./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/splice-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_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/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 cac090f4bce8d8ee66db31cac76f8c06713c6de9 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/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 cac090f4bce8d8ee66db31cac76f8c06713c6de9 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 03:11:04,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:11:04,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:11:04,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:11:04,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:11:04,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:11:04,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:11:04,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:11:04,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:11:04,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:11:04,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:11:04,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:11:04,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:11:04,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:11:04,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:11:04,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:11:04,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:11:04,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:11:04,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:11:04,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:11:04,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:11:04,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:11:04,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:11:04,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:11:04,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:11:04,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:11:04,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:11:04,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:11:04,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:11:04,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:11:04,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:11:04,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:11:04,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:11:04,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:11:04,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:11:04,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:11:04,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:11:04,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:11:04,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:11:04,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:11:04,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:11:04,940 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:11:04,963 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:11:04,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:11:04,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:11:04,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:11:04,970 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:11:04,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:11:04,970 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:11:04,971 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:11:04,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:11:04,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:11:04,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:11:04,973 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:11:04,973 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:11:04,973 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:11:04,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:11:04,974 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:11:04,974 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:11:04,974 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:11:04,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:11:04,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:11:04,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:11:04,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:11:04,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:11:04,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:11:04,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:11:04,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:11:04,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:11:04,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:11:04,977 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_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cac090f4bce8d8ee66db31cac76f8c06713c6de9 [2020-11-28 03:11:05,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:11:05,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:11:05,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:11:05,306 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:11:05,307 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:11:05,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/../../sv-benchmarks/c/list-properties/splice-2.i [2020-11-28 03:11:05,426 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/data/eaeca6ecc/e70141a15b7d45479cee735d8e5dc174/FLAGc614bde10 [2020-11-28 03:11:06,059 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:11:06,059 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/sv-benchmarks/c/list-properties/splice-2.i [2020-11-28 03:11:06,074 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/data/eaeca6ecc/e70141a15b7d45479cee735d8e5dc174/FLAGc614bde10 [2020-11-28 03:11:06,310 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/data/eaeca6ecc/e70141a15b7d45479cee735d8e5dc174 [2020-11-28 03:11:06,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:11:06,316 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:11:06,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:06,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:11:06,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:11:06,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:06" (1/1) ... [2020-11-28 03:11:06,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d82c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:06, skipping insertion in model container [2020-11-28 03:11:06,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:06" (1/1) ... [2020-11-28 03:11:06,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:11:06,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:11:06,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:06,808 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:11:06,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:06,940 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:11:06,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:06 WrapperNode [2020-11-28 03:11:06,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:06,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:11:06,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:11:06,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:11:06,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:06" (1/1) ... [2020-11-28 03:11:06,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:06" (1/1) ... [2020-11-28 03:11:06,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:06" (1/1) ... [2020-11-28 03:11:06,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:06" (1/1) ... [2020-11-28 03:11:06,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:06" (1/1) ... [2020-11-28 03:11:07,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:06" (1/1) ... [2020-11-28 03:11:07,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:06" (1/1) ... [2020-11-28 03:11:07,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:11:07,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:11:07,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:11:07,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:11:07,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/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 03:11:07,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:11:07,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:11:07,091 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 03:11:07,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 03:11:07,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 03:11:07,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 03:11:07,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 03:11:07,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 03:11:07,091 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-28 03:11:07,092 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:11:07,092 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:11:07,092 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 03:11:07,092 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-28 03:11:07,093 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-28 03:11:07,093 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 03:11:07,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:11:07,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:11:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 03:11:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 03:11:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 03:11:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 03:11:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 03:11:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 03:11:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 03:11:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 03:11:07,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 03:11:07,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 03:11:07,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 03:11:07,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 03:11:07,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 03:11:07,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 03:11:07,097 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 03:11:07,097 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 03:11:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 03:11:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 03:11:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 03:11:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 03:11:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 03:11:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 03:11:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 03:11:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 03:11:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 03:11:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 03:11:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 03:11:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 03:11:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 03:11:07,101 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 03:11:07,101 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 03:11:07,101 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 03:11:07,101 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 03:11:07,102 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 03:11:07,102 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 03:11:07,102 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 03:11:07,102 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 03:11:07,103 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 03:11:07,103 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 03:11:07,103 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 03:11:07,103 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 03:11:07,104 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 03:11:07,104 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 03:11:07,104 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 03:11:07,104 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 03:11:07,105 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 03:11:07,105 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 03:11:07,105 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 03:11:07,105 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 03:11:07,106 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 03:11:07,106 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 03:11:07,106 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 03:11:07,106 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 03:11:07,106 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 03:11:07,107 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 03:11:07,107 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 03:11:07,107 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 03:11:07,107 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 03:11:07,108 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 03:11:07,108 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 03:11:07,108 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 03:11:07,108 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 03:11:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 03:11:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 03:11:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 03:11:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 03:11:07,110 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 03:11:07,110 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 03:11:07,110 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 03:11:07,110 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 03:11:07,110 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 03:11:07,111 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 03:11:07,111 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 03:11:07,111 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 03:11:07,111 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 03:11:07,112 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 03:11:07,112 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 03:11:07,112 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 03:11:07,112 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 03:11:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 03:11:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 03:11:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 03:11:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 03:11:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 03:11:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 03:11:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 03:11:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 03:11:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 03:11:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 03:11:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 03:11:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 03:11:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 03:11:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 03:11:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 03:11:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 03:11:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 03:11:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 03:11:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 03:11:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 03:11:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 03:11:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 03:11:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 03:11:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 03:11:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 03:11:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 03:11:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 03:11:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-28 03:11:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:11:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:11:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:11:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 03:11:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 03:11:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:11:07,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:11:07,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:11:07,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:11:07,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:11:07,611 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-28 03:11:08,013 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:11:08,014 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-28 03:11:08,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:08 BoogieIcfgContainer [2020-11-28 03:11:08,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:11:08,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:11:08,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:11:08,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:11:08,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:11:06" (1/3) ... [2020-11-28 03:11:08,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c3292a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:08, skipping insertion in model container [2020-11-28 03:11:08,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:06" (2/3) ... [2020-11-28 03:11:08,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c3292a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:08, skipping insertion in model container [2020-11-28 03:11:08,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:08" (3/3) ... [2020-11-28 03:11:08,028 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2020-11-28 03:11:08,041 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:11:08,046 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 30 error locations. [2020-11-28 03:11:08,056 INFO L253 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2020-11-28 03:11:08,077 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:11:08,077 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:11:08,077 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:11:08,078 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:11:08,078 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:11:08,078 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:11:08,078 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:11:08,078 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:11:08,098 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-11-28 03:11:08,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:11:08,113 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:08,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:08,114 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:11:08,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:08,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1115108894, now seen corresponding path program 1 times [2020-11-28 03:11:08,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:08,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723167111] [2020-11-28 03:11:08,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:08,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:11:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:08,402 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 03:11:08,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723167111] [2020-11-28 03:11:08,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:08,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:11:08,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132687752] [2020-11-28 03:11:08,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:11:08,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:08,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:11:08,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:11:08,430 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 3 states. [2020-11-28 03:11:08,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:08,726 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-11-28 03:11:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:11:08,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-28 03:11:08,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:08,743 INFO L225 Difference]: With dead ends: 86 [2020-11-28 03:11:08,743 INFO L226 Difference]: Without dead ends: 79 [2020-11-28 03:11:08,745 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 03:11:08,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-28 03:11:08,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-11-28 03:11:08,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-11-28 03:11:08,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2020-11-28 03:11:08,797 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 10 [2020-11-28 03:11:08,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:08,797 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2020-11-28 03:11:08,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:11:08,798 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2020-11-28 03:11:08,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:11:08,798 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:08,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:08,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:11:08,799 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:11:08,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:08,800 INFO L82 PathProgramCache]: Analyzing trace with hash -208672984, now seen corresponding path program 1 times [2020-11-28 03:11:08,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:08,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643225344] [2020-11-28 03:11:08,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:08,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:11:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:08,949 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 03:11:08,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643225344] [2020-11-28 03:11:08,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:08,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:11:08,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332648495] [2020-11-28 03:11:08,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:11:08,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:08,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:11:08,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:11:08,957 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand 5 states. [2020-11-28 03:11:09,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:09,278 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-11-28 03:11:09,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:11:09,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 03:11:09,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:09,280 INFO L225 Difference]: With dead ends: 86 [2020-11-28 03:11:09,280 INFO L226 Difference]: Without dead ends: 86 [2020-11-28 03:11:09,281 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 03:11:09,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-28 03:11:09,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2020-11-28 03:11:09,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-28 03:11:09,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2020-11-28 03:11:09,296 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 11 [2020-11-28 03:11:09,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:09,296 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2020-11-28 03:11:09,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:11:09,296 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2020-11-28 03:11:09,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:11:09,297 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:09,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:09,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:11:09,298 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:11:09,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:09,298 INFO L82 PathProgramCache]: Analyzing trace with hash -208672983, now seen corresponding path program 1 times [2020-11-28 03:11:09,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:09,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593876486] [2020-11-28 03:11:09,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:09,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:11:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:09,427 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 03:11:09,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593876486] [2020-11-28 03:11:09,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:09,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:11:09,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168191793] [2020-11-28 03:11:09,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:11:09,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:09,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:11:09,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:11:09,444 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand 5 states. [2020-11-28 03:11:09,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:09,737 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2020-11-28 03:11:09,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:11:09,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 03:11:09,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:09,739 INFO L225 Difference]: With dead ends: 94 [2020-11-28 03:11:09,739 INFO L226 Difference]: Without dead ends: 94 [2020-11-28 03:11:09,740 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 03:11:09,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-28 03:11:09,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 87. [2020-11-28 03:11:09,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-28 03:11:09,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2020-11-28 03:11:09,756 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 11 [2020-11-28 03:11:09,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:09,757 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2020-11-28 03:11:09,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:11:09,757 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2020-11-28 03:11:09,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:11:09,758 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:09,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:09,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:11:09,759 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:11:09,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:09,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1759143106, now seen corresponding path program 1 times [2020-11-28 03:11:09,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:09,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549263904] [2020-11-28 03:11:09,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:09,815 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:09,845 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:09,880 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:09,881 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:11:09,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:11:09,900 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-28 03:11:09,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:11:09 BoogieIcfgContainer [2020-11-28 03:11:09,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:11:09,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:11:09,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:11:09,914 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:11:09,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:08" (3/4) ... [2020-11-28 03:11:09,917 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:11:09,918 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:11:09,920 INFO L168 Benchmark]: Toolchain (without parser) took 3602.86 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 50.6 MB in the beginning and 50.3 MB in the end (delta: 300.4 kB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:09,921 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 83.9 MB. Free memory was 42.4 MB in the beginning and 42.3 MB in the end (delta: 30.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:09,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.50 ms. Allocated memory is still 83.9 MB. Free memory was 50.4 MB in the beginning and 48.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:09,922 INFO L168 Benchmark]: Boogie Preprocessor took 75.79 ms. Allocated memory is still 83.9 MB. Free memory was 48.8 MB in the beginning and 45.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:09,923 INFO L168 Benchmark]: RCFGBuilder took 996.92 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 45.8 MB in the beginning and 41.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:09,924 INFO L168 Benchmark]: TraceAbstraction took 1894.01 ms. Allocated memory is still 100.7 MB. Free memory was 40.5 MB in the beginning and 50.3 MB in the end (delta: -9.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:09,924 INFO L168 Benchmark]: Witness Printer took 4.53 ms. Allocated memory is still 100.7 MB. Free memory is still 50.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:09,928 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 83.9 MB. Free memory was 42.4 MB in the beginning and 42.3 MB in the end (delta: 30.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 624.50 ms. Allocated memory is still 83.9 MB. Free memory was 50.4 MB in the beginning and 48.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.79 ms. Allocated memory is still 83.9 MB. Free memory was 48.8 MB in the beginning and 45.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 996.92 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 45.8 MB in the beginning and 41.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1894.01 ms. Allocated memory is still 100.7 MB. Free memory was 40.5 MB in the beginning and 50.3 MB in the end (delta: -9.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.53 ms. Allocated memory is still 100.7 MB. Free memory is still 50.3 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 = 1; [L533] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L534] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L555] EXPR a->h VAL [a={-1:0}, a->h=3, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L555] COND TRUE a->h == 3 [L555] return 0; VAL [\result=0, a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 105 locations, 30 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 178 SDtfs, 233 SDslu, 58 SDs, 0 SdLazy, 395 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s 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=89occurred 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, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 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 03:11:12,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:11:12,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:11:12,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:11:12,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:11:12,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:11:12,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:11:12,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:11:12,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:11:12,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:11:12,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:11:12,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:11:12,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:11:12,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:11:12,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:11:12,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:11:12,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:11:12,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:11:12,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:11:12,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:11:12,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:11:12,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:11:12,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:11:12,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:11:12,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:11:12,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:11:12,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:11:12,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:11:12,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:11:12,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:11:12,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:11:12,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:11:12,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:11:12,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:11:12,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:11:12,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:11:12,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:11:12,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:11:12,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:11:12,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:11:12,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:11:12,801 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-11-28 03:11:12,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:11:12,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:11:12,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:11:12,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:11:12,852 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:11:12,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:11:12,852 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:11:12,853 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:11:12,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:11:12,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:11:12,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:11:12,855 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:11:12,855 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:11:12,855 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:11:12,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:11:12,856 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:11:12,856 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:11:12,856 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:11:12,856 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:11:12,858 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:11:12,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:11:12,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:11:12,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:11:12,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:11:12,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:11:12,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:11:12,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:11:12,880 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:11:12,881 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:11:12,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:11:12,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:11:12,881 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_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cac090f4bce8d8ee66db31cac76f8c06713c6de9 [2020-11-28 03:11:13,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:11:13,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:11:13,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:11:13,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:11:13,314 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:11:13,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/../../sv-benchmarks/c/list-properties/splice-2.i [2020-11-28 03:11:13,390 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/data/79f14c502/84ede535d9e14111bd476c2069a13eb2/FLAG5cc02e62a [2020-11-28 03:11:13,948 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:11:13,949 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/sv-benchmarks/c/list-properties/splice-2.i [2020-11-28 03:11:13,962 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/data/79f14c502/84ede535d9e14111bd476c2069a13eb2/FLAG5cc02e62a [2020-11-28 03:11:14,285 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/bin/uautomizer/data/79f14c502/84ede535d9e14111bd476c2069a13eb2 [2020-11-28 03:11:14,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:11:14,291 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:11:14,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:14,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:11:14,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:11:14,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:14" (1/1) ... [2020-11-28 03:11:14,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3874e5b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:14, skipping insertion in model container [2020-11-28 03:11:14,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:14" (1/1) ... [2020-11-28 03:11:14,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:11:14,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:11:14,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:14,772 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:11:14,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:14,899 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:11:14,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:14 WrapperNode [2020-11-28 03:11:14,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:14,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:11:14,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:11:14,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:11:14,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:14" (1/1) ... [2020-11-28 03:11:14,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:14" (1/1) ... [2020-11-28 03:11:14,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:14" (1/1) ... [2020-11-28 03:11:14,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:14" (1/1) ... [2020-11-28 03:11:14,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:14" (1/1) ... [2020-11-28 03:11:14,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:14" (1/1) ... [2020-11-28 03:11:15,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:14" (1/1) ... [2020-11-28 03:11:15,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:11:15,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:11:15,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:11:15,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:11:15,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/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 03:11:15,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:11:15,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:11:15,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-11-28 03:11:15,104 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 03:11:15,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 03:11:15,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 03:11:15,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 03:11:15,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 03:11:15,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 03:11:15,105 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-28 03:11:15,105 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:11:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:11:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 03:11:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-28 03:11:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-28 03:11:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 03:11:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:11:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:11:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 03:11:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 03:11:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 03:11:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 03:11:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 03:11:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 03:11:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 03:11:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 03:11:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 03:11:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 03:11:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 03:11:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 03:11:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 03:11:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 03:11:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 03:11:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 03:11:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 03:11:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 03:11:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 03:11:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 03:11:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 03:11:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 03:11:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 03:11:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 03:11:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 03:11:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 03:11:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 03:11:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 03:11:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 03:11:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 03:11:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 03:11:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 03:11:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 03:11:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 03:11:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 03:11:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 03:11:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 03:11:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 03:11:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 03:11:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 03:11:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 03:11:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 03:11:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 03:11:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 03:11:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 03:11:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 03:11:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 03:11:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 03:11:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 03:11:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 03:11:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 03:11:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 03:11:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 03:11:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 03:11:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 03:11:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 03:11:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 03:11:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 03:11:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 03:11:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 03:11:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 03:11:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 03:11:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 03:11:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 03:11:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 03:11:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 03:11:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 03:11:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 03:11:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 03:11:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 03:11:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 03:11:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 03:11:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 03:11:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 03:11:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 03:11:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 03:11:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 03:11:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 03:11:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 03:11:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 03:11:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 03:11:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 03:11:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 03:11:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 03:11:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 03:11:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 03:11:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 03:11:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 03:11:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 03:11:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 03:11:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 03:11:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 03:11:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 03:11:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 03:11:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 03:11:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 03:11:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 03:11:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 03:11:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 03:11:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 03:11:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 03:11:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 03:11:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 03:11:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 03:11:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 03:11:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 03:11:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-28 03:11:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:11:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:11:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 03:11:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 03:11:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 03:11:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:11:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:11:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:11:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:11:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-11-28 03:11:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-11-28 03:11:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-11-28 03:11:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:11:15,553 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-28 03:11:16,058 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:11:16,058 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-28 03:11:16,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:16 BoogieIcfgContainer [2020-11-28 03:11:16,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:11:16,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:11:16,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:11:16,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:11:16,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:11:14" (1/3) ... [2020-11-28 03:11:16,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8843f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:16, skipping insertion in model container [2020-11-28 03:11:16,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:14" (2/3) ... [2020-11-28 03:11:16,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8843f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:16, skipping insertion in model container [2020-11-28 03:11:16,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:16" (3/3) ... [2020-11-28 03:11:16,077 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2020-11-28 03:11:16,093 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:11:16,098 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 30 error locations. [2020-11-28 03:11:16,111 INFO L253 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2020-11-28 03:11:16,130 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:11:16,130 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:11:16,131 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:11:16,131 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:11:16,131 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:11:16,131 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:11:16,131 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:11:16,132 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:11:16,146 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-11-28 03:11:16,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:11:16,154 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:16,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:16,156 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:11:16,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:16,164 INFO L82 PathProgramCache]: Analyzing trace with hash -289182075, now seen corresponding path program 1 times [2020-11-28 03:11:16,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:11:16,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436966750] [2020-11-28 03:11:16,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/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 03:11:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:16,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:11:16,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:16,441 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 03:11:16,441 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:11:16,458 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:11:16,459 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:11:16,459 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-28 03:11:16,492 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 03:11:16,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:11:16,618 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 03:11:16,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436966750] [2020-11-28 03:11:16,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:16,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 03:11:16,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544347205] [2020-11-28 03:11:16,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:11:16,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:11:16,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:11:16,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:11:16,647 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 6 states. [2020-11-28 03:11:17,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:17,487 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2020-11-28 03:11:17,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:11:17,490 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 03:11:17,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:17,498 INFO L225 Difference]: With dead ends: 118 [2020-11-28 03:11:17,498 INFO L226 Difference]: Without dead ends: 108 [2020-11-28 03:11:17,499 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 03:11:17,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-28 03:11:17,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 91. [2020-11-28 03:11:17,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-28 03:11:17,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 108 transitions. [2020-11-28 03:11:17,539 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 108 transitions. Word has length 10 [2020-11-28 03:11:17,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:17,539 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 108 transitions. [2020-11-28 03:11:17,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:11:17,539 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 108 transitions. [2020-11-28 03:11:17,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:11:17,540 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:17,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:17,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:11:17,760 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:11:17,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:17,761 INFO L82 PathProgramCache]: Analyzing trace with hash -289182076, now seen corresponding path program 1 times [2020-11-28 03:11:17,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:11:17,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409228542] [2020-11-28 03:11:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/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 03:11:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:17,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:11:17,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:17,948 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 03:11:17,948 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:11:17,972 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:11:17,973 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:11:17,973 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-28 03:11:17,992 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 03:11:17,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:11:18,006 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 03:11:18,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409228542] [2020-11-28 03:11:18,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:18,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:11:18,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135537004] [2020-11-28 03:11:18,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:11:18,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:11:18,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:11:18,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:11:18,009 INFO L87 Difference]: Start difference. First operand 91 states and 108 transitions. Second operand 4 states. [2020-11-28 03:11:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:18,306 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2020-11-28 03:11:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:11:18,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:11:18,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:18,309 INFO L225 Difference]: With dead ends: 87 [2020-11-28 03:11:18,309 INFO L226 Difference]: Without dead ends: 87 [2020-11-28 03:11:18,310 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 03:11:18,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-28 03:11:18,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-11-28 03:11:18,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-28 03:11:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2020-11-28 03:11:18,326 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 10 [2020-11-28 03:11:18,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:18,327 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2020-11-28 03:11:18,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:11:18,327 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2020-11-28 03:11:18,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:11:18,327 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:18,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:18,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:11:18,528 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:11:18,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:18,529 INFO L82 PathProgramCache]: Analyzing trace with hash 681236439, now seen corresponding path program 1 times [2020-11-28 03:11:18,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:11:18,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692107746] [2020-11-28 03:11:18,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67abf100-47cd-4ecc-b0eb-5ef871dd4e4b/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 03:11:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:18,719 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:18,757 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:18,785 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:11:18,786 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:11:18,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:11:18,996 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-28 03:11:19,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:11:19 BoogieIcfgContainer [2020-11-28 03:11:19,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:11:19,011 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:11:19,011 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:11:19,012 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:11:19,012 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:16" (3/4) ... [2020-11-28 03:11:19,015 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:11:19,016 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:11:19,018 INFO L168 Benchmark]: Toolchain (without parser) took 4725.70 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 59.0 MB in the beginning and 57.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:19,019 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 75.5 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:19,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 607.25 ms. Allocated memory is still 75.5 MB. Free memory was 58.8 MB in the beginning and 45.3 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:19,021 INFO L168 Benchmark]: Boogie Preprocessor took 124.33 ms. Allocated memory is still 75.5 MB. Free memory was 45.3 MB in the beginning and 42.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:19,024 INFO L168 Benchmark]: RCFGBuilder took 1037.34 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 42.0 MB in the beginning and 55.5 MB in the end (delta: -13.5 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:19,030 INFO L168 Benchmark]: TraceAbstraction took 2941.58 ms. Allocated memory is still 92.3 MB. Free memory was 55.5 MB in the beginning and 57.5 MB in the end (delta: -2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:19,031 INFO L168 Benchmark]: Witness Printer took 5.06 ms. Allocated memory is still 92.3 MB. Free memory was 57.5 MB in the beginning and 57.2 MB in the end (delta: 289.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:19,037 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 75.5 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 607.25 ms. Allocated memory is still 75.5 MB. Free memory was 58.8 MB in the beginning and 45.3 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 124.33 ms. Allocated memory is still 75.5 MB. Free memory was 45.3 MB in the beginning and 42.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1037.34 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 42.0 MB in the beginning and 55.5 MB in the end (delta: -13.5 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2941.58 ms. Allocated memory is still 92.3 MB. Free memory was 55.5 MB in the beginning and 57.5 MB in the end (delta: -2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.06 ms. Allocated memory is still 92.3 MB. Free memory was 57.5 MB in the beginning and 57.2 MB in the end (delta: 289.3 kB). 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 = 1; [L533] List a = (List) malloc(sizeof(struct node)); VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}] [L534] COND FALSE !(a == 0) VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}] [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}, p={1:0}] [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}, p={1:0}] [L555] EXPR a->h VAL [a={1:0}, a->h=3, flag=1, malloc(sizeof(struct node))={1:0}, p={1:0}] [L555] COND TRUE a->h == 3 [L555] return 0; VAL [\result=0, a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}, p={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 110 locations, 30 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 368 SDslu, 90 SDs, 0 SdLazy, 214 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1332 SizeOfPredicates, 8 NumberOfNonLiveVariables, 128 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...