./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0019-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0019-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 c2707018625c82fb11b0c17a966b82b37a0c8e83 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 05:22:33,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:22:33,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:22:33,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:22:33,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:22:33,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:22:33,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:22:33,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:22:33,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:22:33,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:22:33,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:22:33,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:22:33,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:22:33,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:22:33,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:22:33,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:22:33,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:22:33,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:22:33,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:22:33,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:22:33,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:22:33,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:22:33,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:22:33,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:22:33,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:22:33,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:22:33,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:22:33,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:22:33,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:22:33,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:22:33,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:22:33,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:22:33,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:22:33,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:22:33,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:22:33,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:22:33,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:22:33,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:22:33,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:22:33,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:22:33,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:22:33,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 05:22:33,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:22:33,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:22:33,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:22:33,622 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:22:33,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:22:33,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:22:33,624 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:22:33,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:22:33,625 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:22:33,625 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:22:33,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:22:33,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:22:33,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:22:33,626 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:22:33,627 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:22:33,627 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:22:33,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:22:33,627 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:22:33,627 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:22:33,628 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:22:33,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:22:33,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:22:33,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:22:33,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:22:33,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:22:33,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:22:33,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 05:22:33,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 05:22:33,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:22:33,630 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2707018625c82fb11b0c17a966b82b37a0c8e83 [2021-08-27 05:22:33,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:22:33,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:22:33,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:22:33,946 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:22:33,946 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:22:33,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0019-1.i [2021-08-27 05:22:34,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68e1ff218/1e5287f1a0664992831abcca35b13dfa/FLAG73c80aeea [2021-08-27 05:22:34,494 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:22:34,495 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0019-1.i [2021-08-27 05:22:34,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68e1ff218/1e5287f1a0664992831abcca35b13dfa/FLAG73c80aeea [2021-08-27 05:22:34,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68e1ff218/1e5287f1a0664992831abcca35b13dfa [2021-08-27 05:22:34,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:22:34,863 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:22:34,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:22:34,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:22:34,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:22:34,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:22:34" (1/1) ... [2021-08-27 05:22:34,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3547d564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:34, skipping insertion in model container [2021-08-27 05:22:34,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:22:34" (1/1) ... [2021-08-27 05:22:34,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:22:34,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:22:35,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:22:35,185 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:22:35,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:22:35,264 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:22:35,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:35 WrapperNode [2021-08-27 05:22:35,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:22:35,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:22:35,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:22:35,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:22:35,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:35" (1/1) ... [2021-08-27 05:22:35,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:35" (1/1) ... [2021-08-27 05:22:35,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:35" (1/1) ... [2021-08-27 05:22:35,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:35" (1/1) ... [2021-08-27 05:22:35,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:35" (1/1) ... [2021-08-27 05:22:35,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:35" (1/1) ... [2021-08-27 05:22:35,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:35" (1/1) ... [2021-08-27 05:22:35,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:22:35,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:22:35,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:22:35,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:22:35,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:35" (1/1) ... [2021-08-27 05:22:35,373 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:22:35,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:22:35,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 05:22:35,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 05:22:35,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:22:35,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:22:35,443 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:22:35,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:22:35,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:22:35,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:22:35,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:22:35,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:22:35,445 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2021-08-27 05:22:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2021-08-27 05:22:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:22:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:22:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:22:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:22:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:22:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:22:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:22:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:22:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:22:35,448 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:22:35,448 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:22:35,448 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:22:35,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:22:35,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:22:35,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:22:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:22:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:22:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:22:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:22:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:22:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:22:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:22:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:22:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:22:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:22:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:22:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:22:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:22:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:22:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:22:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:22:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:22:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:22:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:22:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:22:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:22:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:22:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:22:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:22:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:22:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:22:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:22:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:22:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:22:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:22:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:22:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:22:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:22:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:22:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:22:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:22:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:22:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:22:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:22:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:22:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:22:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:22:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:22:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:22:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:22:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:22:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:22:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:22:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:22:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:22:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:22:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:22:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:22:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:22:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:22:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:22:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:22:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:22:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:22:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:22:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:22:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:22:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:22:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:22:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:22:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:22:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:22:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:22:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:22:35,463 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:22:35,463 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:22:35,463 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:22:35,463 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:22:35,463 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:22:35,463 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:22:35,463 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:22:35,463 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:22:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:22:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:22:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:22:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:22:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:22:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:22:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:22:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:22:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:22:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:22:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:22:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:22:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:22:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:22:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:22:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:22:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:22:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:22:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:22:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:22:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:22:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2021-08-27 05:22:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:22:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:22:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2021-08-27 05:22:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:22:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:22:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:22:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:22:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 05:22:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:22:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 05:22:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 05:22:36,014 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:22:36,014 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-27 05:22:36,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:22:36 BoogieIcfgContainer [2021-08-27 05:22:36,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:22:36,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:22:36,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:22:36,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:22:36,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:22:34" (1/3) ... [2021-08-27 05:22:36,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1215d306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:22:36, skipping insertion in model container [2021-08-27 05:22:36,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:35" (2/3) ... [2021-08-27 05:22:36,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1215d306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:22:36, skipping insertion in model container [2021-08-27 05:22:36,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:22:36" (3/3) ... [2021-08-27 05:22:36,026 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-1.i [2021-08-27 05:22:36,039 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:22:36,039 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-08-27 05:22:36,078 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:22:36,084 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 05:22:36,084 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-08-27 05:22:36,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 52 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-27 05:22:36,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 05:22:36,101 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:36,102 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:36,102 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_dataErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-08-27 05:22:36,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:36,107 INFO L82 PathProgramCache]: Analyzing trace with hash 58108464, now seen corresponding path program 1 times [2021-08-27 05:22:36,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:36,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744863117] [2021-08-27 05:22:36,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:36,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:36,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:36,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:36,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744863117] [2021-08-27 05:22:36,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744863117] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:36,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:36,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 05:22:36,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993138962] [2021-08-27 05:22:36,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:22:36,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:36,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:22:36,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:22:36,468 INFO L87 Difference]: Start difference. First operand has 61 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 52 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:36,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:36,702 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-08-27 05:22:36,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 05:22:36,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-08-27 05:22:36,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:36,710 INFO L225 Difference]: With dead ends: 57 [2021-08-27 05:22:36,710 INFO L226 Difference]: Without dead ends: 54 [2021-08-27 05:22:36,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 82.3ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:22:36,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-08-27 05:22:36,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-08-27 05:22:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:36,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-08-27 05:22:36,747 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 9 [2021-08-27 05:22:36,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:36,747 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-08-27 05:22:36,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:36,748 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-08-27 05:22:36,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 05:22:36,748 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:36,748 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:36,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 05:22:36,749 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_dataErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-08-27 05:22:36,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:36,750 INFO L82 PathProgramCache]: Analyzing trace with hash 58108465, now seen corresponding path program 1 times [2021-08-27 05:22:36,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:36,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080259890] [2021-08-27 05:22:36,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:36,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:36,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:36,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:36,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080259890] [2021-08-27 05:22:36,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080259890] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:36,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:36,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 05:22:36,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26340095] [2021-08-27 05:22:36,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:22:36,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:36,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:22:36,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:22:36,924 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:37,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:37,096 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-08-27 05:22:37,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:22:37,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-08-27 05:22:37,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:37,098 INFO L225 Difference]: With dead ends: 51 [2021-08-27 05:22:37,098 INFO L226 Difference]: Without dead ends: 51 [2021-08-27 05:22:37,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 79.8ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:22:37,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-08-27 05:22:37,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-08-27 05:22:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 43 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:37,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-08-27 05:22:37,106 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 9 [2021-08-27 05:22:37,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:37,106 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-08-27 05:22:37,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:37,106 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-08-27 05:22:37,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 05:22:37,107 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:37,107 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:37,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 05:22:37,107 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_dataErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-08-27 05:22:37,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:37,108 INFO L82 PathProgramCache]: Analyzing trace with hash 7659090, now seen corresponding path program 1 times [2021-08-27 05:22:37,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:37,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056804856] [2021-08-27 05:22:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:37,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:37,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:37,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:37,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:37,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056804856] [2021-08-27 05:22:37,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056804856] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:37,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:37,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 05:22:37,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103956846] [2021-08-27 05:22:37,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 05:22:37,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:37,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 05:22:37,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:22:37,326 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:37,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:37,478 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-08-27 05:22:37,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 05:22:37,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-27 05:22:37,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:37,480 INFO L225 Difference]: With dead ends: 50 [2021-08-27 05:22:37,480 INFO L226 Difference]: Without dead ends: 50 [2021-08-27 05:22:37,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 90.9ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-27 05:22:37,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-27 05:22:37,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-08-27 05:22:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 42 states have internal predecessors, (43), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-08-27 05:22:37,485 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 11 [2021-08-27 05:22:37,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:37,486 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-08-27 05:22:37,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:37,486 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-08-27 05:22:37,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 05:22:37,487 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:37,487 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:37,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 05:22:37,487 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting free_dataErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-08-27 05:22:37,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:37,488 INFO L82 PathProgramCache]: Analyzing trace with hash 581041713, now seen corresponding path program 1 times [2021-08-27 05:22:37,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:37,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011274394] [2021-08-27 05:22:37,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:37,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:37,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:37,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 05:22:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:37,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:37,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:37,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011274394] [2021-08-27 05:22:37,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011274394] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:37,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:37,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 05:22:37,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839036720] [2021-08-27 05:22:37,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 05:22:37,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:37,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 05:22:37,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:22:37,587 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:37,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:37,705 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2021-08-27 05:22:37,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:22:37,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-08-27 05:22:37,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:37,709 INFO L225 Difference]: With dead ends: 46 [2021-08-27 05:22:37,709 INFO L226 Difference]: Without dead ends: 46 [2021-08-27 05:22:37,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:22:37,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-08-27 05:22:37,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-08-27 05:22:37,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 38 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-08-27 05:22:37,721 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 19 [2021-08-27 05:22:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:37,722 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-08-27 05:22:37,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-08-27 05:22:37,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 05:22:37,723 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:37,723 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:37,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 05:22:37,724 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting free_dataErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-08-27 05:22:37,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:37,724 INFO L82 PathProgramCache]: Analyzing trace with hash 581041714, now seen corresponding path program 1 times [2021-08-27 05:22:37,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:37,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386527116] [2021-08-27 05:22:37,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:37,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:37,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:37,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 05:22:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:37,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:37,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:37,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386527116] [2021-08-27 05:22:37,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386527116] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:37,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:37,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 05:22:37,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023550562] [2021-08-27 05:22:37,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 05:22:37,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:37,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 05:22:37,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:22:37,830 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:37,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:37,940 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-08-27 05:22:37,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:22:37,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-08-27 05:22:37,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:37,946 INFO L225 Difference]: With dead ends: 42 [2021-08-27 05:22:37,947 INFO L226 Difference]: Without dead ends: 42 [2021-08-27 05:22:37,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:22:37,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-27 05:22:37,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-08-27 05:22:37,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.25) internal successors, (35), 34 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:37,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-08-27 05:22:37,960 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 19 [2021-08-27 05:22:37,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:37,961 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-08-27 05:22:37,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:37,962 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-08-27 05:22:37,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 05:22:37,963 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:37,963 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:37,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 05:22:37,964 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting free_dataErr8ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-08-27 05:22:37,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:37,964 INFO L82 PathProgramCache]: Analyzing trace with hash -2120331936, now seen corresponding path program 1 times [2021-08-27 05:22:37,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:37,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365498247] [2021-08-27 05:22:37,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:37,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:38,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:38,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 05:22:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:38,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:38,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365498247] [2021-08-27 05:22:38,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365498247] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:38,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:38,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-27 05:22:38,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169298933] [2021-08-27 05:22:38,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 05:22:38,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:38,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 05:22:38,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-08-27 05:22:38,244 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:38,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:38,590 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-08-27 05:22:38,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 05:22:38,591 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-08-27 05:22:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:38,592 INFO L225 Difference]: With dead ends: 41 [2021-08-27 05:22:38,592 INFO L226 Difference]: Without dead ends: 41 [2021-08-27 05:22:38,592 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 274.8ms TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-08-27 05:22:38,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-27 05:22:38,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-08-27 05:22:38,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 33 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-08-27 05:22:38,595 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 26 [2021-08-27 05:22:38,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:38,595 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-08-27 05:22:38,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:38,596 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-08-27 05:22:38,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-27 05:22:38,596 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:38,596 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:38,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 05:22:38,597 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_dataErr9ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-08-27 05:22:38,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:38,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1305780487, now seen corresponding path program 1 times [2021-08-27 05:22:38,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:38,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764387926] [2021-08-27 05:22:38,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:38,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:38,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:38,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 05:22:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:38,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:38,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:38,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764387926] [2021-08-27 05:22:38,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764387926] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:38,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:38,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-27 05:22:38,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112980719] [2021-08-27 05:22:38,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 05:22:38,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:38,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 05:22:38,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-08-27 05:22:38,845 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 13 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:39,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:39,177 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-08-27 05:22:39,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 05:22:39,177 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-08-27 05:22:39,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:39,178 INFO L225 Difference]: With dead ends: 40 [2021-08-27 05:22:39,178 INFO L226 Difference]: Without dead ends: 40 [2021-08-27 05:22:39,179 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 250.0ms TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-08-27 05:22:39,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-27 05:22:39,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-08-27 05:22:39,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 32 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:39,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-08-27 05:22:39,181 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 27 [2021-08-27 05:22:39,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:39,182 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-08-27 05:22:39,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:39,182 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-08-27 05:22:39,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-27 05:22:39,183 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:39,183 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:39,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-27 05:22:39,184 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting free_dataErr10ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-08-27 05:22:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:39,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1824489342, now seen corresponding path program 1 times [2021-08-27 05:22:39,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:39,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032140877] [2021-08-27 05:22:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:39,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:39,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:39,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 05:22:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:39,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:39,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:39,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032140877] [2021-08-27 05:22:39,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032140877] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:39,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:39,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-08-27 05:22:39,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58783773] [2021-08-27 05:22:39,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 05:22:39,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:39,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 05:22:39,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-08-27 05:22:39,476 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:39,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:39,764 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-08-27 05:22:39,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 05:22:39,765 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2021-08-27 05:22:39,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:39,765 INFO L225 Difference]: With dead ends: 39 [2021-08-27 05:22:39,765 INFO L226 Difference]: Without dead ends: 39 [2021-08-27 05:22:39,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 251.5ms TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-08-27 05:22:39,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-08-27 05:22:39,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-08-27 05:22:39,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:39,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-08-27 05:22:39,769 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 28 [2021-08-27 05:22:39,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:39,769 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-08-27 05:22:39,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:39,769 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-08-27 05:22:39,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-27 05:22:39,770 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:39,770 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:39,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-27 05:22:39,770 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-08-27 05:22:39,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:39,771 INFO L82 PathProgramCache]: Analyzing trace with hash -725172444, now seen corresponding path program 1 times [2021-08-27 05:22:39,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:39,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383056057] [2021-08-27 05:22:39,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:39,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:39,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:39,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 05:22:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:39,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-08-27 05:22:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:40,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:40,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:40,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383056057] [2021-08-27 05:22:40,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383056057] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:40,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:40,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-27 05:22:40,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750243394] [2021-08-27 05:22:40,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-27 05:22:40,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:40,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-27 05:22:40,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-27 05:22:40,114 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:40,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:40,637 INFO L93 Difference]: Finished difference Result 41 states and 40 transitions. [2021-08-27 05:22:40,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-27 05:22:40,638 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2021-08-27 05:22:40,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:40,638 INFO L225 Difference]: With dead ends: 41 [2021-08-27 05:22:40,638 INFO L226 Difference]: Without dead ends: 39 [2021-08-27 05:22:40,639 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 486.3ms TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2021-08-27 05:22:40,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-08-27 05:22:40,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-08-27 05:22:40,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 31 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:40,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 38 transitions. [2021-08-27 05:22:40,641 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 38 transitions. Word has length 29 [2021-08-27 05:22:40,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:40,641 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 38 transitions. [2021-08-27 05:22:40,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:40,642 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 38 transitions. [2021-08-27 05:22:40,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-27 05:22:40,642 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:40,642 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:40,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-27 05:22:40,643 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting free_dataErr11ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-08-27 05:22:40,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:40,643 INFO L82 PathProgramCache]: Analyzing trace with hash -724594661, now seen corresponding path program 1 times [2021-08-27 05:22:40,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:40,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292908705] [2021-08-27 05:22:40,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:40,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:40,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:40,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 05:22:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:40,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:40,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292908705] [2021-08-27 05:22:40,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292908705] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:40,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:40,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-08-27 05:22:40,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061090490] [2021-08-27 05:22:40,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 05:22:40,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:40,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 05:22:40,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-08-27 05:22:40,855 INFO L87 Difference]: Start difference. First operand 39 states and 38 transitions. Second operand has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:22:41,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:41,141 INFO L93 Difference]: Finished difference Result 38 states and 37 transitions. [2021-08-27 05:22:41,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-27 05:22:41,142 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2021-08-27 05:22:41,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:41,142 INFO L225 Difference]: With dead ends: 38 [2021-08-27 05:22:41,142 INFO L226 Difference]: Without dead ends: 38 [2021-08-27 05:22:41,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 256.4ms TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-08-27 05:22:41,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-08-27 05:22:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-08-27 05:22:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 30 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 37 transitions. [2021-08-27 05:22:41,145 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 37 transitions. Word has length 29 [2021-08-27 05:22:41,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:41,145 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 37 transitions. [2021-08-27 05:22:41,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:22:41,146 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 37 transitions. [2021-08-27 05:22:41,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-27 05:22:41,146 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:41,146 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:41,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-27 05:22:41,147 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting free_dataErr12ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-08-27 05:22:41,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:41,147 INFO L82 PathProgramCache]: Analyzing trace with hash -987597916, now seen corresponding path program 1 times [2021-08-27 05:22:41,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:41,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630843488] [2021-08-27 05:22:41,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:41,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:41,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:41,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 05:22:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:41,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:41,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630843488] [2021-08-27 05:22:41,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630843488] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:41,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:41,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-08-27 05:22:41,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593761966] [2021-08-27 05:22:41,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 05:22:41,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:41,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 05:22:41,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-08-27 05:22:41,342 INFO L87 Difference]: Start difference. First operand 38 states and 37 transitions. Second operand has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:22:41,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:41,663 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2021-08-27 05:22:41,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-27 05:22:41,664 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2021-08-27 05:22:41,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:41,665 INFO L225 Difference]: With dead ends: 37 [2021-08-27 05:22:41,665 INFO L226 Difference]: Without dead ends: 37 [2021-08-27 05:22:41,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 252.5ms TimeCoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2021-08-27 05:22:41,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-27 05:22:41,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-27 05:22:41,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:41,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 36 transitions. [2021-08-27 05:22:41,668 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 36 transitions. Word has length 30 [2021-08-27 05:22:41,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:41,668 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 36 transitions. [2021-08-27 05:22:41,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:22:41,669 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2021-08-27 05:22:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-27 05:22:41,669 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:41,669 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:41,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-27 05:22:41,670 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting free_dataErr13ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-08-27 05:22:41,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:41,671 INFO L82 PathProgramCache]: Analyzing trace with hash -550764227, now seen corresponding path program 1 times [2021-08-27 05:22:41,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:41,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286761935] [2021-08-27 05:22:41,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:41,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:41,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:42,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 05:22:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:42,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:42,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:42,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286761935] [2021-08-27 05:22:42,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286761935] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:42,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:42,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-08-27 05:22:42,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117022887] [2021-08-27 05:22:42,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 05:22:42,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:42,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 05:22:42,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2021-08-27 05:22:42,175 INFO L87 Difference]: Start difference. First operand 37 states and 36 transitions. Second operand has 22 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:22:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:42,946 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2021-08-27 05:22:42,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-27 05:22:42,946 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2021-08-27 05:22:42,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:42,947 INFO L225 Difference]: With dead ends: 36 [2021-08-27 05:22:42,947 INFO L226 Difference]: Without dead ends: 36 [2021-08-27 05:22:42,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 797.9ms TimeCoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2021-08-27 05:22:42,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-27 05:22:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-08-27 05:22:42,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.0) internal successors, (28), 28 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 35 transitions. [2021-08-27 05:22:42,950 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 35 transitions. Word has length 31 [2021-08-27 05:22:42,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:42,951 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 35 transitions. [2021-08-27 05:22:42,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:22:42,951 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 35 transitions. [2021-08-27 05:22:42,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-27 05:22:42,952 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:42,952 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:42,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-27 05:22:42,952 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr4ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 18 more)] === [2021-08-27 05:22:42,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:42,953 INFO L82 PathProgramCache]: Analyzing trace with hash 2060273419, now seen corresponding path program 1 times [2021-08-27 05:22:42,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:42,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318284133] [2021-08-27 05:22:42,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:42,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:43,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 05:22:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:43,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-08-27 05:22:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:44,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:44,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318284133] [2021-08-27 05:22:44,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318284133] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:44,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:44,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-08-27 05:22:44,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6370501] [2021-08-27 05:22:44,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-27 05:22:44,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:44,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-27 05:22:44,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2021-08-27 05:22:44,603 INFO L87 Difference]: Start difference. First operand 36 states and 35 transitions. Second operand has 27 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:46,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:46,073 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2021-08-27 05:22:46,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-27 05:22:46,073 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2021-08-27 05:22:46,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:46,074 INFO L225 Difference]: With dead ends: 35 [2021-08-27 05:22:46,074 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 05:22:46,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1806.0ms TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2021-08-27 05:22:46,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 05:22:46,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 05:22:46,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 05:22:46,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 05:22:46,075 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-08-27 05:22:46,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:46,076 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 05:22:46,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:46,076 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 05:22:46,076 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 05:22:46,078 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-08-27 05:22:46,079 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-08-27 05:22:46,080 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2REQUIRES_VIOLATION [2021-08-27 05:22:46,080 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3REQUIRES_VIOLATION [2021-08-27 05:22:46,080 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:22:46,080 INFO L764 garLoopResultBuilder]: Registering result SAFE for location alloc_dataErr0REQUIRES_VIOLATION [2021-08-27 05:22:46,081 INFO L764 garLoopResultBuilder]: Registering result SAFE for location alloc_dataErr1REQUIRES_VIOLATION [2021-08-27 05:22:46,081 INFO L764 garLoopResultBuilder]: Registering result SAFE for location alloc_dataErr2REQUIRES_VIOLATION [2021-08-27 05:22:46,081 INFO L764 garLoopResultBuilder]: Registering result SAFE for location alloc_dataErr3REQUIRES_VIOLATION [2021-08-27 05:22:46,081 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr0REQUIRES_VIOLATION [2021-08-27 05:22:46,082 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr1REQUIRES_VIOLATION [2021-08-27 05:22:46,082 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr2REQUIRES_VIOLATION [2021-08-27 05:22:46,082 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr3REQUIRES_VIOLATION [2021-08-27 05:22:46,082 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr4REQUIRES_VIOLATION [2021-08-27 05:22:46,082 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr5REQUIRES_VIOLATION [2021-08-27 05:22:46,083 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr6REQUIRES_VIOLATION [2021-08-27 05:22:46,083 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr7REQUIRES_VIOLATION [2021-08-27 05:22:46,083 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr8ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:22:46,083 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr9ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:22:46,084 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr10ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:22:46,084 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr11ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:22:46,084 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr12ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:22:46,084 INFO L764 garLoopResultBuilder]: Registering result SAFE for location free_dataErr13ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:22:46,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-27 05:22:46,089 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:22:46,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:22:46 BoogieIcfgContainer [2021-08-27 05:22:46,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:22:46,092 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:22:46,092 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:22:46,092 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:22:46,092 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:22:36" (3/4) ... [2021-08-27 05:22:46,095 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 05:22:46,100 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-08-27 05:22:46,100 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-27 05:22:46,101 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-08-27 05:22:46,101 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-08-27 05:22:46,101 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-08-27 05:22:46,101 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-08-27 05:22:46,101 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure alloc_data [2021-08-27 05:22:46,101 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-27 05:22:46,101 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-08-27 05:22:46,102 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure free_data [2021-08-27 05:22:46,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-08-27 05:22:46,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-08-27 05:22:46,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-27 05:22:46,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 05:22:46,147 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 05:22:46,147 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:22:46,148 INFO L168 Benchmark]: Toolchain (without parser) took 11285.33 ms. Allocated memory was 56.6 MB in the beginning and 165.7 MB in the end (delta: 109.1 MB). Free memory was 38.5 MB in the beginning and 143.5 MB in the end (delta: -105.0 MB). Peak memory consumption was 100.8 MB. Max. memory is 16.1 GB. [2021-08-27 05:22:46,149 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 56.6 MB. Free memory is still 38.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:22:46,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.76 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 35.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 05:22:46,149 INFO L168 Benchmark]: Boogie Preprocessor took 97.65 ms. Allocated memory is still 56.6 MB. Free memory was 35.3 MB in the beginning and 32.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:22:46,150 INFO L168 Benchmark]: RCFGBuilder took 650.56 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 32.7 MB in the beginning and 49.9 MB in the end (delta: -17.2 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. [2021-08-27 05:22:46,150 INFO L168 Benchmark]: TraceAbstraction took 10073.76 ms. Allocated memory was 75.5 MB in the beginning and 165.7 MB in the end (delta: 90.2 MB). Free memory was 49.4 MB in the beginning and 49.5 MB in the end (delta: -105.4 kB). Peak memory consumption was 90.3 MB. Max. memory is 16.1 GB. [2021-08-27 05:22:46,150 INFO L168 Benchmark]: Witness Printer took 55.56 ms. Allocated memory is still 165.7 MB. Free memory was 49.5 MB in the beginning and 143.5 MB in the end (delta: -94.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:22:46,152 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 56.6 MB. Free memory is still 38.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 400.76 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 35.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 97.65 ms. Allocated memory is still 56.6 MB. Free memory was 35.3 MB in the beginning and 32.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 650.56 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 32.7 MB in the beginning and 49.9 MB in the end (delta: -17.2 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10073.76 ms. Allocated memory was 75.5 MB in the beginning and 165.7 MB in the end (delta: 90.2 MB). Free memory was 49.4 MB in the beginning and 49.5 MB in the end (delta: -105.4 kB). Peak memory consumption was 90.3 MB. Max. memory is 16.1 GB. * Witness Printer took 55.56 ms. Allocated memory is still 165.7 MB. Free memory was 49.5 MB in the beginning and 143.5 MB in the end (delta: -94.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 538]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 538]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 539]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 539]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 539]: free always succeeds For all program executions holds that free always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 79 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 10011.4ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 17.3ms, AutomataDifference: 5188.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 318 SDtfs, 355 SDslu, 1376 SDs, 0 SdLazy, 3103 SolverSat, 170 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1908.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 286 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 4740.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=0, InterpolantAutomatonStates: 174, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 74.6ms AutomataMinimizationTime, 13 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 39.4ms SsaConstructionTime, 220.1ms SatisfiabilityAnalysisTime, 4201.5ms InterpolantComputationTime, 302 NumberOfCodeBlocks, 302 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 289 ConstructedInterpolants, 0 QuantifiedInterpolants, 3526 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 - AllSpecificationsHoldResult: All specifications hold 23 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-27 05:22:46,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...