./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/stroeder1-alloca-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_da025042-d5d4-499e-968f-ee49f54242ca/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_da025042-d5d4-499e-968f-ee49f54242ca/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_da025042-d5d4-499e-968f-ee49f54242ca/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_da025042-d5d4-499e-968f-ee49f54242ca/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/stroeder1-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_da025042-d5d4-499e-968f-ee49f54242ca/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_da025042-d5d4-499e-968f-ee49f54242ca/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 1643f1caf494dad598b4df826effeedd3e612fb8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:57:39,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:57:39,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:57:39,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:57:39,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:57:39,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:57:39,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:57:39,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:57:39,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:57:39,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:57:39,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:57:39,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:57:39,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:57:39,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:57:39,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:57:39,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:57:39,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:57:39,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:57:39,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:57:39,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:57:39,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:57:39,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:57:39,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:57:39,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:57:39,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:57:39,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:57:39,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:57:39,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:57:39,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:57:39,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:57:39,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:57:39,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:57:39,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:57:39,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:57:39,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:57:39,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:57:39,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:57:39,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:57:39,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:57:39,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:57:39,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:57:39,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_da025042-d5d4-499e-968f-ee49f54242ca/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 08:57:39,718 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:57:39,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:57:39,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:57:39,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:57:39,719 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:57:39,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:57:39,720 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:57:39,720 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:57:39,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:57:39,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:57:39,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:57:39,720 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 08:57:39,721 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 08:57:39,721 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 08:57:39,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:57:39,721 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:57:39,721 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:57:39,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:57:39,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:57:39,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:57:39,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:57:39,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:57:39,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:57:39,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:57:39,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:57:39,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:57:39,723 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_da025042-d5d4-499e-968f-ee49f54242ca/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 -> 1643f1caf494dad598b4df826effeedd3e612fb8 [2019-10-22 08:57:39,747 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:57:39,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:57:39,761 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:57:39,764 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:57:39,765 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:57:39,765 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_da025042-d5d4-499e-968f-ee49f54242ca/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/stroeder1-alloca-1.i [2019-10-22 08:57:39,819 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_da025042-d5d4-499e-968f-ee49f54242ca/bin/uautomizer/data/ade5efbb5/e0e01de7ccf1484dbf83a8331bac270f/FLAG0171f4b47 [2019-10-22 08:57:40,308 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:57:40,309 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_da025042-d5d4-499e-968f-ee49f54242ca/sv-benchmarks/c/array-memsafety/stroeder1-alloca-1.i [2019-10-22 08:57:40,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_da025042-d5d4-499e-968f-ee49f54242ca/bin/uautomizer/data/ade5efbb5/e0e01de7ccf1484dbf83a8331bac270f/FLAG0171f4b47 [2019-10-22 08:57:40,790 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_da025042-d5d4-499e-968f-ee49f54242ca/bin/uautomizer/data/ade5efbb5/e0e01de7ccf1484dbf83a8331bac270f [2019-10-22 08:57:40,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:57:40,795 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 08:57:40,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:40,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:57:40,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:57:40,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:40" (1/1) ... [2019-10-22 08:57:40,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b32060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:40, skipping insertion in model container [2019-10-22 08:57:40,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:40" (1/1) ... [2019-10-22 08:57:40,816 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:57:40,854 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:57:41,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:41,241 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:57:41,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:41,325 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:57:41,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:41 WrapperNode [2019-10-22 08:57:41,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:41,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:57:41,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:57:41,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:57:41,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:41" (1/1) ... [2019-10-22 08:57:41,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:41" (1/1) ... [2019-10-22 08:57:41,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:41" (1/1) ... [2019-10-22 08:57:41,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:41" (1/1) ... [2019-10-22 08:57:41,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:41" (1/1) ... [2019-10-22 08:57:41,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:41" (1/1) ... [2019-10-22 08:57:41,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:41" (1/1) ... [2019-10-22 08:57:41,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:57:41,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:57:41,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:57:41,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:57:41,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da025042-d5d4-499e-968f-ee49f54242ca/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 08:57:41,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 08:57:41,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:57:41,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 08:57:41,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 08:57:41,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-22 08:57:41,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-22 08:57:41,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-22 08:57:41,424 INFO L138 BoogieDeclarations]: Found implementation of procedure sumOfThirdBytes [2019-10-22 08:57:41,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 08:57:41,425 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 08:57:41,425 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 08:57:41,425 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 08:57:41,425 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 08:57:41,425 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 08:57:41,425 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 08:57:41,425 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 08:57:41,425 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 08:57:41,425 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 08:57:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 08:57:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 08:57:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 08:57:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 08:57:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 08:57:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 08:57:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 08:57:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 08:57:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 08:57:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-22 08:57:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-22 08:57:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-22 08:57:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 08:57:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 08:57:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 08:57:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 08:57:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 08:57:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 08:57:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 08:57:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 08:57:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 08:57:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 08:57:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 08:57:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 08:57:41,427 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 08:57:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 08:57:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 08:57:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 08:57:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 08:57:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 08:57:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 08:57:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 08:57:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 08:57:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 08:57:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 08:57:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 08:57:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 08:57:41,428 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 08:57:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 08:57:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 08:57:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 08:57:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 08:57:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 08:57:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 08:57:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 08:57:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 08:57:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 08:57:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 08:57:41,429 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 08:57:41,430 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 08:57:41,430 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 08:57:41,430 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 08:57:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 08:57:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 08:57:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 08:57:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 08:57:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 08:57:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 08:57:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 08:57:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 08:57:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 08:57:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 08:57:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 08:57:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 08:57:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 08:57:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 08:57:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 08:57:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 08:57:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 08:57:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 08:57:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 08:57:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 08:57:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 08:57:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 08:57:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 08:57:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 08:57:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 08:57:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 08:57:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 08:57:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 08:57:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 08:57:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 08:57:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 08:57:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 08:57:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 08:57:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 08:57:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 08:57:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 08:57:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 08:57:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 08:57:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 08:57:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 08:57:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 08:57:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 08:57:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 08:57:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 08:57:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 08:57:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 08:57:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-22 08:57:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure sumOfThirdBytes [2019-10-22 08:57:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:57:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 08:57:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:57:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:57:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:57:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 08:57:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:57:41,840 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:57:41,840 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-22 08:57:41,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:41 BoogieIcfgContainer [2019-10-22 08:57:41,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:57:41,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:57:41,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:57:41,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:57:41,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:57:40" (1/3) ... [2019-10-22 08:57:41,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5227b70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:41, skipping insertion in model container [2019-10-22 08:57:41,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:41" (2/3) ... [2019-10-22 08:57:41,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5227b70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:41, skipping insertion in model container [2019-10-22 08:57:41,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:41" (3/3) ... [2019-10-22 08:57:41,847 INFO L109 eAbstractionObserver]: Analyzing ICFG stroeder1-alloca-1.i [2019-10-22 08:57:41,855 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:57:41,861 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-22 08:57:41,874 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-22 08:57:41,888 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:57:41,889 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 08:57:41,889 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:57:41,889 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:57:41,889 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:57:41,889 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:57:41,889 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:57:41,889 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:57:41,904 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-10-22 08:57:41,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:57:41,911 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:41,912 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:41,913 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sumOfThirdBytesErr0REQUIRES_VIOLATION, sumOfThirdBytesErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 08:57:41,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:41,919 INFO L82 PathProgramCache]: Analyzing trace with hash 760722539, now seen corresponding path program 1 times [2019-10-22 08:57:41,926 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:41,927 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069964839] [2019-10-22 08:57:41,927 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:41,927 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:41,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:42,093 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069964839] [2019-10-22 08:57:42,093 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:42,094 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:57:42,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714722859] [2019-10-22 08:57:42,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:57:42,099 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:42,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:57:42,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:57:42,112 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2019-10-22 08:57:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:42,196 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2019-10-22 08:57:42,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:57:42,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-22 08:57:42,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:42,206 INFO L225 Difference]: With dead ends: 30 [2019-10-22 08:57:42,206 INFO L226 Difference]: Without dead ends: 27 [2019-10-22 08:57:42,208 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:57:42,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-22 08:57:42,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-10-22 08:57:42,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-22 08:57:42,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-10-22 08:57:42,236 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2019-10-22 08:57:42,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:42,237 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-10-22 08:57:42,237 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:57:42,237 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-10-22 08:57:42,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:57:42,237 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:42,238 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:42,238 INFO L410 AbstractCegarLoop]: === Iteration 2 === [sumOfThirdBytesErr0REQUIRES_VIOLATION, sumOfThirdBytesErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 08:57:42,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:42,238 INFO L82 PathProgramCache]: Analyzing trace with hash 760722540, now seen corresponding path program 1 times [2019-10-22 08:57:42,238 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:42,238 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869138868] [2019-10-22 08:57:42,239 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:42,239 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:42,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:42,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:42,321 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869138868] [2019-10-22 08:57:42,322 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:42,322 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:57:42,322 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097065199] [2019-10-22 08:57:42,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:57:42,324 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:42,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:57:42,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:57:42,324 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 6 states. [2019-10-22 08:57:42,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:42,423 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2019-10-22 08:57:42,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:57:42,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-10-22 08:57:42,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:42,424 INFO L225 Difference]: With dead ends: 31 [2019-10-22 08:57:42,424 INFO L226 Difference]: Without dead ends: 31 [2019-10-22 08:57:42,425 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:57:42,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-22 08:57:42,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2019-10-22 08:57:42,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 08:57:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-10-22 08:57:42,431 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 10 [2019-10-22 08:57:42,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:42,431 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-10-22 08:57:42,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:57:42,432 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-10-22 08:57:42,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 08:57:42,432 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:42,432 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:42,432 INFO L410 AbstractCegarLoop]: === Iteration 3 === [sumOfThirdBytesErr0REQUIRES_VIOLATION, sumOfThirdBytesErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 08:57:42,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:42,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1740626641, now seen corresponding path program 1 times [2019-10-22 08:57:42,433 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:42,433 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630987440] [2019-10-22 08:57:42,433 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:42,434 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:42,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:42,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630987440] [2019-10-22 08:57:42,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433400096] [2019-10-22 08:57:42,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da025042-d5d4-499e-968f-ee49f54242ca/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 08:57:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:42,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:42,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:42,722 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:57:42,722 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2019-10-22 08:57:42,722 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758616460] [2019-10-22 08:57:42,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:57:42,722 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:42,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:57:42,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:57:42,723 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 5 states. [2019-10-22 08:57:42,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:42,773 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2019-10-22 08:57:42,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:57:42,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-10-22 08:57:42,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:42,779 INFO L225 Difference]: With dead ends: 39 [2019-10-22 08:57:42,779 INFO L226 Difference]: Without dead ends: 39 [2019-10-22 08:57:42,779 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:57:42,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-22 08:57:42,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2019-10-22 08:57:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-22 08:57:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-10-22 08:57:42,790 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 14 [2019-10-22 08:57:42,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:42,791 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2019-10-22 08:57:42,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:57:42,791 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2019-10-22 08:57:42,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 08:57:42,792 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:42,792 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:42,993 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:42,993 INFO L410 AbstractCegarLoop]: === Iteration 4 === [sumOfThirdBytesErr0REQUIRES_VIOLATION, sumOfThirdBytesErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 08:57:42,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:42,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1744994029, now seen corresponding path program 1 times [2019-10-22 08:57:42,993 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:42,994 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297560657] [2019-10-22 08:57:42,994 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:42,994 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:42,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:43,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297560657] [2019-10-22 08:57:43,128 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889202164] [2019-10-22 08:57:43,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da025042-d5d4-499e-968f-ee49f54242ca/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 08:57:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:43,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 08:57:43,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:43,273 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 8 treesize of output 7 [2019-10-22 08:57:43,273 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:57:43,284 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:57:43,285 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:57:43,285 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2019-10-22 08:57:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:43,329 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:57:43,329 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2019-10-22 08:57:43,330 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60215029] [2019-10-22 08:57:43,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:57:43,330 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:43,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:57:43,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:57:43,331 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 8 states. [2019-10-22 08:57:43,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:43,474 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2019-10-22 08:57:43,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:57:43,475 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-10-22 08:57:43,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:43,476 INFO L225 Difference]: With dead ends: 36 [2019-10-22 08:57:43,476 INFO L226 Difference]: Without dead ends: 36 [2019-10-22 08:57:43,476 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:57:43,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-22 08:57:43,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2019-10-22 08:57:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-22 08:57:43,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2019-10-22 08:57:43,480 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 14 [2019-10-22 08:57:43,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:43,480 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2019-10-22 08:57:43,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:57:43,481 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2019-10-22 08:57:43,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 08:57:43,481 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:43,481 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:43,683 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:43,684 INFO L410 AbstractCegarLoop]: === Iteration 5 === [sumOfThirdBytesErr0REQUIRES_VIOLATION, sumOfThirdBytesErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 08:57:43,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:43,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1868775407, now seen corresponding path program 1 times [2019-10-22 08:57:43,684 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:43,684 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73323506] [2019-10-22 08:57:43,685 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:43,685 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:43,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:43,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:57:43,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73323506] [2019-10-22 08:57:43,809 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:43,809 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:57:43,809 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429515193] [2019-10-22 08:57:43,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:57:43,815 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:43,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:57:43,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:57:43,815 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 7 states. [2019-10-22 08:57:44,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:44,066 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2019-10-22 08:57:44,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:57:44,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-10-22 08:57:44,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:44,069 INFO L225 Difference]: With dead ends: 45 [2019-10-22 08:57:44,069 INFO L226 Difference]: Without dead ends: 45 [2019-10-22 08:57:44,069 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:57:44,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-22 08:57:44,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2019-10-22 08:57:44,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-22 08:57:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2019-10-22 08:57:44,076 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 17 [2019-10-22 08:57:44,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:44,077 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-10-22 08:57:44,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:57:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2019-10-22 08:57:44,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 08:57:44,079 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:44,079 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:44,080 INFO L410 AbstractCegarLoop]: === Iteration 6 === [sumOfThirdBytesErr0REQUIRES_VIOLATION, sumOfThirdBytesErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 08:57:44,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:44,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1868775408, now seen corresponding path program 1 times [2019-10-22 08:57:44,080 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:44,080 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548730786] [2019-10-22 08:57:44,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:44,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:44,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:44,157 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548730786] [2019-10-22 08:57:44,158 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:44,158 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:57:44,158 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273912019] [2019-10-22 08:57:44,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:57:44,158 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:44,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:57:44,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:57:44,159 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 7 states. [2019-10-22 08:57:44,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:44,275 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2019-10-22 08:57:44,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:57:44,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-10-22 08:57:44,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:44,276 INFO L225 Difference]: With dead ends: 37 [2019-10-22 08:57:44,276 INFO L226 Difference]: Without dead ends: 37 [2019-10-22 08:57:44,276 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:57:44,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-22 08:57:44,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2019-10-22 08:57:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 08:57:44,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2019-10-22 08:57:44,279 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 17 [2019-10-22 08:57:44,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:44,280 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2019-10-22 08:57:44,280 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:57:44,280 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2019-10-22 08:57:44,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 08:57:44,280 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:44,280 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:44,281 INFO L410 AbstractCegarLoop]: === Iteration 7 === [sumOfThirdBytesErr0REQUIRES_VIOLATION, sumOfThirdBytesErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 08:57:44,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:44,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1916776421, now seen corresponding path program 1 times [2019-10-22 08:57:44,281 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:44,281 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468019268] [2019-10-22 08:57:44,281 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:44,284 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:44,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:57:44,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468019268] [2019-10-22 08:57:44,353 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:44,353 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:57:44,353 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363176714] [2019-10-22 08:57:44,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:57:44,354 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:44,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:57:44,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:57:44,354 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 6 states. [2019-10-22 08:57:44,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:44,449 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2019-10-22 08:57:44,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:57:44,452 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-10-22 08:57:44,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:44,452 INFO L225 Difference]: With dead ends: 39 [2019-10-22 08:57:44,452 INFO L226 Difference]: Without dead ends: 36 [2019-10-22 08:57:44,453 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:57:44,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-22 08:57:44,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2019-10-22 08:57:44,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 08:57:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-10-22 08:57:44,456 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 21 [2019-10-22 08:57:44,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:44,456 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2019-10-22 08:57:44,456 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:57:44,456 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2019-10-22 08:57:44,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 08:57:44,457 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:44,457 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:44,457 INFO L410 AbstractCegarLoop]: === Iteration 8 === [sumOfThirdBytesErr0REQUIRES_VIOLATION, sumOfThirdBytesErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 08:57:44,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:44,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1965501396, now seen corresponding path program 1 times [2019-10-22 08:57:44,458 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:44,458 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628291982] [2019-10-22 08:57:44,458 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:44,459 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:44,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:44,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:57:44,563 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628291982] [2019-10-22 08:57:44,563 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756542967] [2019-10-22 08:57:44,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da025042-d5d4-499e-968f-ee49f54242ca/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 08:57:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:44,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:57:44,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:44,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:57:44,687 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:57:44,688 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2019-10-22 08:57:44,688 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872994633] [2019-10-22 08:57:44,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:57:44,688 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:44,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:57:44,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-22 08:57:44,689 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 6 states. [2019-10-22 08:57:44,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:44,744 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2019-10-22 08:57:44,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:57:44,745 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-10-22 08:57:44,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:44,745 INFO L225 Difference]: With dead ends: 47 [2019-10-22 08:57:44,745 INFO L226 Difference]: Without dead ends: 47 [2019-10-22 08:57:44,746 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2019-10-22 08:57:44,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-22 08:57:44,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2019-10-22 08:57:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-22 08:57:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2019-10-22 08:57:44,751 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 21 [2019-10-22 08:57:44,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:44,751 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2019-10-22 08:57:44,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:57:44,751 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2019-10-22 08:57:44,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 08:57:44,752 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:44,752 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:44,953 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:44,953 INFO L410 AbstractCegarLoop]: === Iteration 9 === [sumOfThirdBytesErr0REQUIRES_VIOLATION, sumOfThirdBytesErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 08:57:44,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:44,953 INFO L82 PathProgramCache]: Analyzing trace with hash 685637718, now seen corresponding path program 1 times [2019-10-22 08:57:44,953 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:44,954 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905887521] [2019-10-22 08:57:44,954 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:44,954 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:44,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:45,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:57:45,067 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905887521] [2019-10-22 08:57:45,067 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170361520] [2019-10-22 08:57:45,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da025042-d5d4-499e-968f-ee49f54242ca/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 08:57:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:45,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:57:45,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:45,239 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:57:45,239 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2019-10-22 08:57:45,239 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126494853] [2019-10-22 08:57:45,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-22 08:57:45,240 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:45,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-22 08:57:45,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-10-22 08:57:45,240 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 16 states. [2019-10-22 08:57:45,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:45,818 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2019-10-22 08:57:45,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-22 08:57:45,818 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2019-10-22 08:57:45,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:45,819 INFO L225 Difference]: With dead ends: 69 [2019-10-22 08:57:45,819 INFO L226 Difference]: Without dead ends: 69 [2019-10-22 08:57:45,820 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2019-10-22 08:57:45,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-10-22 08:57:45,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 46. [2019-10-22 08:57:45,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-22 08:57:45,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2019-10-22 08:57:45,824 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 21 [2019-10-22 08:57:45,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:45,825 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2019-10-22 08:57:45,825 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-22 08:57:45,825 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2019-10-22 08:57:45,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 08:57:45,826 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:45,826 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:46,026 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:46,027 INFO L410 AbstractCegarLoop]: === Iteration 10 === [sumOfThirdBytesErr0REQUIRES_VIOLATION, sumOfThirdBytesErr1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-10-22 08:57:46,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:46,027 INFO L82 PathProgramCache]: Analyzing trace with hash -262634968, now seen corresponding path program 1 times [2019-10-22 08:57:46,027 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:46,027 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943739842] [2019-10-22 08:57:46,027 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:46,028 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:46,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 08:57:46,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943739842] [2019-10-22 08:57:46,090 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:46,090 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:57:46,090 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395740552] [2019-10-22 08:57:46,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:57:46,091 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:46,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:57:46,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:46,091 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 5 states. [2019-10-22 08:57:46,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:46,122 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2019-10-22 08:57:46,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:57:46,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-22 08:57:46,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:46,123 INFO L225 Difference]: With dead ends: 45 [2019-10-22 08:57:46,123 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:57:46,123 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:46,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:57:46,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:57:46,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:57:46,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:57:46,124 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-10-22 08:57:46,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:46,124 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:46,124 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:57:46,124 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:57:46,124 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:57:46,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:57:46 BoogieIcfgContainer [2019-10-22 08:57:46,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:57:46,129 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:57:46,129 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:57:46,130 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:57:46,130 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:41" (3/4) ... [2019-10-22 08:57:46,134 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:57:46,140 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-10-22 08:57:46,140 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sumOfThirdBytes [2019-10-22 08:57:46,141 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-10-22 08:57:46,141 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-10-22 08:57:46,141 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-10-22 08:57:46,141 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-10-22 08:57:46,141 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-10-22 08:57:46,141 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-10-22 08:57:46,149 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-10-22 08:57:46,149 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-10-22 08:57:46,149 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 08:57:46,204 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_da025042-d5d4-499e-968f-ee49f54242ca/bin/uautomizer/witness.graphml [2019-10-22 08:57:46,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:57:46,206 INFO L168 Benchmark]: Toolchain (without parser) took 5412.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -188.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:46,206 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:46,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 532.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:46,207 INFO L168 Benchmark]: Boogie Preprocessor took 47.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:46,207 INFO L168 Benchmark]: RCFGBuilder took 464.51 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: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:46,207 INFO L168 Benchmark]: TraceAbstraction took 4287.25 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 59.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -81.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:46,208 INFO L168 Benchmark]: Witness Printer took 75.46 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: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:46,209 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 532.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 464.51 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: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4287.25 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 59.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -81.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 75.46 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: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 46 locations, 5 error locations. Result: SAFE, OverallTime: 4.2s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 208 SDtfs, 345 SDslu, 341 SDs, 0 SdLazy, 773 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=9, 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, 10 MinimizatonAttempts, 50 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 20005 SizeOfPredicates, 12 NumberOfNonLiveVariables, 322 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 19/25 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...