./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy_false-valid-memtrack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy_false-valid-memtrack.i -s /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/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 cf7af2f20e563d03f4a81a8dac054ded849cb34c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy_false-valid-memtrack.i -s /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/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 cf7af2f20e563d03f4a81a8dac054ded849cb34c .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 00:48:30,472 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 00:48:30,473 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 00:48:30,479 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 00:48:30,479 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 00:48:30,480 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 00:48:30,480 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 00:48:30,481 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 00:48:30,482 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 00:48:30,482 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 00:48:30,483 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 00:48:30,483 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 00:48:30,483 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 00:48:30,484 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 00:48:30,484 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 00:48:30,485 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 00:48:30,485 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 00:48:30,486 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 00:48:30,487 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 00:48:30,487 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 00:48:30,488 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 00:48:30,488 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 00:48:30,490 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 00:48:30,490 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 00:48:30,490 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 00:48:30,490 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 00:48:30,491 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 00:48:30,491 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 00:48:30,491 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 00:48:30,492 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 00:48:30,492 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 00:48:30,493 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 00:48:30,493 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 00:48:30,493 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 00:48:30,493 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 00:48:30,494 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 00:48:30,494 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-12-02 00:48:30,501 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 00:48:30,501 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 00:48:30,501 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 00:48:30,502 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 00:48:30,502 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 00:48:30,502 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 00:48:30,502 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 00:48:30,502 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 00:48:30,502 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 00:48:30,502 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 00:48:30,502 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 00:48:30,502 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 00:48:30,503 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 00:48:30,503 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-02 00:48:30,503 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-02 00:48:30,503 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-02 00:48:30,503 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 00:48:30,503 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 00:48:30,503 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 00:48:30,503 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 00:48:30,503 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 00:48:30,503 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 00:48:30,503 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 00:48:30,503 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 00:48:30,503 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 00:48:30,504 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 00:48:30,504 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 00:48:30,504 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 00:48:30,504 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/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 -> cf7af2f20e563d03f4a81a8dac054ded849cb34c [2018-12-02 00:48:30,522 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 00:48:30,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 00:48:30,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 00:48:30,535 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 00:48:30,535 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 00:48:30,536 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy_false-valid-memtrack.i [2018-12-02 00:48:30,572 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/data/724b5a56d/876e33e96fb64c0181983630cffb5f29/FLAGa6686833e [2018-12-02 00:48:31,004 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 00:48:31,005 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy_false-valid-memtrack.i [2018-12-02 00:48:31,011 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/data/724b5a56d/876e33e96fb64c0181983630cffb5f29/FLAGa6686833e [2018-12-02 00:48:31,019 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/data/724b5a56d/876e33e96fb64c0181983630cffb5f29 [2018-12-02 00:48:31,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 00:48:31,022 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-02 00:48:31,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 00:48:31,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 00:48:31,024 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 00:48:31,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:48:31" (1/1) ... [2018-12-02 00:48:31,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211e4e9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:31, skipping insertion in model container [2018-12-02 00:48:31,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:48:31" (1/1) ... [2018-12-02 00:48:31,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 00:48:31,048 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 00:48:31,188 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 00:48:31,193 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 00:48:31,248 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 00:48:31,267 INFO L195 MainTranslator]: Completed translation [2018-12-02 00:48:31,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:31 WrapperNode [2018-12-02 00:48:31,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 00:48:31,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 00:48:31,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 00:48:31,268 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 00:48:31,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:31" (1/1) ... [2018-12-02 00:48:31,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:31" (1/1) ... [2018-12-02 00:48:31,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:31" (1/1) ... [2018-12-02 00:48:31,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:31" (1/1) ... [2018-12-02 00:48:31,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:31" (1/1) ... [2018-12-02 00:48:31,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:31" (1/1) ... [2018-12-02 00:48:31,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:31" (1/1) ... [2018-12-02 00:48:31,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 00:48:31,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 00:48:31,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 00:48:31,294 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 00:48:31,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/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 [2018-12-02 00:48:31,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 00:48:31,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 00:48:31,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-12-02 00:48:31,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-12-02 00:48:31,324 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-02 00:48:31,324 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2018-12-02 00:48:31,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 00:48:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-12-02 00:48:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-12-02 00:48:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-02 00:48:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-02 00:48:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-02 00:48:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-02 00:48:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-02 00:48:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-02 00:48:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-02 00:48:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-02 00:48:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-02 00:48:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-02 00:48:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-02 00:48:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-02 00:48:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-02 00:48:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-02 00:48:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-02 00:48:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-02 00:48:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-02 00:48:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-02 00:48:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-02 00:48:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-02 00:48:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-02 00:48:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-02 00:48:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-02 00:48:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-02 00:48:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-02 00:48:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-02 00:48:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-02 00:48:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-02 00:48:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-02 00:48:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-02 00:48:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-02 00:48:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-02 00:48:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-02 00:48:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-02 00:48:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-02 00:48:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-02 00:48:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-02 00:48:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-02 00:48:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-02 00:48:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-02 00:48:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-02 00:48:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-02 00:48:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-02 00:48:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-02 00:48:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-02 00:48:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-02 00:48:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-02 00:48:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-02 00:48:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-02 00:48:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-02 00:48:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-02 00:48:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-02 00:48:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-02 00:48:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-02 00:48:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-02 00:48:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-02 00:48:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-02 00:48:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-02 00:48:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-12-02 00:48:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-02 00:48:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-02 00:48:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-12-02 00:48:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-02 00:48:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-02 00:48:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-12-02 00:48:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-02 00:48:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-02 00:48:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-02 00:48:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-02 00:48:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-02 00:48:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-02 00:48:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-02 00:48:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-02 00:48:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-02 00:48:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-02 00:48:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-02 00:48:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-02 00:48:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-02 00:48:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-02 00:48:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-02 00:48:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-02 00:48:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-02 00:48:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-02 00:48:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-02 00:48:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-02 00:48:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-02 00:48:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-02 00:48:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-02 00:48:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-02 00:48:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-02 00:48:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-02 00:48:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-02 00:48:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-02 00:48:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-02 00:48:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-02 00:48:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-02 00:48:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-02 00:48:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-02 00:48:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-02 00:48:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-02 00:48:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-02 00:48:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-02 00:48:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-02 00:48:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-02 00:48:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2018-12-02 00:48:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 00:48:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 00:48:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-02 00:48:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-02 00:48:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 00:48:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 00:48:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 00:48:31,538 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 00:48:31,538 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-02 00:48:31,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:48:31 BoogieIcfgContainer [2018-12-02 00:48:31,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 00:48:31,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 00:48:31,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 00:48:31,541 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 00:48:31,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:48:31" (1/3) ... [2018-12-02 00:48:31,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0a2432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:48:31, skipping insertion in model container [2018-12-02 00:48:31,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:31" (2/3) ... [2018-12-02 00:48:31,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0a2432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:48:31, skipping insertion in model container [2018-12-02 00:48:31,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:48:31" (3/3) ... [2018-12-02 00:48:31,543 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy_false-valid-memtrack.i [2018-12-02 00:48:31,549 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 00:48:31,554 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-12-02 00:48:31,563 INFO L257 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2018-12-02 00:48:31,578 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 00:48:31,578 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 00:48:31,578 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-02 00:48:31,579 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 00:48:31,579 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 00:48:31,579 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 00:48:31,579 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 00:48:31,579 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 00:48:31,579 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 00:48:31,587 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-12-02 00:48:31,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 00:48:31,593 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:48:31,593 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:48:31,594 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION]=== [2018-12-02 00:48:31,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:48:31,597 INFO L82 PathProgramCache]: Analyzing trace with hash -452904455, now seen corresponding path program 1 times [2018-12-02 00:48:31,598 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:48:31,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:48:31,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:48:31,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:48:31,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:48:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:48:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:48:31,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 00:48:31,756 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 00:48:31,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:48:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:48:31,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:48:31,806 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-02 00:48:31,808 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:31,810 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 00:48:31,810 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-02 00:48:31,839 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 00:48:31,840 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 00:48:31,841 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-12-02 00:48:31,841 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:31,848 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 00:48:31,849 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2018-12-02 00:48:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:48:31,878 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 00:48:31,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2018-12-02 00:48:31,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-02 00:48:31,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-02 00:48:31,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-12-02 00:48:31,890 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 10 states. [2018-12-02 00:48:32,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:48:32,058 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-12-02 00:48:32,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 00:48:32,059 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2018-12-02 00:48:32,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:48:32,064 INFO L225 Difference]: With dead ends: 35 [2018-12-02 00:48:32,064 INFO L226 Difference]: Without dead ends: 29 [2018-12-02 00:48:32,066 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-12-02 00:48:32,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-02 00:48:32,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-12-02 00:48:32,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-02 00:48:32,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-12-02 00:48:32,087 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2018-12-02 00:48:32,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:48:32,088 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-12-02 00:48:32,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-02 00:48:32,089 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-12-02 00:48:32,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 00:48:32,089 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:48:32,089 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:48:32,089 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION]=== [2018-12-02 00:48:32,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:48:32,090 INFO L82 PathProgramCache]: Analyzing trace with hash -452904454, now seen corresponding path program 1 times [2018-12-02 00:48:32,090 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:48:32,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:48:32,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:48:32,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:48:32,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:48:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:48:32,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:48:32,184 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 00:48:32,184 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 00:48:32,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:48:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:48:32,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:48:32,205 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-02 00:48:32,206 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:32,212 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-02 00:48:32,212 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:32,216 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 00:48:32,216 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-12-02 00:48:32,249 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 00:48:32,250 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 00:48:32,250 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-12-02 00:48:32,251 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:32,258 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-12-02 00:48:32,258 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:32,263 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 00:48:32,263 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:18 [2018-12-02 00:48:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:48:32,291 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 00:48:32,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2018-12-02 00:48:32,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 00:48:32,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 00:48:32,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-12-02 00:48:32,292 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 11 states. [2018-12-02 00:48:32,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:48:32,883 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-12-02 00:48:32,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-02 00:48:32,884 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-12-02 00:48:32,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:48:32,884 INFO L225 Difference]: With dead ends: 25 [2018-12-02 00:48:32,884 INFO L226 Difference]: Without dead ends: 25 [2018-12-02 00:48:32,885 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-12-02 00:48:32,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-12-02 00:48:32,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-12-02 00:48:32,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-02 00:48:32,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-12-02 00:48:32,887 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 19 [2018-12-02 00:48:32,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:48:32,887 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-12-02 00:48:32,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 00:48:32,887 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-12-02 00:48:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 00:48:32,888 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:48:32,888 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:48:32,888 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr3REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION]=== [2018-12-02 00:48:32,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:48:32,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1984347099, now seen corresponding path program 1 times [2018-12-02 00:48:32,888 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:48:32,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:48:32,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:48:32,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:48:32,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:48:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:48:32,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 00:48:32,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 00:48:32,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 00:48:32,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 00:48:32,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 00:48:32,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 00:48:32,923 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 7 states. [2018-12-02 00:48:32,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:48:32,976 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-12-02 00:48:32,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 00:48:32,976 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-12-02 00:48:32,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:48:32,977 INFO L225 Difference]: With dead ends: 24 [2018-12-02 00:48:32,977 INFO L226 Difference]: Without dead ends: 24 [2018-12-02 00:48:32,977 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-12-02 00:48:32,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-02 00:48:32,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-02 00:48:32,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-02 00:48:32,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-12-02 00:48:32,979 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-12-02 00:48:32,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:48:32,979 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-12-02 00:48:32,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 00:48:32,979 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-12-02 00:48:32,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 00:48:32,980 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:48:32,980 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:48:32,980 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr3REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION]=== [2018-12-02 00:48:32,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:48:32,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1984347098, now seen corresponding path program 1 times [2018-12-02 00:48:32,980 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:48:32,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:48:32,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:48:32,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:48:32,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:48:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:48:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 00:48:33,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 00:48:33,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 00:48:33,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 00:48:33,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 00:48:33,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 00:48:33,035 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 7 states. [2018-12-02 00:48:33,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:48:33,088 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-12-02 00:48:33,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 00:48:33,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-12-02 00:48:33,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:48:33,089 INFO L225 Difference]: With dead ends: 23 [2018-12-02 00:48:33,089 INFO L226 Difference]: Without dead ends: 23 [2018-12-02 00:48:33,090 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-12-02 00:48:33,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-02 00:48:33,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-12-02 00:48:33,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-02 00:48:33,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-12-02 00:48:33,091 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 22 [2018-12-02 00:48:33,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:48:33,092 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-12-02 00:48:33,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 00:48:33,092 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-12-02 00:48:33,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-02 00:48:33,092 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:48:33,092 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:48:33,092 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr3REQUIRES_VIOLATION, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION]=== [2018-12-02 00:48:33,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:48:33,093 INFO L82 PathProgramCache]: Analyzing trace with hash -357360832, now seen corresponding path program 1 times [2018-12-02 00:48:33,093 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:48:33,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:48:33,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:48:33,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:48:33,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:48:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 00:48:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 00:48:33,121 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 00:48:33,129 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-02 00:48:33,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:48:33 BoogieIcfgContainer [2018-12-02 00:48:33,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 00:48:33,142 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 00:48:33,143 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 00:48:33,143 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 00:48:33,143 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:48:31" (3/4) ... [2018-12-02 00:48:33,145 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 00:48:33,145 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 00:48:33,146 INFO L168 Benchmark]: Toolchain (without parser) took 2124.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 954.5 MB in the beginning and 1.1 GB in the end (delta: -131.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 00:48:33,146 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 00:48:33,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 954.5 MB in the beginning and 1.1 GB in the end (delta: -128.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. [2018-12-02 00:48:33,147 INFO L168 Benchmark]: Boogie Preprocessor took 25.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-02 00:48:33,147 INFO L168 Benchmark]: RCFGBuilder took 245.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 40.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 11.5 GB. [2018-12-02 00:48:33,147 INFO L168 Benchmark]: TraceAbstraction took 1603.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -46.8 MB). Peak memory consumption was 218.2 MB. Max. memory is 11.5 GB. [2018-12-02 00:48:33,148 INFO L168 Benchmark]: Witness Printer took 2.71 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 00:48:33,149 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 245.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 954.5 MB in the beginning and 1.1 GB in the end (delta: -128.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 245.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 40.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1603.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -46.8 MB). Peak memory consumption was 218.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.71 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L569] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); VAL [malloc(sizeof(struct node))={10:0}, temp={10:0}] [L563] COND FALSE !(((void *)0) == temp) VAL [malloc(sizeof(struct node))={10:0}, temp={10:0}] [L566] return temp; VAL [\result={10:0}, malloc(sizeof(struct node))={10:0}, temp={10:0}] [L569] RET, EXPR alloc_node() VAL [alloc_node()={10:0}] [L569] struct node* s = alloc_node(); [L570] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); VAL [malloc(sizeof(struct node))={7:0}, temp={7:0}] [L563] COND FALSE !(((void *)0) == temp) VAL [malloc(sizeof(struct node))={7:0}, temp={7:0}] [L566] return temp; VAL [\result={7:0}, malloc(sizeof(struct node))={7:0}, temp={7:0}] [L570] RET, EXPR alloc_node() VAL [alloc_node()={7:0}, s={10:0}] [L570] s->next = alloc_node() VAL [alloc_node()={7:0}, s={10:0}] [L571] EXPR s->next VAL [s={10:0}, s->next={7:0}] [L571] *s = *(s->next) [L572] free(s) VAL [s={10:0}] [L572] free(s) [L573] return 0; VAL [\result=0, s={10:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 47 locations, 11 error locations. UNSAFE Result, 1.5s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 55 SDslu, 199 SDs, 0 SdLazy, 409 SolverSat, 28 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 114 ConstructedInterpolants, 10 QuantifiedInterpolants, 14544 SizeOfPredicates, 8 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 14/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-02 00:48:34,447 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 00:48:34,448 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 00:48:34,454 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-12-02 00:48:34,458 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 00:48:34,458 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 00:48:34,459 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 00:48:34,459 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 00:48:34,460 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 00:48:34,460 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 00:48:34,461 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 00:48:34,462 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 00:48:34,463 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 00:48:34,463 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 00:48:34,464 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 00:48:34,465 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 00:48:34,465 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 00:48:34,465 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 00:48:34,465 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 00:48:34,466 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 00:48:34,466 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 00:48:34,467 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 00:48:34,467 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 00:48:34,467 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 00:48:34,468 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 00:48:34,468 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 00:48:34,468 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 00:48:34,468 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 00:48:34,469 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 00:48:34,469 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2018-12-02 00:48:34,476 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 00:48:34,476 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 00:48:34,477 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 00:48:34,477 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 00:48:34,477 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 00:48:34,477 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 00:48:34,477 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 00:48:34,478 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 00:48:34,478 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 00:48:34,478 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 00:48:34,478 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 00:48:34,478 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 00:48:34,478 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 00:48:34,478 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-02 00:48:34,478 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-02 00:48:34,478 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-02 00:48:34,478 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 00:48:34,478 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 00:48:34,478 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 00:48:34,478 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 00:48:34,479 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 00:48:34,479 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 00:48:34,479 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 00:48:34,479 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 00:48:34,479 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 00:48:34,479 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 00:48:34,479 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 00:48:34,479 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 00:48:34,479 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-02 00:48:34,479 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 00:48:34,479 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 00:48:34,480 INFO L133 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/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 -> cf7af2f20e563d03f4a81a8dac054ded849cb34c [2018-12-02 00:48:34,498 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 00:48:34,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 00:48:34,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 00:48:34,511 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 00:48:34,512 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 00:48:34,512 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy_false-valid-memtrack.i [2018-12-02 00:48:34,551 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/data/5b1a9dc9e/fc3c4c139b35447bb13ed1099405b603/FLAG6bdaead22 [2018-12-02 00:48:34,908 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 00:48:34,909 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy_false-valid-memtrack.i [2018-12-02 00:48:34,916 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/data/5b1a9dc9e/fc3c4c139b35447bb13ed1099405b603/FLAG6bdaead22 [2018-12-02 00:48:35,292 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/data/5b1a9dc9e/fc3c4c139b35447bb13ed1099405b603 [2018-12-02 00:48:35,294 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 00:48:35,295 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-02 00:48:35,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 00:48:35,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 00:48:35,300 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 00:48:35,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:48:35" (1/1) ... [2018-12-02 00:48:35,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc15be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:35, skipping insertion in model container [2018-12-02 00:48:35,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:48:35" (1/1) ... [2018-12-02 00:48:35,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 00:48:35,331 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 00:48:35,485 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 00:48:35,491 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 00:48:35,514 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 00:48:35,568 INFO L195 MainTranslator]: Completed translation [2018-12-02 00:48:35,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:35 WrapperNode [2018-12-02 00:48:35,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 00:48:35,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 00:48:35,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 00:48:35,569 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 00:48:35,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:35" (1/1) ... [2018-12-02 00:48:35,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:35" (1/1) ... [2018-12-02 00:48:35,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:35" (1/1) ... [2018-12-02 00:48:35,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:35" (1/1) ... [2018-12-02 00:48:35,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:35" (1/1) ... [2018-12-02 00:48:35,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:35" (1/1) ... [2018-12-02 00:48:35,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:35" (1/1) ... [2018-12-02 00:48:35,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 00:48:35,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 00:48:35,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 00:48:35,600 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 00:48:35,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/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 [2018-12-02 00:48:35,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 00:48:35,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 00:48:35,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-12-02 00:48:35,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-12-02 00:48:35,631 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-02 00:48:35,631 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2018-12-02 00:48:35,631 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 00:48:35,631 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-12-02 00:48:35,631 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-12-02 00:48:35,631 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-02 00:48:35,631 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-02 00:48:35,631 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-02 00:48:35,631 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-02 00:48:35,631 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-02 00:48:35,631 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-02 00:48:35,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-02 00:48:35,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-02 00:48:35,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-02 00:48:35,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-02 00:48:35,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-02 00:48:35,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-02 00:48:35,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-02 00:48:35,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-02 00:48:35,632 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-02 00:48:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-02 00:48:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-02 00:48:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-02 00:48:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-02 00:48:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-02 00:48:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-02 00:48:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-02 00:48:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-02 00:48:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-02 00:48:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-02 00:48:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-02 00:48:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-02 00:48:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-02 00:48:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-02 00:48:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-02 00:48:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-02 00:48:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-02 00:48:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-02 00:48:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-02 00:48:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-02 00:48:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-02 00:48:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-02 00:48:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-02 00:48:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-02 00:48:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-02 00:48:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-02 00:48:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-02 00:48:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-02 00:48:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-02 00:48:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-02 00:48:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-02 00:48:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-02 00:48:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-02 00:48:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-02 00:48:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-02 00:48:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-02 00:48:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-02 00:48:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-02 00:48:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-02 00:48:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-02 00:48:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-02 00:48:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-02 00:48:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-02 00:48:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-12-02 00:48:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-02 00:48:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-02 00:48:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-12-02 00:48:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-02 00:48:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-02 00:48:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-12-02 00:48:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-02 00:48:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-02 00:48:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-02 00:48:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-02 00:48:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-02 00:48:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-02 00:48:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-02 00:48:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-02 00:48:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-02 00:48:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-02 00:48:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-02 00:48:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-02 00:48:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-02 00:48:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-02 00:48:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-02 00:48:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-02 00:48:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-02 00:48:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-02 00:48:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-02 00:48:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-02 00:48:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-02 00:48:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-02 00:48:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-02 00:48:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-02 00:48:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-02 00:48:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-02 00:48:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-02 00:48:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-02 00:48:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-02 00:48:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-02 00:48:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-02 00:48:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-02 00:48:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-02 00:48:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-02 00:48:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-02 00:48:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-02 00:48:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-02 00:48:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-02 00:48:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-02 00:48:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2018-12-02 00:48:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 00:48:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 00:48:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-02 00:48:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-02 00:48:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 00:48:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 00:48:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 00:48:35,849 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 00:48:35,849 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-02 00:48:35,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:48:35 BoogieIcfgContainer [2018-12-02 00:48:35,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 00:48:35,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 00:48:35,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 00:48:35,853 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 00:48:35,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:48:35" (1/3) ... [2018-12-02 00:48:35,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1364079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:48:35, skipping insertion in model container [2018-12-02 00:48:35,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:48:35" (2/3) ... [2018-12-02 00:48:35,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1364079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:48:35, skipping insertion in model container [2018-12-02 00:48:35,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:48:35" (3/3) ... [2018-12-02 00:48:35,856 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy_false-valid-memtrack.i [2018-12-02 00:48:35,864 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 00:48:35,869 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-12-02 00:48:35,880 INFO L257 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2018-12-02 00:48:35,894 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 00:48:35,894 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 00:48:35,894 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-02 00:48:35,894 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 00:48:35,894 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 00:48:35,894 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 00:48:35,894 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 00:48:35,895 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 00:48:35,895 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 00:48:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-12-02 00:48:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 00:48:35,908 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:48:35,908 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:48:35,910 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-02 00:48:35,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:48:35,913 INFO L82 PathProgramCache]: Analyzing trace with hash -452904455, now seen corresponding path program 1 times [2018-12-02 00:48:35,915 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 00:48:35,915 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 00:48:35,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:48:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:48:35,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:48:36,004 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-02 00:48:36,005 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:36,011 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 00:48:36,012 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-02 00:48:36,430 WARN L854 $PredicateComparison]: unable to prove that (exists ((|alloc_node_#t~malloc2.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |alloc_node_#t~malloc2.base| (_ bv1 1)))) is different from true [2018-12-02 00:48:36,441 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 14 treesize of output 11 [2018-12-02 00:48:36,441 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:36,447 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 00:48:36,447 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2018-12-02 00:48:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2018-12-02 00:48:36,460 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 00:48:36,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:48:36,571 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 00:48:36,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2018-12-02 00:48:36,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 00:48:36,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 00:48:36,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=38, Unknown=6, NotChecked=12, Total=72 [2018-12-02 00:48:36,584 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 9 states. [2018-12-02 00:48:37,520 WARN L180 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 13 [2018-12-02 00:48:38,981 WARN L180 SmtUtils]: Spent 950.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 17 [2018-12-02 00:48:47,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:48:47,191 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-12-02 00:48:47,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 00:48:47,192 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-12-02 00:48:47,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:48:47,197 INFO L225 Difference]: With dead ends: 35 [2018-12-02 00:48:47,198 INFO L226 Difference]: Without dead ends: 29 [2018-12-02 00:48:47,199 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=40, Invalid=108, Unknown=12, NotChecked=22, Total=182 [2018-12-02 00:48:47,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-02 00:48:47,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-12-02 00:48:47,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-02 00:48:47,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-12-02 00:48:47,222 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2018-12-02 00:48:47,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:48:47,223 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-12-02 00:48:47,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 00:48:47,223 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-12-02 00:48:47,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 00:48:47,224 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:48:47,224 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:48:47,224 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-02 00:48:47,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:48:47,224 INFO L82 PathProgramCache]: Analyzing trace with hash -452904454, now seen corresponding path program 1 times [2018-12-02 00:48:47,224 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 00:48:47,225 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 00:48:47,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:48:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:48:47,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:48:47,273 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-02 00:48:47,273 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:47,285 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-02 00:48:47,285 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:47,292 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 00:48:47,292 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-12-02 00:48:47,972 WARN L854 $PredicateComparison]: unable to prove that (exists ((|alloc_node_#t~malloc2.base| (_ BitVec 32))) (and (= |c_#length| (store |c_old(#length)| |alloc_node_#t~malloc2.base| (_ bv4 32))) (= (select |c_old(#valid)| |alloc_node_#t~malloc2.base|) (_ bv0 1)))) is different from true [2018-12-02 00:48:47,982 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 00:48:47,983 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 00:48:47,984 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-12-02 00:48:47,985 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:47,999 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-12-02 00:48:48,000 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,008 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 00:48:48,008 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:18 [2018-12-02 00:48:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2018-12-02 00:48:48,031 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 00:48:48,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 00:48:48,176 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 00:48:48,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:48:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:48:48,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:48:48,199 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-02 00:48:48,200 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,207 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-02 00:48:48,207 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,212 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,212 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-12-02 00:48:48,231 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 00:48:48,233 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 00:48:48,234 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-12-02 00:48:48,234 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,248 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-12-02 00:48:48,249 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,257 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 00:48:48,257 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:18 [2018-12-02 00:48:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2018-12-02 00:48:48,259 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 00:48:48,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 00:48:48,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-12-02 00:48:48,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 00:48:48,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 00:48:48,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2018-12-02 00:48:48,347 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 9 states. [2018-12-02 00:48:48,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:48:48,596 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-12-02 00:48:48,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 00:48:48,596 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-12-02 00:48:48,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:48:48,597 INFO L225 Difference]: With dead ends: 25 [2018-12-02 00:48:48,597 INFO L226 Difference]: Without dead ends: 25 [2018-12-02 00:48:48,598 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=37, Invalid=122, Unknown=1, NotChecked=22, Total=182 [2018-12-02 00:48:48,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-12-02 00:48:48,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-12-02 00:48:48,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-02 00:48:48,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-12-02 00:48:48,600 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 19 [2018-12-02 00:48:48,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:48:48,601 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-12-02 00:48:48,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 00:48:48,601 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-12-02 00:48:48,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 00:48:48,601 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:48:48,601 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:48:48,602 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-02 00:48:48,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:48:48,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1984347099, now seen corresponding path program 1 times [2018-12-02 00:48:48,602 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 00:48:48,602 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 00:48:48,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:48:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:48:48,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:48:48,651 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-02 00:48:48,651 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,652 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,653 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-02 00:48:48,667 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-12-02 00:48:48,670 INFO L478 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 [2018-12-02 00:48:48,670 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,672 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,677 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,677 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:17, output treesize:11 [2018-12-02 00:48:48,687 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-12-02 00:48:48,689 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 15 treesize of output 7 [2018-12-02 00:48:48,689 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,691 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,695 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 00:48:48,695 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:13 [2018-12-02 00:48:48,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 00:48:48,717 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 00:48:48,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 00:48:48,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 00:48:48,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 00:48:48,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 00:48:48,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 00:48:48,719 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 7 states. [2018-12-02 00:48:48,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:48:48,825 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-12-02 00:48:48,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 00:48:48,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-12-02 00:48:48,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:48:48,826 INFO L225 Difference]: With dead ends: 24 [2018-12-02 00:48:48,826 INFO L226 Difference]: Without dead ends: 24 [2018-12-02 00:48:48,826 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-12-02 00:48:48,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-02 00:48:48,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-02 00:48:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-02 00:48:48,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-12-02 00:48:48,828 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-12-02 00:48:48,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:48:48,828 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-12-02 00:48:48,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 00:48:48,828 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-12-02 00:48:48,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 00:48:48,829 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:48:48,829 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:48:48,829 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-02 00:48:48,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:48:48,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1984347098, now seen corresponding path program 1 times [2018-12-02 00:48:48,829 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 00:48:48,829 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 00:48:48,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:48:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:48:48,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:48:48,877 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-02 00:48:48,878 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,881 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,881 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-02 00:48:48,909 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-12-02 00:48:48,912 INFO L478 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 [2018-12-02 00:48:48,912 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,915 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,926 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-12-02 00:48:48,928 INFO L478 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 [2018-12-02 00:48:48,928 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,930 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,937 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,937 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2018-12-02 00:48:48,952 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-12-02 00:48:48,954 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-12-02 00:48:48,954 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,956 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,966 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-12-02 00:48:48,969 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 13 treesize of output 5 [2018-12-02 00:48:48,969 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,972 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,975 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 00:48:48,976 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:31, output treesize:9 [2018-12-02 00:48:48,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 00:48:48,988 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 00:48:48,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 00:48:48,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 00:48:48,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 00:48:48,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 00:48:48,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 00:48:48,990 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 7 states. [2018-12-02 00:48:49,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:48:49,094 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-12-02 00:48:49,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 00:48:49,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-12-02 00:48:49,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:48:49,095 INFO L225 Difference]: With dead ends: 23 [2018-12-02 00:48:49,095 INFO L226 Difference]: Without dead ends: 23 [2018-12-02 00:48:49,095 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-12-02 00:48:49,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-02 00:48:49,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-12-02 00:48:49,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-02 00:48:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-12-02 00:48:49,097 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 22 [2018-12-02 00:48:49,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:48:49,097 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-12-02 00:48:49,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 00:48:49,097 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-12-02 00:48:49,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-02 00:48:49,098 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:48:49,098 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:48:49,098 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr10ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-02 00:48:49,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:48:49,098 INFO L82 PathProgramCache]: Analyzing trace with hash -357360832, now seen corresponding path program 1 times [2018-12-02 00:48:49,098 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 00:48:49,098 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecc0e5-db34-474a-bb4c-2445a95303ae/bin-2019/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 00:48:49,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:48:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 00:48:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 00:48:49,220 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 00:48:49,229 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-02 00:48:49,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:48:49 BoogieIcfgContainer [2018-12-02 00:48:49,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 00:48:49,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 00:48:49,238 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 00:48:49,238 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 00:48:49,238 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:48:35" (3/4) ... [2018-12-02 00:48:49,249 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 00:48:49,249 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 00:48:49,250 INFO L168 Benchmark]: Toolchain (without parser) took 13955.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 200.3 MB). Free memory was 938.0 MB in the beginning and 1.2 GB in the end (delta: -252.7 MB). Peak memory consumption was 272.2 MB. Max. memory is 11.5 GB. [2018-12-02 00:48:49,251 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 00:48:49,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -192.3 MB). Peak memory consumption was 37.7 MB. Max. memory is 11.5 GB. [2018-12-02 00:48:49,252 INFO L168 Benchmark]: Boogie Preprocessor took 30.46 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-12-02 00:48:49,252 INFO L168 Benchmark]: RCFGBuilder took 250.21 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: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. [2018-12-02 00:48:49,252 INFO L168 Benchmark]: TraceAbstraction took 13386.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 811.7 MB in the end (delta: 267.7 MB). Peak memory consumption was 267.7 MB. Max. memory is 11.5 GB. [2018-12-02 00:48:49,253 INFO L168 Benchmark]: Witness Printer took 11.86 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.0 MB). Free memory was 811.7 MB in the beginning and 1.2 GB in the end (delta: -379.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2018-12-02 00:48:49,255 INFO L336 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 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 272.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -192.3 MB). Peak memory consumption was 37.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.46 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 250.21 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: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 13386.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 811.7 MB in the end (delta: 267.7 MB). Peak memory consumption was 267.7 MB. Max. memory is 11.5 GB. * Witness Printer took 11.86 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.0 MB). Free memory was 811.7 MB in the beginning and 1.2 GB in the end (delta: -379.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L569] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); VAL [malloc(sizeof(struct node))={2147483647:0}, temp={2147483647:0}] [L563] COND FALSE !(((void *)0) == temp) VAL [malloc(sizeof(struct node))={2147483647:0}, temp={2147483647:0}] [L566] return temp; VAL [\result={2147483647:0}, malloc(sizeof(struct node))={2147483647:0}, temp={2147483647:0}] [L569] RET, EXPR alloc_node() VAL [alloc_node()={2147483647:0}] [L569] struct node* s = alloc_node(); [L570] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); VAL [malloc(sizeof(struct node))={-2147483648:0}, temp={-2147483648:0}] [L563] COND FALSE !(((void *)0) == temp) VAL [malloc(sizeof(struct node))={-2147483648:0}, temp={-2147483648:0}] [L566] return temp; VAL [\result={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, temp={-2147483648:0}] [L570] RET, EXPR alloc_node() VAL [alloc_node()={-2147483648:0}, s={2147483647:0}] [L570] s->next = alloc_node() VAL [alloc_node()={-2147483648:0}, s={2147483647:0}] [L571] EXPR s->next VAL [s={2147483647:0}, s->next={-2147483648:0}] [L571] *s = *(s->next) [L572] free(s) VAL [s={2147483647:0}] [L572] free(s) [L573] return 0; VAL [\result=0, s={2147483647:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 47 locations, 11 error locations. UNSAFE Result, 13.3s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 11.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 68 SDslu, 189 SDs, 0 SdLazy, 319 SolverSat, 26 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 8.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 88 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 114 ConstructedInterpolants, 19 QuantifiedInterpolants, 14400 SizeOfPredicates, 30 NumberOfNonLiveVariables, 336 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 14/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...