./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/cmp-freed-ptr.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_ee370ee9-9c27-45ce-9598-3706b348e410/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ee370ee9-9c27-45ce-9598-3706b348e410/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ee370ee9-9c27-45ce-9598-3706b348e410/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ee370ee9-9c27-45ce-9598-3706b348e410/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ee370ee9-9c27-45ce-9598-3706b348e410/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ee370ee9-9c27-45ce-9598-3706b348e410/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 3444bab46e3acd40907f623c997f9115bc97543a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:10:55,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:10:55,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:10:55,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:10:55,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:10:55,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:10:55,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:10:55,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:10:55,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:10:55,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:10:55,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:10:55,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:10:55,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:10:55,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:10:55,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:10:55,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:10:55,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:10:55,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:10:55,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:10:55,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:10:55,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:10:55,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:10:55,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:10:55,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:10:55,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:10:55,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:10:55,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:10:55,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:10:55,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:10:55,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:10:55,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:10:55,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:10:55,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:10:55,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:10:55,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:10:55,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:10:55,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:10:55,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:10:55,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:10:55,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:10:55,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:10:55,664 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ee370ee9-9c27-45ce-9598-3706b348e410/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:10:55,707 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:10:55,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:10:55,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:10:55,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:10:55,714 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:10:55,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:10:55,715 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:10:55,715 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:10:55,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:10:55,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:10:55,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:10:55,717 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:10:55,718 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:10:55,718 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:10:55,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:10:55,718 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:10:55,719 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:10:55,719 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:10:55,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:10:55,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:10:55,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:10:55,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:10:55,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:10:55,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:10:55,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:10:55,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:10:55,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:10:55,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:10:55,722 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_ee370ee9-9c27-45ce-9598-3706b348e410/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ee370ee9-9c27-45ce-9598-3706b348e410/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3444bab46e3acd40907f623c997f9115bc97543a [2020-11-28 03:10:56,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:10:56,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:10:56,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:10:56,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:10:56,101 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:10:56,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ee370ee9-9c27-45ce-9598-3706b348e410/bin/uautomizer/../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2020-11-28 03:10:56,216 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ee370ee9-9c27-45ce-9598-3706b348e410/bin/uautomizer/data/34e24dfbc/ae294eab71564b8883b005164275e5ce/FLAG8edad8296 [2020-11-28 03:10:57,020 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:10:57,021 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ee370ee9-9c27-45ce-9598-3706b348e410/sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2020-11-28 03:10:57,045 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ee370ee9-9c27-45ce-9598-3706b348e410/bin/uautomizer/data/34e24dfbc/ae294eab71564b8883b005164275e5ce/FLAG8edad8296 [2020-11-28 03:10:57,279 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ee370ee9-9c27-45ce-9598-3706b348e410/bin/uautomizer/data/34e24dfbc/ae294eab71564b8883b005164275e5ce [2020-11-28 03:10:57,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:10:57,287 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:10:57,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:10:57,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:10:57,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:10:57,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:10:57" (1/1) ... [2020-11-28 03:10:57,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1594919b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:57, skipping insertion in model container [2020-11-28 03:10:57,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:10:57" (1/1) ... [2020-11-28 03:10:57,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:10:57,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:10:57,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:10:57,921 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:10:57,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:10:58,072 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:10:58,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:58 WrapperNode [2020-11-28 03:10:58,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:10:58,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:10:58,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:10:58,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:10:58,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:58" (1/1) ... [2020-11-28 03:10:58,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:58" (1/1) ... [2020-11-28 03:10:58,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:58" (1/1) ... [2020-11-28 03:10:58,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:58" (1/1) ... [2020-11-28 03:10:58,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:58" (1/1) ... [2020-11-28 03:10:58,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:58" (1/1) ... [2020-11-28 03:10:58,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:58" (1/1) ... [2020-11-28 03:10:58,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:10:58,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:10:58,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:10:58,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:10:58,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee370ee9-9c27-45ce-9598-3706b348e410/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 03:10:58,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:10:58,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:10:58,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 03:10:58,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 03:10:58,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 03:10:58,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 03:10:58,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 03:10:58,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:10:58,297 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 03:10:58,297 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 03:10:58,299 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 03:10:58,299 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 03:10:58,299 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 03:10:58,299 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 03:10:58,300 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 03:10:58,300 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 03:10:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 03:10:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 03:10:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 03:10:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 03:10:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 03:10:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 03:10:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 03:10:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 03:10:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 03:10:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 03:10:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 03:10:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 03:10:58,304 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 03:10:58,304 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 03:10:58,304 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 03:10:58,304 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 03:10:58,304 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 03:10:58,305 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 03:10:58,305 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 03:10:58,305 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 03:10:58,305 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 03:10:58,305 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 03:10:58,306 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 03:10:58,306 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 03:10:58,306 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 03:10:58,306 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 03:10:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 03:10:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 03:10:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 03:10:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 03:10:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 03:10:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 03:10:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 03:10:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 03:10:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 03:10:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 03:10:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 03:10:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 03:10:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 03:10:58,311 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 03:10:58,311 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 03:10:58,312 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 03:10:58,312 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 03:10:58,312 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 03:10:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 03:10:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 03:10:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 03:10:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 03:10:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 03:10:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 03:10:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 03:10:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 03:10:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 03:10:58,315 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 03:10:58,315 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 03:10:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:10:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 03:10:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 03:10:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 03:10:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 03:10:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 03:10:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 03:10:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 03:10:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 03:10:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 03:10:58,320 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 03:10:58,321 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 03:10:58,321 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 03:10:58,321 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 03:10:58,321 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 03:10:58,322 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 03:10:58,322 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 03:10:58,322 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 03:10:58,322 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 03:10:58,322 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 03:10:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 03:10:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 03:10:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 03:10:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 03:10:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 03:10:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 03:10:58,324 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 03:10:58,324 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 03:10:58,324 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 03:10:58,324 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 03:10:58,324 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 03:10:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 03:10:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 03:10:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 03:10:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 03:10:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 03:10:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 03:10:58,326 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 03:10:58,326 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 03:10:58,326 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 03:10:58,326 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 03:10:58,326 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 03:10:58,326 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 03:10:58,327 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 03:10:58,327 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:10:58,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:10:58,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:10:58,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:10:58,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:10:59,127 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:10:59,127 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-28 03:10:59,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:59 BoogieIcfgContainer [2020-11-28 03:10:59,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:10:59,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:10:59,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:10:59,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:10:59,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:10:57" (1/3) ... [2020-11-28 03:10:59,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67820ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:10:59, skipping insertion in model container [2020-11-28 03:10:59,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:58" (2/3) ... [2020-11-28 03:10:59,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67820ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:10:59, skipping insertion in model container [2020-11-28 03:10:59,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:59" (3/3) ... [2020-11-28 03:10:59,142 INFO L111 eAbstractionObserver]: Analyzing ICFG cmp-freed-ptr.i [2020-11-28 03:10:59,155 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:10:59,161 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-11-28 03:10:59,175 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-11-28 03:10:59,200 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:10:59,201 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:10:59,201 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:10:59,201 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:10:59,201 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:10:59,201 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:10:59,201 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:10:59,202 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:10:59,219 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-28 03:10:59,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:10:59,229 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:59,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:59,230 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:10:59,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:59,237 INFO L82 PathProgramCache]: Analyzing trace with hash 542822380, now seen corresponding path program 1 times [2020-11-28 03:10:59,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:59,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477366840] [2020-11-28 03:10:59,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:59,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:59,506 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 03:10:59,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477366840] [2020-11-28 03:10:59,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:59,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:10:59,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923556060] [2020-11-28 03:10:59,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:59,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:59,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:59,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:59,546 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2020-11-28 03:10:59,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:59,695 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-28 03:10:59,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:10:59,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 03:10:59,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:59,705 INFO L225 Difference]: With dead ends: 29 [2020-11-28 03:10:59,705 INFO L226 Difference]: Without dead ends: 26 [2020-11-28 03:10:59,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 03:10:59,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-28 03:10:59,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-28 03:10:59,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-28 03:10:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-11-28 03:10:59,745 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 7 [2020-11-28 03:10:59,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:59,746 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-11-28 03:10:59,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:59,746 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-11-28 03:10:59,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:10:59,747 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:59,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:59,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:10:59,748 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:10:59,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:59,749 INFO L82 PathProgramCache]: Analyzing trace with hash -352375362, now seen corresponding path program 1 times [2020-11-28 03:10:59,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:59,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372263192] [2020-11-28 03:10:59,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:59,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:59,868 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 03:10:59,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372263192] [2020-11-28 03:10:59,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:59,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:10:59,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71485923] [2020-11-28 03:10:59,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:59,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:59,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:59,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:59,873 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 4 states. [2020-11-28 03:11:00,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:00,040 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-11-28 03:11:00,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:11:00,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 03:11:00,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:00,044 INFO L225 Difference]: With dead ends: 25 [2020-11-28 03:11:00,044 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 03:11:00,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:11:00,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 03:11:00,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-28 03:11:00,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 03:11:00,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-11-28 03:11:00,054 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 8 [2020-11-28 03:11:00,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:00,055 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-11-28 03:11:00,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:11:00,055 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-11-28 03:11:00,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:11:00,056 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:00,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:00,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:11:00,057 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:11:00,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:00,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1961265710, now seen corresponding path program 1 times [2020-11-28 03:11:00,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:00,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268557707] [2020-11-28 03:11:00,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:00,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:11:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:00,134 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 03:11:00,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268557707] [2020-11-28 03:11:00,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:00,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:11:00,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407926479] [2020-11-28 03:11:00,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:11:00,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:00,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:11:00,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:11:00,137 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 4 states. [2020-11-28 03:11:00,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:00,221 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-28 03:11:00,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:11:00,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 03:11:00,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:00,223 INFO L225 Difference]: With dead ends: 24 [2020-11-28 03:11:00,223 INFO L226 Difference]: Without dead ends: 24 [2020-11-28 03:11:00,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:11:00,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-28 03:11:00,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-28 03:11:00,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 03:11:00,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-28 03:11:00,228 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 9 [2020-11-28 03:11:00,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:00,229 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-28 03:11:00,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:11:00,229 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-28 03:11:00,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:11:00,230 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:00,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:00,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:11:00,231 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:11:00,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:00,232 INFO L82 PathProgramCache]: Analyzing trace with hash -714294128, now seen corresponding path program 1 times [2020-11-28 03:11:00,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:00,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62470] [2020-11-28 03:11:00,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:00,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:11:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:00,316 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 03:11:00,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62470] [2020-11-28 03:11:00,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:00,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:11:00,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448973576] [2020-11-28 03:11:00,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:11:00,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:00,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:11:00,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:11:00,318 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 4 states. [2020-11-28 03:11:00,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:00,380 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-11-28 03:11:00,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:11:00,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 03:11:00,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:00,381 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:11:00,382 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 03:11:00,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:11:00,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 03:11:00,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-28 03:11:00,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 03:11:00,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-11-28 03:11:00,386 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 11 [2020-11-28 03:11:00,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:00,386 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-11-28 03:11:00,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:11:00,386 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-11-28 03:11:00,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:11:00,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:00,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:00,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:11:00,387 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:11:00,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:00,388 INFO L82 PathProgramCache]: Analyzing trace with hash -668281437, now seen corresponding path program 1 times [2020-11-28 03:11:00,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:00,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812289725] [2020-11-28 03:11:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:00,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:11:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:00,501 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 03:11:00,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812289725] [2020-11-28 03:11:00,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:00,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:11:00,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569954223] [2020-11-28 03:11:00,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:11:00,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:00,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:11:00,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:11:00,503 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2020-11-28 03:11:00,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:00,627 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-11-28 03:11:00,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:11:00,628 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-28 03:11:00,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:00,629 INFO L225 Difference]: With dead ends: 20 [2020-11-28 03:11:00,629 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 03:11:00,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:11:00,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 03:11:00,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-28 03:11:00,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:11:00,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-28 03:11:00,633 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2020-11-28 03:11:00,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:00,633 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-28 03:11:00,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:11:00,634 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-28 03:11:00,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:11:00,634 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:00,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:00,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:11:00,635 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:11:00,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:00,635 INFO L82 PathProgramCache]: Analyzing trace with hash 758111986, now seen corresponding path program 1 times [2020-11-28 03:11:00,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:00,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385992250] [2020-11-28 03:11:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:00,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:11:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:00,740 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 03:11:00,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385992250] [2020-11-28 03:11:00,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:00,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:11:00,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614081770] [2020-11-28 03:11:00,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:11:00,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:00,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:11:00,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:11:00,742 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 4 states. [2020-11-28 03:11:00,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:00,804 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-11-28 03:11:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:11:00,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 03:11:00,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:00,806 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:11:00,806 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 03:11:00,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:11:00,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 03:11:00,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-28 03:11:00,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 03:11:00,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-11-28 03:11:00,811 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2020-11-28 03:11:00,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:00,812 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-11-28 03:11:00,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:11:00,812 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-11-28 03:11:00,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:11:00,813 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:00,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:00,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:11:00,814 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:11:00,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:00,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2034300366, now seen corresponding path program 1 times [2020-11-28 03:11:00,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:00,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170635082] [2020-11-28 03:11:00,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:00,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:11:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:00,947 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 03:11:00,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170635082] [2020-11-28 03:11:00,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:00,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:11:00,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813134353] [2020-11-28 03:11:00,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:11:00,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:00,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:11:00,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:11:00,950 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2020-11-28 03:11:01,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:01,167 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-11-28 03:11:01,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:11:01,167 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 03:11:01,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:01,168 INFO L225 Difference]: With dead ends: 21 [2020-11-28 03:11:01,168 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 03:11:01,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:11:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 03:11:01,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 03:11:01,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 03:11:01,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2020-11-28 03:11:01,171 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 14 [2020-11-28 03:11:01,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:01,172 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2020-11-28 03:11:01,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:11:01,172 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2020-11-28 03:11:01,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:11:01,172 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:01,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:01,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:11:01,173 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:11:01,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:01,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1976190218, now seen corresponding path program 1 times [2020-11-28 03:11:01,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:01,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061247097] [2020-11-28 03:11:01,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:01,206 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:01,231 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:01,263 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:01,263 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:11:01,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:11:01,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:11:01 BoogieIcfgContainer [2020-11-28 03:11:01,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:11:01,291 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:11:01,292 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:11:01,292 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:11:01,292 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:59" (3/4) ... [2020-11-28 03:11:01,294 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:11:01,338 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ee370ee9-9c27-45ce-9598-3706b348e410/bin/uautomizer/witness.graphml [2020-11-28 03:11:01,338 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:11:01,340 INFO L168 Benchmark]: Toolchain (without parser) took 4052.23 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 73.8 MB in the beginning and 68.5 MB in the end (delta: 5.3 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:01,341 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 81.8 MB. Free memory was 38.7 MB in the beginning and 38.6 MB in the end (delta: 65.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:01,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 785.23 ms. Allocated memory is still 102.8 MB. Free memory was 73.3 MB in the beginning and 69.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:01,342 INFO L168 Benchmark]: Boogie Preprocessor took 117.59 ms. Allocated memory is still 102.8 MB. Free memory was 69.8 MB in the beginning and 67.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:01,343 INFO L168 Benchmark]: RCFGBuilder took 934.77 ms. Allocated memory is still 102.8 MB. Free memory was 67.7 MB in the beginning and 74.4 MB in the end (delta: -6.6 MB). Peak memory consumption was 33.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:01,344 INFO L168 Benchmark]: TraceAbstraction took 2157.53 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 73.6 MB in the beginning and 70.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:01,344 INFO L168 Benchmark]: Witness Printer took 47.00 ms. Allocated memory is still 125.8 MB. Free memory was 70.6 MB in the beginning and 68.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:01,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 81.8 MB. Free memory was 38.7 MB in the beginning and 38.6 MB in the end (delta: 65.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 785.23 ms. Allocated memory is still 102.8 MB. Free memory was 73.3 MB in the beginning and 69.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 117.59 ms. Allocated memory is still 102.8 MB. Free memory was 69.8 MB in the beginning and 67.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 934.77 ms. Allocated memory is still 102.8 MB. Free memory was 67.7 MB in the beginning and 74.4 MB in the end (delta: -6.6 MB). Peak memory consumption was 33.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2157.53 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 73.6 MB in the beginning and 70.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. * Witness Printer took 47.00 ms. Allocated memory is still 125.8 MB. Free memory was 70.6 MB in the beginning and 68.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L543] struct T* x = ((void *)0); [L544] struct T* y = ((void *)0); [L545] y = malloc(sizeof(*y)) [L546] intptr_t adressY = (intptr_t) y; VAL [adressY=-1, malloc(sizeof(*y))={-1:0}, x={0:0}, y={-1:0}] [L547] free(y) VAL [adressY=-1, malloc(sizeof(*y))={-1:0}, x={0:0}, y={-1:0}] [L547] free(y) VAL [adressY=-1, malloc(sizeof(*y))={-1:0}, x={0:0}, y={-1:0}] [L547] free(y) [L548] x = malloc(sizeof(*x)) [L549] intptr_t adressX = (intptr_t) x; VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L550] COND TRUE adressX == adressY VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L552] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L552] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L552] free(x) [L554] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L554] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L554] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 45 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 112 SDslu, 82 SDs, 0 SdLazy, 210 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 2442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...