19:41,928 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-28 03:19:41,963 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 03:19:41,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:19:42,102 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 03:19:42,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198196207] [2020-11-28 03:19:42,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:42,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 03:19:42,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16110430] [2020-11-28 03:19:42,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:19:42,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:19:42,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:19:42,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:19:42,104 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 6 states. [2020-11-28 03:19:42,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:42,707 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2020-11-28 03:19:42,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:19:42,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 03:19:42,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:42,711 INFO L225 Difference]: With dead ends: 74 [2020-11-28 03:19:42,711 INFO L226 Difference]: Without dead ends: 74 [2020-11-28 03:19:42,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:19:42,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-28 03:19:42,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2020-11-28 03:19:42,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-28 03:19:42,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-11-28 03:19:42,721 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 10 [2020-11-28 03:19:42,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:42,721 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-11-28 03:19:42,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:19:42,721 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-11-28 03:19:42,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:19:42,722 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:42,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:42,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:19:42,929 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:19:42,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:42,930 INFO L82 PathProgramCache]: Analyzing trace with hash -544900418, now seen corresponding path program 1 times [2020-11-28 03:19:42,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:19:42,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646928767] [2020-11-28 03:19:42,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6220eb53-a5e4-4e57-83e5-93b426d5268f/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 03:19:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:43,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:43,170 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:43,209 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:19:43,209 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:19:43,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 03:19:43,426 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-28 03:19:43,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:19:43 BoogieIcfgContainer [2020-11-28 03:19:43,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:19:43,447 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:19:43,448 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:19:43,448 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:19:43,448 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:39" (3/4) ... [2020-11-28 03:19:43,452 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:19:43,452 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:19:43,455 INFO L168 Benchmark]: Toolchain (without parser) took 5966.01 ms. Allocated memory was 67.1 MB in the beginning and 115.3 MB in the end (delta: 48.2 MB). Free memory was 46.8 MB in the beginning and 43.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 52.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:43,456 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 67.1 MB. Free memory was 49.4 MB in the beginning and 49.3 MB in the end (delta: 43.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:43,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 603.24 ms. Allocated memory is still 67.1 MB. Free memory was 46.5 MB in the beginning and 38.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:43,461 INFO L168 Benchmark]: Boogie Preprocessor took 122.73 ms. Allocated memory is still 67.1 MB. Free memory was 38.5 MB in the beginning and 35.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:43,469 INFO L168 Benchmark]: RCFGBuilder took 1475.88 ms. Allocated memory was 67.1 MB in the beginning and 94.4 MB in the end (delta: 27.3 MB). Free memory was 35.3 MB in the beginning and 59.3 MB in the end (delta: -24.0 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:43,470 INFO L168 Benchmark]: TraceAbstraction took 3751.28 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 59.3 MB in the beginning and 43.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 37.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:43,470 INFO L168 Benchmark]: Witness Printer took 5.12 ms. Allocated memory is still 115.3 MB. Free memory is still 43.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:43,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 67.1 MB. Free memory was 49.4 MB in the beginning and 49.3 MB in the end (delta: 43.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 603.24 ms. Allocated memory is still 67.1 MB. Free memory was 46.5 MB in the beginning and 38.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 122.73 ms. Allocated memory is still 67.1 MB. Free memory was 38.5 MB in the beginning and 35.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1475.88 ms. Allocated memory was 67.1 MB in the beginning and 94.4 MB in the end (delta: 27.3 MB). Free memory was 35.3 MB in the beginning and 59.3 MB in the end (delta: -24.0 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3751.28 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 59.3 MB in the beginning and 43.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 37.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.12 ms. Allocated memory is still 115.3 MB. Free memory is still 43.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}] [L535] COND FALSE !(a == 0) VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}] [L536] p = a VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}] [L549] p = a VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}] [L550] COND TRUE \read(flag) VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}] [L551] EXPR p->h VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L551] COND FALSE !(p->h == 1) [L556] EXPR p->h VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 88 locations, 22 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 215 SDslu, 46 SDs, 0 SdLazy, 108 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred 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, 3 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1494 SizeOfPredicates, 8 NumberOfNonLiveVariables, 192 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...