./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 86b203c3a804c103d90401bd32cfcff28939b920 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:54:29,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:54:29,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:54:29,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:54:29,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:54:29,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:54:29,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:54:29,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:54:29,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:54:29,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:54:29,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:54:29,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:54:29,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:54:29,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:54:29,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:54:29,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:54:29,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:54:29,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:54:29,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:54:29,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:54:29,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:54:29,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:54:29,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:54:29,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:54:29,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:54:29,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:54:29,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:54:29,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:54:29,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:54:29,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:54:29,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:54:29,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:54:29,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:54:29,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:54:29,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:54:29,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:54:29,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:54:29,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:54:29,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:54:29,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:54:29,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:54:29,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 08:54:29,509 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:54:29,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:54:29,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:54:29,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:54:29,522 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:54:29,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:54:29,523 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:54:29,523 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:54:29,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:54:29,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:54:29,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:54:29,524 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 08:54:29,524 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 08:54:29,524 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 08:54:29,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:54:29,524 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:54:29,525 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:54:29,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:54:29,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:54:29,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:54:29,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:54:29,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:54:29,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:54:29,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:54:29,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:54:29,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:54:29,528 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86b203c3a804c103d90401bd32cfcff28939b920 [2019-10-22 08:54:29,563 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:54:29,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:54:29,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:54:29,582 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:54:29,582 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:54:29,583 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2019-10-22 08:54:29,644 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer/data/d141bb806/d523b9d7bc524b8b95830d421cf3751c/FLAGf2db6d568 [2019-10-22 08:54:30,170 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:54:30,171 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2019-10-22 08:54:30,184 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer/data/d141bb806/d523b9d7bc524b8b95830d421cf3751c/FLAGf2db6d568 [2019-10-22 08:54:30,440 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer/data/d141bb806/d523b9d7bc524b8b95830d421cf3751c [2019-10-22 08:54:30,443 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:54:30,445 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 08:54:30,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:30,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:54:30,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:54:30,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:30" (1/1) ... [2019-10-22 08:54:30,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@311bf3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:30, skipping insertion in model container [2019-10-22 08:54:30,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:30" (1/1) ... [2019-10-22 08:54:30,466 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:54:30,513 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:54:30,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:30,909 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:54:30,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:31,033 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:54:31,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:31 WrapperNode [2019-10-22 08:54:31,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:31,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:54:31,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:54:31,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:54:31,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:31" (1/1) ... [2019-10-22 08:54:31,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:31" (1/1) ... [2019-10-22 08:54:31,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:31" (1/1) ... [2019-10-22 08:54:31,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:31" (1/1) ... [2019-10-22 08:54:31,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:31" (1/1) ... [2019-10-22 08:54:31,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:31" (1/1) ... [2019-10-22 08:54:31,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:31" (1/1) ... [2019-10-22 08:54:31,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:54:31,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:54:31,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:54:31,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:54:31,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:54:31,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 08:54:31,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:54:31,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 08:54:31,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 08:54:31,152 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-22 08:54:31,152 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2019-10-22 08:54:31,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 08:54:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 08:54:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 08:54:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 08:54:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 08:54:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 08:54:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 08:54:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 08:54:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 08:54:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 08:54:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 08:54:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 08:54:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 08:54:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 08:54:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 08:54:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 08:54:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 08:54:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 08:54:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 08:54:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 08:54:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 08:54:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 08:54:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 08:54:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 08:54:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 08:54:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 08:54:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 08:54:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 08:54:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 08:54:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 08:54:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 08:54:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 08:54:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 08:54:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 08:54:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 08:54:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 08:54:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 08:54:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 08:54:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 08:54:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 08:54:31,159 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 08:54:31,159 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 08:54:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 08:54:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 08:54:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 08:54:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 08:54:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 08:54:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 08:54:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 08:54:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 08:54:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 08:54:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 08:54:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 08:54:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 08:54:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 08:54:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 08:54:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 08:54:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-22 08:54:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 08:54:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 08:54:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 08:54:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 08:54:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 08:54:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 08:54:31,163 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 08:54:31,163 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 08:54:31,163 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 08:54:31,163 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 08:54:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 08:54:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 08:54:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 08:54:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 08:54:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 08:54:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 08:54:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 08:54:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 08:54:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 08:54:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 08:54:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 08:54:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 08:54:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 08:54:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 08:54:31,166 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 08:54:31,166 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 08:54:31,166 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 08:54:31,166 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 08:54:31,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 08:54:31,166 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 08:54:31,166 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 08:54:31,167 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 08:54:31,167 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 08:54:31,167 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 08:54:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 08:54:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 08:54:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 08:54:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 08:54:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 08:54:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 08:54:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 08:54:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 08:54:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 08:54:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 08:54:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 08:54:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 08:54:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 08:54:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 08:54:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-22 08:54:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2019-10-22 08:54:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 08:54:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 08:54:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 08:54:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 08:54:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:54:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 08:54:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:54:31,524 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-22 08:54:31,680 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:54:31,680 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-22 08:54:31,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:31 BoogieIcfgContainer [2019-10-22 08:54:31,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:54:31,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:54:31,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:54:31,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:54:31,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:54:30" (1/3) ... [2019-10-22 08:54:31,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb1bdee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:31, skipping insertion in model container [2019-10-22 08:54:31,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:31" (2/3) ... [2019-10-22 08:54:31,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb1bdee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:31, skipping insertion in model container [2019-10-22 08:54:31,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:31" (3/3) ... [2019-10-22 08:54:31,693 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-1.i [2019-10-22 08:54:31,704 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:54:31,714 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2019-10-22 08:54:31,726 INFO L249 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2019-10-22 08:54:31,758 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:54:31,758 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 08:54:31,759 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:54:31,759 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:54:31,759 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:54:31,760 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:54:31,760 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:54:31,760 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:54:31,781 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2019-10-22 08:54:31,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 08:54:31,794 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:31,796 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:31,798 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:54:31,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:31,805 INFO L82 PathProgramCache]: Analyzing trace with hash 975324898, now seen corresponding path program 1 times [2019-10-22 08:54:31,814 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:31,815 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723180016] [2019-10-22 08:54:31,815 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:31,815 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:31,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:32,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:54:32,240 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723180016] [2019-10-22 08:54:32,241 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40013299] [2019-10-22 08:54:32,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:32,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-22 08:54:32,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:32,404 INFO L375 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 [2019-10-22 08:54:32,405 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:54:32,408 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:54:32,408 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:54:32,409 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-10-22 08:54:32,471 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:54:32,471 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2019-10-22 08:54:32,473 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:54:32,499 INFO L567 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-10-22 08:54:32,503 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 08:54:32,503 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2019-10-22 08:54:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:32,526 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:32,526 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2019-10-22 08:54:32,527 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541628094] [2019-10-22 08:54:32,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-22 08:54:32,532 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:32,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-22 08:54:32,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:54:32,548 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 12 states. [2019-10-22 08:54:32,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:32,927 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2019-10-22 08:54:32,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 08:54:32,930 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2019-10-22 08:54:32,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:32,944 INFO L225 Difference]: With dead ends: 43 [2019-10-22 08:54:32,944 INFO L226 Difference]: Without dead ends: 37 [2019-10-22 08:54:32,946 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2019-10-22 08:54:32,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-22 08:54:32,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-22 08:54:32,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 08:54:32,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2019-10-22 08:54:32,998 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 19 [2019-10-22 08:54:33,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:33,001 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2019-10-22 08:54:33,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-22 08:54:33,001 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2019-10-22 08:54:33,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 08:54:33,011 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:33,012 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:33,212 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:33,213 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:54:33,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:33,213 INFO L82 PathProgramCache]: Analyzing trace with hash 975324899, now seen corresponding path program 1 times [2019-10-22 08:54:33,214 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:33,214 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981550171] [2019-10-22 08:54:33,214 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:33,214 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:33,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:33,502 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:54:33,502 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981550171] [2019-10-22 08:54:33,502 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501487348] [2019-10-22 08:54:33,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:33,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 28 conjunts are in the unsatisfiable core [2019-10-22 08:54:33,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:33,629 INFO L375 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 [2019-10-22 08:54:33,630 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:54:33,637 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:54:33,644 INFO L375 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 [2019-10-22 08:54:33,644 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 08:54:33,651 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:54:33,652 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:54:33,652 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-10-22 08:54:33,698 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:54:33,698 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-10-22 08:54:33,699 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:54:33,708 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:54:33,713 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2019-10-22 08:54:33,714 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 08:54:33,723 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:54:33,724 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 08:54:33,724 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:18 [2019-10-22 08:54:33,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:33,756 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:33,756 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2019-10-22 08:54:33,757 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609453286] [2019-10-22 08:54:33,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-22 08:54:33,758 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:33,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-22 08:54:33,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:54:33,760 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 12 states. [2019-10-22 08:54:34,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:34,071 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2019-10-22 08:54:34,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 08:54:34,072 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2019-10-22 08:54:34,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:34,073 INFO L225 Difference]: With dead ends: 32 [2019-10-22 08:54:34,073 INFO L226 Difference]: Without dead ends: 32 [2019-10-22 08:54:34,074 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2019-10-22 08:54:34,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-22 08:54:34,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-10-22 08:54:34,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-22 08:54:34,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2019-10-22 08:54:34,079 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 19 [2019-10-22 08:54:34,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:34,080 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2019-10-22 08:54:34,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-22 08:54:34,080 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2019-10-22 08:54:34,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 08:54:34,081 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:34,081 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:34,281 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:34,282 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:54:34,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:34,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1236254071, now seen corresponding path program 1 times [2019-10-22 08:54:34,282 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:34,283 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462461572] [2019-10-22 08:54:34,283 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:34,283 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:34,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:34,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:54:34,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462461572] [2019-10-22 08:54:34,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285850915] [2019-10-22 08:54:34,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:34,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:54:34,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:34,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:54:34,580 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:34,580 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2019-10-22 08:54:34,581 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418235436] [2019-10-22 08:54:34,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:54:34,582 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:34,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:54:34,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:54:34,582 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2019-10-22 08:54:34,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:34,687 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2019-10-22 08:54:34,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:54:34,687 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2019-10-22 08:54:34,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:34,688 INFO L225 Difference]: With dead ends: 31 [2019-10-22 08:54:34,688 INFO L226 Difference]: Without dead ends: 31 [2019-10-22 08:54:34,688 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:54:34,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-22 08:54:34,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-10-22 08:54:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-22 08:54:34,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2019-10-22 08:54:34,691 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 27 [2019-10-22 08:54:34,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:34,692 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2019-10-22 08:54:34,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:54:34,692 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2019-10-22 08:54:34,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 08:54:34,693 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:34,693 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:34,893 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:34,894 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:54:34,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:34,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1665781067, now seen corresponding path program 1 times [2019-10-22 08:54:34,894 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:34,895 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926540220] [2019-10-22 08:54:34,895 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:34,895 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:34,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:54:35,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926540220] [2019-10-22 08:54:35,041 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:35,042 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-22 08:54:35,042 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968717973] [2019-10-22 08:54:35,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-22 08:54:35,042 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:35,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 08:54:35,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:54:35,043 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 11 states. [2019-10-22 08:54:35,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:35,227 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2019-10-22 08:54:35,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 08:54:35,229 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2019-10-22 08:54:35,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:35,229 INFO L225 Difference]: With dead ends: 30 [2019-10-22 08:54:35,229 INFO L226 Difference]: Without dead ends: 30 [2019-10-22 08:54:35,230 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-22 08:54:35,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-22 08:54:35,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-10-22 08:54:35,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 08:54:35,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2019-10-22 08:54:35,235 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 29 [2019-10-22 08:54:35,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:35,235 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2019-10-22 08:54:35,235 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-22 08:54:35,235 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2019-10-22 08:54:35,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 08:54:35,236 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:35,236 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:35,237 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:54:35,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:35,237 INFO L82 PathProgramCache]: Analyzing trace with hash 99605601, now seen corresponding path program 1 times [2019-10-22 08:54:35,237 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:35,238 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703869189] [2019-10-22 08:54:35,238 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:35,238 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:35,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:54:35,365 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703869189] [2019-10-22 08:54:35,366 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:35,366 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-22 08:54:35,366 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302518784] [2019-10-22 08:54:35,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-22 08:54:35,367 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:35,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 08:54:35,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:54:35,368 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 11 states. [2019-10-22 08:54:35,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:35,559 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-10-22 08:54:35,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 08:54:35,559 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2019-10-22 08:54:35,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:35,560 INFO L225 Difference]: With dead ends: 29 [2019-10-22 08:54:35,560 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 08:54:35,561 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-22 08:54:35,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 08:54:35,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-22 08:54:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 08:54:35,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2019-10-22 08:54:35,564 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 30 [2019-10-22 08:54:35,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:35,564 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2019-10-22 08:54:35,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-22 08:54:35,565 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2019-10-22 08:54:35,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 08:54:35,565 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:35,565 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:35,566 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:54:35,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:35,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1207193587, now seen corresponding path program 1 times [2019-10-22 08:54:35,566 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:35,566 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628029151] [2019-10-22 08:54:35,567 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:35,567 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:35,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:54:35,792 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628029151] [2019-10-22 08:54:35,792 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:35,792 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-22 08:54:35,792 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865130208] [2019-10-22 08:54:35,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-22 08:54:35,793 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:35,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-22 08:54:35,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2019-10-22 08:54:35,793 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 16 states. [2019-10-22 08:54:36,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:36,081 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2019-10-22 08:54:36,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 08:54:36,082 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2019-10-22 08:54:36,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:36,082 INFO L225 Difference]: With dead ends: 28 [2019-10-22 08:54:36,083 INFO L226 Difference]: Without dead ends: 28 [2019-10-22 08:54:36,083 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2019-10-22 08:54:36,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-22 08:54:36,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-22 08:54:36,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-22 08:54:36,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-10-22 08:54:36,086 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 31 [2019-10-22 08:54:36,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:36,087 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-10-22 08:54:36,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-22 08:54:36,087 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-10-22 08:54:36,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-22 08:54:36,087 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:36,088 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:36,088 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-10-22 08:54:36,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:36,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1231704548, now seen corresponding path program 1 times [2019-10-22 08:54:36,088 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:36,089 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107119508] [2019-10-22 08:54:36,089 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:36,089 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:36,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:54:36,492 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107119508] [2019-10-22 08:54:36,492 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628650761] [2019-10-22 08:54:36,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:36,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 38 conjunts are in the unsatisfiable core [2019-10-22 08:54:36,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:36,707 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:54:36,708 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 63 [2019-10-22 08:54:36,709 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:54:36,743 INFO L567 ElimStorePlain]: treesize reduction 28, result has 50.9 percent of original size [2019-10-22 08:54:36,744 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:54:36,744 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:29 [2019-10-22 08:54:36,784 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2019-10-22 08:54:36,785 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:54:36,796 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:54:36,797 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:54:36,797 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:45 [2019-10-22 08:54:36,878 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 50 treesize of output 26 [2019-10-22 08:54:36,879 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:54:36,889 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:54:36,890 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:54:36,890 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:60, output treesize:45 [2019-10-22 08:54:36,907 INFO L375 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 42 treesize of output 22 [2019-10-22 08:54:36,908 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:54:36,921 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:54:36,921 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:54:36,921 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:52, output treesize:29 [2019-10-22 08:54:37,030 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2019-10-22 08:54:37,031 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:54:37,060 INFO L567 ElimStorePlain]: treesize reduction 4, result has 86.2 percent of original size [2019-10-22 08:54:37,061 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 08:54:37,061 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:25 [2019-10-22 08:54:37,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:54:37,136 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:54:37,137 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2019-10-22 08:54:37,137 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:54:37,158 INFO L567 ElimStorePlain]: treesize reduction 14, result has 67.4 percent of original size [2019-10-22 08:54:37,159 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-22 08:54:37,159 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:29 [2019-10-22 08:54:37,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:54:37,229 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:54:37,229 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2019-10-22 08:54:37,229 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150603184] [2019-10-22 08:54:37,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-22 08:54:37,230 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:37,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-22 08:54:37,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2019-10-22 08:54:37,231 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 16 states. [2019-10-22 08:54:37,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:37,634 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-10-22 08:54:37,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 08:54:37,634 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2019-10-22 08:54:37,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:37,635 INFO L225 Difference]: With dead ends: 27 [2019-10-22 08:54:37,635 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:54:37,635 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2019-10-22 08:54:37,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:54:37,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:54:37,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:54:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:54:37,636 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2019-10-22 08:54:37,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:37,636 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:54:37,636 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-22 08:54:37,636 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:54:37,636 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:54:37,836 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:37,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:54:37 BoogieIcfgContainer [2019-10-22 08:54:37,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:54:37,841 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:54:37,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:54:37,841 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:54:37,841 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:31" (3/4) ... [2019-10-22 08:54:37,844 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:54:37,850 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-10-22 08:54:37,851 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure myexit [2019-10-22 08:54:37,851 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-10-22 08:54:37,851 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-10-22 08:54:37,851 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-10-22 08:54:37,851 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure alloc_node [2019-10-22 08:54:37,855 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-10-22 08:54:37,855 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 08:54:37,855 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 08:54:37,903 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c9b028f9-1afd-4966-a488-0dfd3b292446/bin/uautomizer/witness.graphml [2019-10-22 08:54:37,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:54:37,905 INFO L168 Benchmark]: Toolchain (without parser) took 7459.89 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 295.7 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -280.8 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:37,905 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:37,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 588.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -201.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:37,906 INFO L168 Benchmark]: Boogie Preprocessor took 56.87 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: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:37,906 INFO L168 Benchmark]: RCFGBuilder took 590.41 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: 49.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:37,906 INFO L168 Benchmark]: TraceAbstraction took 6155.42 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 129.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -135.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:37,907 INFO L168 Benchmark]: Witness Printer took 62.65 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:37,908 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 588.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -201.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 56.87 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: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 590.41 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: 49.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6155.42 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 129.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -135.5 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 62.65 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 572]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 572]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 568]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 570]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 570]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 55 locations, 15 error locations. Result: SAFE, OverallTime: 6.0s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 130 SDslu, 564 SDs, 0 SdLazy, 1261 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 233 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 273 ConstructedInterpolants, 14 QuantifiedInterpolants, 60220 SizeOfPredicates, 20 NumberOfNonLiveVariables, 434 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 27/55 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 proved your program to be correct! Received shutdown request...