./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-properties/list_flag-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/list-properties/list_flag-2.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 afc88cbf4886a453fed887733400308a528b9724 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/list-properties/list_flag-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 afc88cbf4886a453fed887733400308a528b9724 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:42:22,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:42:22,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:42:22,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:42:22,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:42:22,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:42:22,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:42:22,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:42:22,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:42:22,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:42:22,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:42:22,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:42:22,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:42:22,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:42:22,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:42:22,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:42:22,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:42:22,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:42:22,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:42:22,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:42:22,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:42:22,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:42:22,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:42:22,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:42:22,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:42:22,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:42:22,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:42:22,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:42:22,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:42:22,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:42:22,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:42:22,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:42:22,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:42:22,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:42:22,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:42:22,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:42:22,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:42:22,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:42:22,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:42:22,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:42:22,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:42:22,546 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 02:42:22,561 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:42:22,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:42:22,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:42:22,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:42:22,563 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:42:22,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:42:22,564 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:42:22,564 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:42:22,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:42:22,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:42:22,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:42:22,565 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:42:22,566 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:42:22,566 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:42:22,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:42:22,566 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:42:22,567 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:42:22,567 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:42:22,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:42:22,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:42:22,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:42:22,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:42:22,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:42:22,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:42:22,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:42:22,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:42:22,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:42:22,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> afc88cbf4886a453fed887733400308a528b9724 [2019-11-28 02:42:22,892 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:42:22,912 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:42:22,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:42:22,918 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:42:22,919 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:42:22,919 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_flag-2.i [2019-11-28 02:42:22,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/313682ad9/068fa58a943c41ecb2b2ecbaa121e05a/FLAGaabee6956 [2019-11-28 02:42:23,605 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:42:23,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_flag-2.i [2019-11-28 02:42:23,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/313682ad9/068fa58a943c41ecb2b2ecbaa121e05a/FLAGaabee6956 [2019-11-28 02:42:23,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/313682ad9/068fa58a943c41ecb2b2ecbaa121e05a [2019-11-28 02:42:23,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:42:23,830 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:42:23,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:42:23,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:42:23,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:42:23,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:23" (1/1) ... [2019-11-28 02:42:23,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10525ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:23, skipping insertion in model container [2019-11-28 02:42:23,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:23" (1/1) ... [2019-11-28 02:42:23,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:42:23,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:42:24,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:42:24,284 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:42:24,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:42:24,392 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:42:24,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24 WrapperNode [2019-11-28 02:42:24,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:42:24,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:42:24,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:42:24,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:42:24,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (1/1) ... [2019-11-28 02:42:24,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (1/1) ... [2019-11-28 02:42:24,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (1/1) ... [2019-11-28 02:42:24,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (1/1) ... [2019-11-28 02:42:24,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (1/1) ... [2019-11-28 02:42:24,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (1/1) ... [2019-11-28 02:42:24,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (1/1) ... [2019-11-28 02:42:24,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:42:24,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:42:24,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:42:24,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:42:24,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:42:24,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:42:24,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:42:24,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 02:42:24,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 02:42:24,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 02:42:24,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 02:42:24,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 02:42:24,519 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-28 02:42:24,520 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:42:24,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-28 02:42:24,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 02:42:24,520 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 02:42:24,521 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 02:42:24,521 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 02:42:24,521 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 02:42:24,521 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 02:42:24,522 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 02:42:24,522 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 02:42:24,522 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 02:42:24,522 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 02:42:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 02:42:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 02:42:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 02:42:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 02:42:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 02:42:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 02:42:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 02:42:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 02:42:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 02:42:24,525 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 02:42:24,525 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 02:42:24,525 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 02:42:24,525 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 02:42:24,525 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 02:42:24,526 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 02:42:24,526 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 02:42:24,526 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 02:42:24,526 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 02:42:24,526 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 02:42:24,527 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 02:42:24,527 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 02:42:24,527 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 02:42:24,527 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 02:42:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 02:42:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 02:42:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 02:42:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 02:42:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 02:42:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 02:42:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 02:42:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 02:42:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 02:42:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 02:42:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 02:42:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 02:42:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 02:42:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 02:42:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 02:42:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 02:42:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 02:42:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 02:42:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 02:42:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 02:42:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 02:42:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 02:42:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 02:42:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 02:42:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 02:42:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 02:42:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 02:42:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 02:42:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 02:42:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 02:42:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 02:42:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 02:42:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 02:42:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 02:42:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 02:42:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 02:42:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 02:42:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 02:42:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 02:42:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 02:42:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 02:42:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 02:42:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 02:42:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 02:42:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 02:42:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 02:42:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 02:42:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 02:42:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 02:42:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 02:42:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 02:42:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 02:42:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 02:42:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 02:42:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 02:42:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 02:42:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 02:42:24,540 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 02:42:24,540 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 02:42:24,540 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 02:42:24,540 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 02:42:24,540 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 02:42:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 02:42:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 02:42:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 02:42:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 02:42:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 02:42:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 02:42:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 02:42:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 02:42:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 02:42:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 02:42:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 02:42:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 02:42:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 02:42:24,544 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-28 02:42:24,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:42:24,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 02:42:24,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 02:42:24,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 02:42:24,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 02:42:24,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 02:42:24,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:42:24,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:42:24,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:42:24,907 INFO L712 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-28 02:42:25,157 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:42:25,157 INFO L297 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-28 02:42:25,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:25 BoogieIcfgContainer [2019-11-28 02:42:25,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:42:25,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:42:25,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:42:25,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:42:25,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:42:23" (1/3) ... [2019-11-28 02:42:25,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea7aa9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:25, skipping insertion in model container [2019-11-28 02:42:25,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (2/3) ... [2019-11-28 02:42:25,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea7aa9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:25, skipping insertion in model container [2019-11-28 02:42:25,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:25" (3/3) ... [2019-11-28 02:42:25,168 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2019-11-28 02:42:25,178 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:42:25,187 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 22 error locations. [2019-11-28 02:42:25,201 INFO L249 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2019-11-28 02:42:25,224 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:42:25,224 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:42:25,224 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:42:25,225 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:42:25,225 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:42:25,225 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:42:25,225 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:42:25,226 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:42:25,244 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2019-11-28 02:42:25,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 02:42:25,254 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:25,255 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:25,256 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 02:42:25,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:25,263 INFO L82 PathProgramCache]: Analyzing trace with hash 2131838764, now seen corresponding path program 1 times [2019-11-28 02:42:25,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:25,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766628973] [2019-11-28 02:42:25,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:25,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:25,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766628973] [2019-11-28 02:42:25,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:25,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:42:25,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886757611] [2019-11-28 02:42:25,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:42:25,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:25,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:42:25,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:42:25,499 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 3 states. [2019-11-28 02:42:25,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:25,690 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2019-11-28 02:42:25,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:42:25,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-28 02:42:25,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:25,700 INFO L225 Difference]: With dead ends: 62 [2019-11-28 02:42:25,700 INFO L226 Difference]: Without dead ends: 55 [2019-11-28 02:42:25,702 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:42:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-28 02:42:25,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-11-28 02:42:25,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-28 02:42:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2019-11-28 02:42:25,741 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 10 [2019-11-28 02:42:25,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:25,741 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2019-11-28 02:42:25,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:42:25,742 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2019-11-28 02:42:25,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 02:42:25,742 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:25,743 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:25,743 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 02:42:25,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:25,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1662458549, now seen corresponding path program 1 times [2019-11-28 02:42:25,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:25,744 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684478312] [2019-11-28 02:42:25,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:25,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684478312] [2019-11-28 02:42:25,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:25,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:42:25,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33658546] [2019-11-28 02:42:25,876 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:42:25,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:25,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:42:25,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:42:25,877 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 5 states. [2019-11-28 02:42:26,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:26,151 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2019-11-28 02:42:26,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:42:26,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 02:42:26,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:26,154 INFO L225 Difference]: With dead ends: 91 [2019-11-28 02:42:26,154 INFO L226 Difference]: Without dead ends: 91 [2019-11-28 02:42:26,156 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:42:26,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-11-28 02:42:26,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2019-11-28 02:42:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-28 02:42:26,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2019-11-28 02:42:26,168 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 11 [2019-11-28 02:42:26,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:26,169 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2019-11-28 02:42:26,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:42:26,170 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2019-11-28 02:42:26,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 02:42:26,171 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:26,171 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:26,172 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 02:42:26,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:26,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1662458548, now seen corresponding path program 1 times [2019-11-28 02:42:26,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:26,173 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783154297] [2019-11-28 02:42:26,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:26,283 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783154297] [2019-11-28 02:42:26,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:26,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:42:26,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126053147] [2019-11-28 02:42:26,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:42:26,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:26,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:42:26,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:42:26,285 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand 5 states. [2019-11-28 02:42:26,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:26,508 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2019-11-28 02:42:26,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:42:26,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 02:42:26,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:26,510 INFO L225 Difference]: With dead ends: 67 [2019-11-28 02:42:26,510 INFO L226 Difference]: Without dead ends: 67 [2019-11-28 02:42:26,512 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:42:26,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-11-28 02:42:26,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2019-11-28 02:42:26,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-28 02:42:26,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2019-11-28 02:42:26,532 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 11 [2019-11-28 02:42:26,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:26,533 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2019-11-28 02:42:26,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:42:26,534 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2019-11-28 02:42:26,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 02:42:26,536 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:26,536 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:26,537 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 02:42:26,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:26,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1397561430, now seen corresponding path program 1 times [2019-11-28 02:42:26,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:26,543 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877214973] [2019-11-28 02:42:26,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:26,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:26,664 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877214973] [2019-11-28 02:42:26,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:26,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 02:42:26,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161594647] [2019-11-28 02:42:26,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:42:26,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:26,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:42:26,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:42:26,667 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 7 states. [2019-11-28 02:42:26,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:26,945 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2019-11-28 02:42:26,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 02:42:26,951 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-11-28 02:42:26,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:26,952 INFO L225 Difference]: With dead ends: 103 [2019-11-28 02:42:26,952 INFO L226 Difference]: Without dead ends: 103 [2019-11-28 02:42:26,953 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-28 02:42:26,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-28 02:42:26,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2019-11-28 02:42:26,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-28 02:42:26,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2019-11-28 02:42:26,961 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 18 [2019-11-28 02:42:26,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:26,961 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2019-11-28 02:42:26,962 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:42:26,963 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2019-11-28 02:42:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 02:42:26,964 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:26,965 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:26,965 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 02:42:26,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:26,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1397593132, now seen corresponding path program 1 times [2019-11-28 02:42:26,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:26,966 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635506617] [2019-11-28 02:42:26,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:27,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635506617] [2019-11-28 02:42:27,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:27,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 02:42:27,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080088557] [2019-11-28 02:42:27,054 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:42:27,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:27,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:42:27,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:42:27,056 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 7 states. [2019-11-28 02:42:27,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:27,298 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2019-11-28 02:42:27,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 02:42:27,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-11-28 02:42:27,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:27,300 INFO L225 Difference]: With dead ends: 101 [2019-11-28 02:42:27,300 INFO L226 Difference]: Without dead ends: 101 [2019-11-28 02:42:27,303 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-28 02:42:27,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-28 02:42:27,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 75. [2019-11-28 02:42:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-28 02:42:27,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2019-11-28 02:42:27,321 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 18 [2019-11-28 02:42:27,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:27,322 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2019-11-28 02:42:27,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:42:27,322 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2019-11-28 02:42:27,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 02:42:27,324 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:27,324 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:27,324 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 02:42:27,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:27,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1397592971, now seen corresponding path program 1 times [2019-11-28 02:42:27,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:27,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242568029] [2019-11-28 02:42:27,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:42:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:42:27,431 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:42:27,431 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:42:27,444 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-28 02:42:27,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:42:27 BoogieIcfgContainer [2019-11-28 02:42:27,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:42:27,460 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:42:27,460 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:42:27,460 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:42:27,461 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:25" (3/4) ... [2019-11-28 02:42:27,465 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:42:27,465 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:42:27,468 INFO L168 Benchmark]: Toolchain (without parser) took 3636.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 955.0 MB in the beginning and 883.4 MB in the end (delta: 71.6 MB). Peak memory consumption was 212.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:27,468 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:42:27,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 563.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -167.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:27,470 INFO L168 Benchmark]: Boogie Preprocessor took 63.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:27,471 INFO L168 Benchmark]: RCFGBuilder took 700.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:27,472 INFO L168 Benchmark]: TraceAbstraction took 2298.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 883.4 MB in the end (delta: 181.1 MB). Peak memory consumption was 181.1 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:27,472 INFO L168 Benchmark]: Witness Printer took 5.29 ms. Allocated memory is still 1.2 GB. Free memory is still 883.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:42:27,477 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 563.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -167.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 63.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 700.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2298.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 883.4 MB in the end (delta: 181.1 MB). Peak memory consumption was 181.1 MB. Max. memory is 11.5 GB. * Witness Printer took 5.29 ms. Allocated memory is still 1.2 GB. Free memory is still 883.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 520. Possible FailurePath: [L521] int flag = __VERIFIER_nondet_int(); [L522] List p, a, t; [L523] a = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L524] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L525] p = a VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L526] COND FALSE !(__VERIFIER_nondet_int()) [L537] p->h = 3 VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L538] p = a VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L539] COND TRUE \read(flag) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L540] EXPR p->h VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L540] COND FALSE !(p->h == 1) [L545] EXPR p->h VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L545] COND FALSE !(p->h != 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 78 locations, 22 error locations. Result: UNSAFE, OverallTime: 2.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 198 SDtfs, 350 SDslu, 297 SDs, 0 SdLazy, 605 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 77 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 3522 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:42:29,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:42:29,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:42:29,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-28 02:42:29,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:42:29,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:42:29,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:42:29,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:42:29,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:42:29,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:42:29,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:42:29,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:42:29,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:42:29,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:42:29,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:42:29,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:42:29,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:42:29,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:42:29,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:42:29,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:42:29,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:42:29,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:42:29,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:42:29,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:42:29,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:42:29,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:42:29,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:42:29,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:42:29,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:42:29,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:42:29,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:42:29,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:42:29,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:42:29,466 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-28 02:42:29,497 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:42:29,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:42:29,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:42:29,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:42:29,504 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:42:29,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:42:29,505 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:42:29,505 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:42:29,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:42:29,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:42:29,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:42:29,507 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:42:29,507 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:42:29,508 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:42:29,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:42:29,508 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:42:29,509 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 02:42:29,509 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 02:42:29,509 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:42:29,510 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:42:29,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:42:29,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:42:29,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:42:29,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:42:29,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:42:29,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:42:29,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:42:29,513 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 02:42:29,514 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 02:42:29,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 02:42:29,514 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> afc88cbf4886a453fed887733400308a528b9724 [2019-11-28 02:42:29,824 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:42:29,840 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:42:29,844 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:42:29,846 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:42:29,846 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:42:29,848 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_flag-2.i [2019-11-28 02:42:29,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28f53e437/ec305c2ff9d04651ba403f829c4e8437/FLAG7a20dc732 [2019-11-28 02:42:30,420 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:42:30,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_flag-2.i [2019-11-28 02:42:30,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28f53e437/ec305c2ff9d04651ba403f829c4e8437/FLAG7a20dc732 [2019-11-28 02:42:30,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28f53e437/ec305c2ff9d04651ba403f829c4e8437 [2019-11-28 02:42:30,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:42:30,736 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:42:30,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:42:30,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:42:30,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:42:30,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:30" (1/1) ... [2019-11-28 02:42:30,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57cbf806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:30, skipping insertion in model container [2019-11-28 02:42:30,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:30" (1/1) ... [2019-11-28 02:42:30,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:42:30,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:42:31,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:42:31,225 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:42:31,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:42:31,347 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:42:31,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:31 WrapperNode [2019-11-28 02:42:31,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:42:31,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:42:31,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:42:31,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:42:31,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:31" (1/1) ... [2019-11-28 02:42:31,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:31" (1/1) ... [2019-11-28 02:42:31,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:31" (1/1) ... [2019-11-28 02:42:31,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:31" (1/1) ... [2019-11-28 02:42:31,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:31" (1/1) ... [2019-11-28 02:42:31,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:31" (1/1) ... [2019-11-28 02:42:31,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:31" (1/1) ... [2019-11-28 02:42:31,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:42:31,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:42:31,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:42:31,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:42:31,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:42:31,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:42:31,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:42:31,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-28 02:42:31,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 02:42:31,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 02:42:31,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 02:42:31,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 02:42:31,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 02:42:31,493 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-28 02:42:31,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:42:31,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-28 02:42:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 02:42:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 02:42:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 02:42:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 02:42:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 02:42:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 02:42:31,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 02:42:31,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 02:42:31,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 02:42:31,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 02:42:31,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 02:42:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 02:42:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 02:42:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 02:42:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 02:42:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 02:42:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 02:42:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 02:42:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 02:42:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 02:42:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 02:42:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 02:42:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 02:42:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 02:42:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 02:42:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 02:42:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 02:42:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 02:42:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 02:42:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 02:42:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 02:42:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 02:42:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 02:42:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 02:42:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 02:42:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 02:42:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 02:42:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 02:42:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 02:42:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 02:42:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 02:42:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 02:42:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 02:42:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 02:42:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 02:42:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 02:42:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 02:42:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 02:42:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 02:42:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 02:42:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 02:42:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 02:42:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 02:42:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 02:42:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 02:42:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 02:42:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 02:42:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 02:42:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 02:42:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 02:42:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 02:42:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 02:42:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 02:42:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 02:42:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 02:42:31,511 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 02:42:31,511 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 02:42:31,511 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 02:42:31,511 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 02:42:31,511 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 02:42:31,511 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 02:42:31,512 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 02:42:31,512 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 02:42:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 02:42:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 02:42:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 02:42:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 02:42:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 02:42:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 02:42:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 02:42:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 02:42:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 02:42:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 02:42:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 02:42:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 02:42:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 02:42:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 02:42:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 02:42:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 02:42:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 02:42:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 02:42:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 02:42:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 02:42:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 02:42:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 02:42:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 02:42:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 02:42:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 02:42:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 02:42:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 02:42:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 02:42:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 02:42:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 02:42:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 02:42:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 02:42:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 02:42:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 02:42:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 02:42:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-28 02:42:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:42:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 02:42:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-28 02:42:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 02:42:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 02:42:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 02:42:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:42:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:42:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-28 02:42:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:42:31,928 INFO L712 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-28 02:42:32,261 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:42:32,261 INFO L297 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-28 02:42:32,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:32 BoogieIcfgContainer [2019-11-28 02:42:32,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:42:32,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:42:32,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:42:32,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:42:32,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:42:30" (1/3) ... [2019-11-28 02:42:32,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4769b587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:32, skipping insertion in model container [2019-11-28 02:42:32,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:31" (2/3) ... [2019-11-28 02:42:32,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4769b587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:32, skipping insertion in model container [2019-11-28 02:42:32,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:32" (3/3) ... [2019-11-28 02:42:32,275 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2019-11-28 02:42:32,287 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:42:32,296 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 22 error locations. [2019-11-28 02:42:32,309 INFO L249 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2019-11-28 02:42:32,330 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:42:32,330 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:42:32,331 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:42:32,331 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:42:32,331 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:42:32,331 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:42:32,332 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:42:32,332 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:42:32,350 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2019-11-28 02:42:32,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 02:42:32,364 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:32,365 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:32,365 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 02:42:32,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:32,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1337200692, now seen corresponding path program 1 times [2019-11-28 02:42:32,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:32,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517812353] [2019-11-28 02:42:32,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:32,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 02:42:32,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:32,550 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:32,572 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517812353] [2019-11-28 02:42:32,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:32,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 02:42:32,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491265233] [2019-11-28 02:42:32,582 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 02:42:32,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:32,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 02:42:32,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 02:42:32,602 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2019-11-28 02:42:32,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:32,633 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2019-11-28 02:42:32,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 02:42:32,634 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 02:42:32,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:32,652 INFO L225 Difference]: With dead ends: 61 [2019-11-28 02:42:32,652 INFO L226 Difference]: Without dead ends: 54 [2019-11-28 02:42:32,654 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 02:42:32,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-28 02:42:32,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-11-28 02:42:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-28 02:42:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2019-11-28 02:42:32,709 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 10 [2019-11-28 02:42:32,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:32,709 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2019-11-28 02:42:32,710 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 02:42:32,710 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2019-11-28 02:42:32,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 02:42:32,712 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:32,713 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:32,926 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 02:42:32,927 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 02:42:32,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:32,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1337201653, now seen corresponding path program 1 times [2019-11-28 02:42:32,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:32,929 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525925537] [2019-11-28 02:42:32,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:33,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:42:33,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:33,100 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-28 02:42:33,100 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:33,104 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:33,105 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:33,105 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-28 02:42:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:33,128 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:33,149 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525925537] [2019-11-28 02:42:33,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:33,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-28 02:42:33,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117139662] [2019-11-28 02:42:33,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:42:33,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:33,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:42:33,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:42:33,155 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 4 states. [2019-11-28 02:42:33,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:33,424 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2019-11-28 02:42:33,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:42:33,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 02:42:33,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:33,428 INFO L225 Difference]: With dead ends: 61 [2019-11-28 02:42:33,429 INFO L226 Difference]: Without dead ends: 61 [2019-11-28 02:42:33,430 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:42:33,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-28 02:42:33,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2019-11-28 02:42:33,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-28 02:42:33,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2019-11-28 02:42:33,439 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 10 [2019-11-28 02:42:33,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:33,439 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2019-11-28 02:42:33,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:42:33,440 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2019-11-28 02:42:33,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 02:42:33,440 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:33,440 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:33,653 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 02:42:33,654 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 02:42:33,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:33,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1337201652, now seen corresponding path program 1 times [2019-11-28 02:42:33,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:33,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783908881] [2019-11-28 02:42:33,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:33,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 02:42:33,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:33,789 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-28 02:42:33,790 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:33,796 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:33,796 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:33,796 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-28 02:42:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:33,820 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:33,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:33,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783908881] [2019-11-28 02:42:33,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:33,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-28 02:42:33,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211058152] [2019-11-28 02:42:33,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 02:42:33,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:33,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 02:42:33,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:42:33,970 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 6 states. [2019-11-28 02:42:34,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:34,399 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2019-11-28 02:42:34,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:42:34,401 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-28 02:42:34,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:34,402 INFO L225 Difference]: With dead ends: 73 [2019-11-28 02:42:34,403 INFO L226 Difference]: Without dead ends: 73 [2019-11-28 02:42:34,403 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:42:34,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-11-28 02:42:34,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2019-11-28 02:42:34,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-28 02:42:34,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2019-11-28 02:42:34,416 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 10 [2019-11-28 02:42:34,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:34,416 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2019-11-28 02:42:34,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 02:42:34,417 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2019-11-28 02:42:34,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 02:42:34,418 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:34,418 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:34,618 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 02:42:34,619 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 02:42:34,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:34,619 INFO L82 PathProgramCache]: Analyzing trace with hash 2081498834, now seen corresponding path program 1 times [2019-11-28 02:42:34,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:34,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799274013] [2019-11-28 02:42:34,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:34,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 02:42:34,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:34,747 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-28 02:42:34,747 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:34,750 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:34,750 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:34,751 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-11-28 02:42:34,781 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2019-11-28 02:42:34,785 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:34,788 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:34,788 INFO L508 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:34,788 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2019-11-28 02:42:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:34,800 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:34,814 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2019-11-28 02:42:34,815 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-28 02:42:34,822 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:34,823 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-28 02:42:34,823 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:7 [2019-11-28 02:42:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:34,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799274013] [2019-11-28 02:42:34,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:34,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-11-28 02:42:34,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014565550] [2019-11-28 02:42:34,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 02:42:34,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:34,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 02:42:34,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:42:34,832 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 6 states. [2019-11-28 02:42:35,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:35,245 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2019-11-28 02:42:35,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 02:42:35,246 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-28 02:42:35,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:35,247 INFO L225 Difference]: With dead ends: 106 [2019-11-28 02:42:35,248 INFO L226 Difference]: Without dead ends: 106 [2019-11-28 02:42:35,248 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:42:35,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-11-28 02:42:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 71. [2019-11-28 02:42:35,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-28 02:42:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2019-11-28 02:42:35,257 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 17 [2019-11-28 02:42:35,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:35,258 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2019-11-28 02:42:35,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 02:42:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2019-11-28 02:42:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 02:42:35,259 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:35,259 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:35,471 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-28 02:42:35,472 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 02:42:35,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:35,473 INFO L82 PathProgramCache]: Analyzing trace with hash 2081498995, now seen corresponding path program 1 times [2019-11-28 02:42:35,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:35,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913944501] [2019-11-28 02:42:35,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:42:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:42:35,621 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 02:42:35,622 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:42:35,822 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-28 02:42:35,833 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-28 02:42:35,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:42:35 BoogieIcfgContainer [2019-11-28 02:42:35,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:42:35,849 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:42:35,849 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:42:35,849 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:42:35,850 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:32" (3/4) ... [2019-11-28 02:42:35,872 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:42:35,872 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:42:35,878 INFO L168 Benchmark]: Toolchain (without parser) took 5138.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.3 MB). Free memory was 956.3 MB in the beginning and 1.2 GB in the end (delta: -235.6 MB). Peak memory consumption was 289.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:35,879 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:42:35,883 INFO L168 Benchmark]: CACSL2BoogieTranslator took 611.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -160.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:35,884 INFO L168 Benchmark]: Boogie Preprocessor took 80.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:35,884 INFO L168 Benchmark]: RCFGBuilder took 833.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:35,888 INFO L168 Benchmark]: TraceAbstraction took 3584.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 813.4 MB in the end (delta: 245.7 MB). Peak memory consumption was 245.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:35,889 INFO L168 Benchmark]: Witness Printer took 22.93 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 813.4 MB in the beginning and 1.2 GB in the end (delta: -378.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:35,894 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 611.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -160.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 80.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 833.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3584.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 813.4 MB in the end (delta: 245.7 MB). Peak memory consumption was 245.7 MB. Max. memory is 11.5 GB. * Witness Printer took 22.93 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 813.4 MB in the beginning and 1.2 GB in the end (delta: -378.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 520. Possible FailurePath: [L521] int flag = __VERIFIER_nondet_int(); [L522] List p, a, t; [L523] a = (List) malloc(sizeof(struct node)) VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}] [L524] COND FALSE !(a == 0) VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}] [L525] p = a VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}] [L526] COND FALSE !(__VERIFIER_nondet_int()) [L537] p->h = 3 VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}] [L538] p = a VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}] [L539] COND TRUE \read(flag) VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}] [L540] EXPR p->h VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L540] COND FALSE !(p->h == 1) [L545] EXPR p->h VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L545] COND FALSE !(p->h != 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 83 locations, 22 error locations. Result: UNSAFE, OverallTime: 3.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 161 SDtfs, 303 SDslu, 167 SDs, 0 SdLazy, 204 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 50 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 3770 SizeOfPredicates, 16 NumberOfNonLiveVariables, 194 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...