./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/simple_true-unreach-call_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_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i -s /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/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 62ed6df4fdaf468f52c0eff1159abadc4f432e3d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i -s /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/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 62ed6df4fdaf468f52c0eff1159abadc4f432e3d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 05:31:19,507 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 05:31:19,509 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 05:31:19,516 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 05:31:19,516 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 05:31:19,517 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 05:31:19,517 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 05:31:19,518 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 05:31:19,519 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 05:31:19,519 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 05:31:19,520 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 05:31:19,520 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 05:31:19,520 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 05:31:19,521 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 05:31:19,521 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 05:31:19,521 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 05:31:19,522 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 05:31:19,523 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 05:31:19,524 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 05:31:19,525 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 05:31:19,525 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 05:31:19,526 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 05:31:19,527 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 05:31:19,527 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 05:31:19,527 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 05:31:19,528 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 05:31:19,528 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 05:31:19,529 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 05:31:19,529 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 05:31:19,529 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 05:31:19,530 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 05:31:19,530 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 05:31:19,530 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 05:31:19,530 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 05:31:19,531 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 05:31:19,531 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 05:31:19,531 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-12-02 05:31:19,541 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 05:31:19,541 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 05:31:19,542 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 05:31:19,542 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 05:31:19,542 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 05:31:19,542 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 05:31:19,542 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 05:31:19,543 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 05:31:19,543 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 05:31:19,543 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 05:31:19,543 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 05:31:19,543 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 05:31:19,543 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 05:31:19,544 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-02 05:31:19,544 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-02 05:31:19,544 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-02 05:31:19,544 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 05:31:19,544 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 05:31:19,544 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 05:31:19,545 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 05:31:19,545 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 05:31:19,545 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 05:31:19,545 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 05:31:19,545 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 05:31:19,545 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 05:31:19,546 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 05:31:19,546 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 05:31:19,546 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 05:31:19,546 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_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/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 -> 62ed6df4fdaf468f52c0eff1159abadc4f432e3d [2018-12-02 05:31:19,568 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 05:31:19,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 05:31:19,577 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 05:31:19,578 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 05:31:19,578 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 05:31:19,579 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-12-02 05:31:19,614 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/data/54a9ca0ff/7952b6fc421c46e38a58d1c243ece48e/FLAG4e93dc303 [2018-12-02 05:31:20,038 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 05:31:20,039 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-12-02 05:31:20,045 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/data/54a9ca0ff/7952b6fc421c46e38a58d1c243ece48e/FLAG4e93dc303 [2018-12-02 05:31:20,054 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/data/54a9ca0ff/7952b6fc421c46e38a58d1c243ece48e [2018-12-02 05:31:20,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 05:31:20,058 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-02 05:31:20,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 05:31:20,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 05:31:20,061 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 05:31:20,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:31:20" (1/1) ... [2018-12-02 05:31:20,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7300e139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:20, skipping insertion in model container [2018-12-02 05:31:20,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:31:20" (1/1) ... [2018-12-02 05:31:20,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 05:31:20,095 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 05:31:20,251 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:31:20,295 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 05:31:20,315 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:31:20,336 INFO L195 MainTranslator]: Completed translation [2018-12-02 05:31:20,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:20 WrapperNode [2018-12-02 05:31:20,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 05:31:20,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 05:31:20,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 05:31:20,336 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 05:31:20,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:20" (1/1) ... [2018-12-02 05:31:20,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:20" (1/1) ... [2018-12-02 05:31:20,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:20" (1/1) ... [2018-12-02 05:31:20,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:20" (1/1) ... [2018-12-02 05:31:20,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:20" (1/1) ... [2018-12-02 05:31:20,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:20" (1/1) ... [2018-12-02 05:31:20,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:20" (1/1) ... [2018-12-02 05:31:20,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 05:31:20,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 05:31:20,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 05:31:20,365 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 05:31:20,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/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 05:31:20,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 05:31:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 05:31:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-02 05:31:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 05:31:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-12-02 05:31:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-12-02 05:31:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-02 05:31:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-02 05:31:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-02 05:31:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-02 05:31:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-02 05:31:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-02 05:31:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-02 05:31:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-02 05:31:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-02 05:31:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-02 05:31:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-02 05:31:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-02 05:31:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-02 05:31:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-02 05:31:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-02 05:31:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-02 05:31:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-02 05:31:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-02 05:31:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-02 05:31:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-02 05:31:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-02 05:31:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-02 05:31:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-02 05:31:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-02 05:31:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-02 05:31:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-02 05:31:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-02 05:31:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-02 05:31:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-02 05:31:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-02 05:31:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-02 05:31:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-02 05:31:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-02 05:31:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-02 05:31:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-02 05:31:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-02 05:31:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-02 05:31:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-02 05:31:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-02 05:31:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-02 05:31:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-02 05:31:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-02 05:31:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-02 05:31:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-02 05:31:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-02 05:31:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-02 05:31:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-02 05:31:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-02 05:31:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-02 05:31:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-02 05:31:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-02 05:31:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-02 05:31:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-02 05:31:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-02 05:31:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-02 05:31:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-02 05:31:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-02 05:31:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-02 05:31:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-02 05:31:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-02 05:31:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-02 05:31:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-02 05:31:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-02 05:31:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-02 05:31:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-12-02 05:31:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-02 05:31:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-02 05:31:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-02 05:31:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-02 05:31:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-02 05:31:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-02 05:31:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-02 05:31:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-02 05:31:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-02 05:31:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-02 05:31:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-02 05:31:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-02 05:31:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-02 05:31:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-02 05:31:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-02 05:31:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-02 05:31:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-02 05:31:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-02 05:31:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-02 05:31:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-02 05:31:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-02 05:31:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-02 05:31:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-02 05:31:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-02 05:31:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-02 05:31:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-02 05:31:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-02 05:31:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-02 05:31:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-02 05:31:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-02 05:31:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-02 05:31:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-02 05:31:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-02 05:31:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-02 05:31:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-02 05:31:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-02 05:31:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-02 05:31:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 05:31:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 05:31:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 05:31:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-02 05:31:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-02 05:31:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 05:31:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 05:31:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 05:31:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 05:31:20,597 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 05:31:20,597 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 05:31:20,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:31:20 BoogieIcfgContainer [2018-12-02 05:31:20,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 05:31:20,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 05:31:20,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 05:31:20,599 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 05:31:20,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:31:20" (1/3) ... [2018-12-02 05:31:20,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6319531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:31:20, skipping insertion in model container [2018-12-02 05:31:20,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:20" (2/3) ... [2018-12-02 05:31:20,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6319531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:31:20, skipping insertion in model container [2018-12-02 05:31:20,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:31:20" (3/3) ... [2018-12-02 05:31:20,601 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call_false-valid-memtrack.i [2018-12-02 05:31:20,607 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 05:31:20,611 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-12-02 05:31:20,620 INFO L257 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2018-12-02 05:31:20,634 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 05:31:20,634 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 05:31:20,634 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-02 05:31:20,634 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 05:31:20,634 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 05:31:20,634 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 05:31:20,634 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 05:31:20,634 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 05:31:20,634 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 05:31:20,643 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-12-02 05:31:20,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 05:31:20,648 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:31:20,648 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:31:20,649 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION]=== [2018-12-02 05:31:20,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:31:20,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1635117424, now seen corresponding path program 1 times [2018-12-02 05:31:20,653 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:31:20,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:31:20,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:31:20,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:31:20,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:31:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:31:20,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:31:20,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:31:20,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 05:31:20,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 05:31:20,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 05:31:20,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 05:31:20,736 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-12-02 05:31:20,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:31:20,747 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2018-12-02 05:31:20,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 05:31:20,747 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-02 05:31:20,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:31:20,752 INFO L225 Difference]: With dead ends: 49 [2018-12-02 05:31:20,752 INFO L226 Difference]: Without dead ends: 41 [2018-12-02 05:31:20,753 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 05:31:20,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-02 05:31:20,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-02 05:31:20,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 05:31:20,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-12-02 05:31:20,773 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 10 [2018-12-02 05:31:20,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:31:20,773 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-12-02 05:31:20,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 05:31:20,773 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-12-02 05:31:20,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-02 05:31:20,773 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:31:20,773 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:31:20,774 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION]=== [2018-12-02 05:31:20,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:31:20,774 INFO L82 PathProgramCache]: Analyzing trace with hash -850992160, now seen corresponding path program 1 times [2018-12-02 05:31:20,774 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:31:20,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:31:20,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:31:20,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:31:20,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:31:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:31:20,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:31:20,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:31:20,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 05:31:20,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:31:20,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:31:20,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:31:20,818 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 4 states. [2018-12-02 05:31:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:31:20,891 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2018-12-02 05:31:20,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:31:20,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-02 05:31:20,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:31:20,891 INFO L225 Difference]: With dead ends: 49 [2018-12-02 05:31:20,892 INFO L226 Difference]: Without dead ends: 49 [2018-12-02 05:31:20,892 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 05:31:20,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-12-02 05:31:20,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2018-12-02 05:31:20,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-02 05:31:20,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2018-12-02 05:31:20,895 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 11 [2018-12-02 05:31:20,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:31:20,895 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2018-12-02 05:31:20,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:31:20,896 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2018-12-02 05:31:20,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-02 05:31:20,896 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:31:20,896 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:31:20,896 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION]=== [2018-12-02 05:31:20,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:31:20,896 INFO L82 PathProgramCache]: Analyzing trace with hash -850992159, now seen corresponding path program 1 times [2018-12-02 05:31:20,896 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:31:20,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:31:20,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:31:20,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:31:20,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:31:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:31:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:31:20,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:31:20,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 05:31:20,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:31:20,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:31:20,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:31:20,934 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 4 states. [2018-12-02 05:31:20,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:31:20,986 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-12-02 05:31:20,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:31:20,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-02 05:31:20,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:31:20,987 INFO L225 Difference]: With dead ends: 56 [2018-12-02 05:31:20,987 INFO L226 Difference]: Without dead ends: 56 [2018-12-02 05:31:20,987 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 05:31:20,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-12-02 05:31:20,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2018-12-02 05:31:20,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-12-02 05:31:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-12-02 05:31:20,990 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 11 [2018-12-02 05:31:20,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:31:20,990 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-12-02 05:31:20,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:31:20,990 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2018-12-02 05:31:20,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-02 05:31:20,990 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:31:20,990 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:31:20,990 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION]=== [2018-12-02 05:31:20,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:31:20,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1777420732, now seen corresponding path program 1 times [2018-12-02 05:31:20,991 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:31:20,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:31:20,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:31:20,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:31:20,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:31:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:31:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:31:21,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:31:21,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 05:31:21,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:31:21,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:31:21,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:31:21,012 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 4 states. [2018-12-02 05:31:21,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:31:21,042 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2018-12-02 05:31:21,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:31:21,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-12-02 05:31:21,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:31:21,042 INFO L225 Difference]: With dead ends: 53 [2018-12-02 05:31:21,042 INFO L226 Difference]: Without dead ends: 53 [2018-12-02 05:31:21,043 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 05:31:21,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-02 05:31:21,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2018-12-02 05:31:21,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-12-02 05:31:21,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2018-12-02 05:31:21,045 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 16 [2018-12-02 05:31:21,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:31:21,045 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2018-12-02 05:31:21,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:31:21,045 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2018-12-02 05:31:21,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 05:31:21,046 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:31:21,046 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:31:21,046 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION]=== [2018-12-02 05:31:21,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:31:21,046 INFO L82 PathProgramCache]: Analyzing trace with hash -38969261, now seen corresponding path program 1 times [2018-12-02 05:31:21,046 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:31:21,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:31:21,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:31:21,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:31:21,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:31:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:31:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:31:21,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:31:21,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 05:31:21,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 05:31:21,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 05:31:21,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-02 05:31:21,086 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 6 states. [2018-12-02 05:31:21,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:31:21,176 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2018-12-02 05:31:21,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 05:31:21,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-12-02 05:31:21,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:31:21,176 INFO L225 Difference]: With dead ends: 64 [2018-12-02 05:31:21,176 INFO L226 Difference]: Without dead ends: 64 [2018-12-02 05:31:21,177 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-12-02 05:31:21,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-12-02 05:31:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2018-12-02 05:31:21,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-02 05:31:21,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2018-12-02 05:31:21,180 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 19 [2018-12-02 05:31:21,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:31:21,180 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2018-12-02 05:31:21,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 05:31:21,180 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2018-12-02 05:31:21,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 05:31:21,180 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:31:21,180 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:31:21,180 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION]=== [2018-12-02 05:31:21,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:31:21,181 INFO L82 PathProgramCache]: Analyzing trace with hash -38969260, now seen corresponding path program 1 times [2018-12-02 05:31:21,181 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:31:21,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:31:21,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:31:21,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:31:21,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:31:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:31:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:31:21,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:31:21,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 05:31:21,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 05:31:21,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 05:31:21,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-02 05:31:21,231 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 6 states. [2018-12-02 05:31:21,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:31:21,351 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2018-12-02 05:31:21,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 05:31:21,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-12-02 05:31:21,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:31:21,352 INFO L225 Difference]: With dead ends: 60 [2018-12-02 05:31:21,352 INFO L226 Difference]: Without dead ends: 60 [2018-12-02 05:31:21,352 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-12-02 05:31:21,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-12-02 05:31:21,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 34. [2018-12-02 05:31:21,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-02 05:31:21,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-12-02 05:31:21,354 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 19 [2018-12-02 05:31:21,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:31:21,355 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-12-02 05:31:21,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 05:31:21,355 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-12-02 05:31:21,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-02 05:31:21,355 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:31:21,356 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:31:21,356 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION]=== [2018-12-02 05:31:21,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:31:21,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1662718154, now seen corresponding path program 1 times [2018-12-02 05:31:21,356 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:31:21,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:31:21,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:31:21,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:31:21,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:31:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:31:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:31:21,444 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:31:21,444 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/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 05:31:21,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:31:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:31:21,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:31:21,518 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 05:31:21,519 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 05:31:21,519 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:21,521 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:21,529 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 05:31:21,530 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 05:31:21,531 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:21,532 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:21,535 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:21,536 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2018-12-02 05:31:21,562 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 05:31:21,564 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 05:31:21,564 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:21,565 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:21,570 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 05:31:21,572 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 05:31:21,572 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:21,573 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:21,578 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 05:31:21,579 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-12-02 05:31:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:31:21,602 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:31:21,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 11 [2018-12-02 05:31:21,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 05:31:21,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 05:31:21,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-02 05:31:21,603 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 11 states. [2018-12-02 05:31:21,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:31:21,750 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2018-12-02 05:31:21,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 05:31:21,750 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-12-02 05:31:21,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:31:21,750 INFO L225 Difference]: With dead ends: 55 [2018-12-02 05:31:21,751 INFO L226 Difference]: Without dead ends: 55 [2018-12-02 05:31:21,751 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2018-12-02 05:31:21,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-12-02 05:31:21,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2018-12-02 05:31:21,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-02 05:31:21,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-12-02 05:31:21,753 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 20 [2018-12-02 05:31:21,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:31:21,753 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-12-02 05:31:21,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 05:31:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-12-02 05:31:21,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 05:31:21,753 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:31:21,753 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:31:21,753 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION]=== [2018-12-02 05:31:21,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:31:21,754 INFO L82 PathProgramCache]: Analyzing trace with hash 4653910, now seen corresponding path program 1 times [2018-12-02 05:31:21,754 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:31:21,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:31:21,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:31:21,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:31:21,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:31:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 05:31:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 05:31:21,786 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 05:31:21,797 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-02 05:31:21,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:31:21 BoogieIcfgContainer [2018-12-02 05:31:21,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 05:31:21,808 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 05:31:21,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 05:31:21,808 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 05:31:21,808 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:31:20" (3/4) ... [2018-12-02 05:31:21,811 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 05:31:21,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 05:31:21,812 INFO L168 Benchmark]: Toolchain (without parser) took 1755.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 949.6 MB in the beginning and 885.9 MB in the end (delta: 63.6 MB). Peak memory consumption was 231.9 MB. Max. memory is 11.5 GB. [2018-12-02 05:31:21,813 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:31:21,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 949.6 MB in the beginning and 1.2 GB in the end (delta: -203.9 MB). Peak memory consumption was 29.8 MB. Max. memory is 11.5 GB. [2018-12-02 05:31:21,814 INFO L168 Benchmark]: Boogie Preprocessor took 28.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:31:21,814 INFO L168 Benchmark]: RCFGBuilder took 232.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 11.5 GB. [2018-12-02 05:31:21,815 INFO L168 Benchmark]: TraceAbstraction took 1209.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 885.9 MB in the end (delta: 222.5 MB). Peak memory consumption was 222.5 MB. Max. memory is 11.5 GB. [2018-12-02 05:31:21,815 INFO L168 Benchmark]: Witness Printer took 3.97 ms. Allocated memory is still 1.2 GB. Free memory is still 885.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:31:21,817 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 277.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 949.6 MB in the beginning and 1.2 GB in the end (delta: -203.9 MB). Peak memory consumption was 29.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 232.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1209.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 885.9 MB in the end (delta: 222.5 MB). Peak memory consumption was 222.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.97 ms. Allocated memory is still 1.2 GB. Free memory is still 885.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] List a = (List) malloc(sizeof(struct node)); VAL [a={13:0}, malloc(sizeof(struct node))={13:0}] [L628] COND FALSE !(a == 0) VAL [a={13:0}, malloc(sizeof(struct node))={13:0}] [L629] List t; [L630] List p = a; VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}] [L631] COND FALSE !(__VERIFIER_nondet_int()) [L638] p->h = 1 VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}] [L639] p->n = 0 VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}] [L640] p = a VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}] [L641] COND TRUE p!=0 VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}] [L642] EXPR p->h VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}, p->h=1] [L642] COND FALSE !(p->h != 1) [L645] EXPR p->n VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}, p->n={0:0}] [L645] p = p->n [L641] COND FALSE !(p!=0) VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={0:0}] [L647] return 0; VAL [\result=0, a={13:0}, malloc(sizeof(struct node))={13:0}, p={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 15 error locations. UNSAFE Result, 1.1s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 200 SDtfs, 385 SDslu, 278 SDs, 0 SdLazy, 442 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=3, 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, 7 MinimizatonAttempts, 67 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 10638 SizeOfPredicates, 11 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 6/8 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 05:31:23,113 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 05:31:23,114 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 05:31:23,120 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 05:31:23,120 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 05:31:23,121 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 05:31:23,121 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 05:31:23,122 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 05:31:23,124 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 05:31:23,124 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 05:31:23,125 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 05:31:23,125 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 05:31:23,126 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 05:31:23,126 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 05:31:23,127 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 05:31:23,127 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 05:31:23,128 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 05:31:23,129 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 05:31:23,130 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 05:31:23,131 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 05:31:23,131 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 05:31:23,132 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 05:31:23,133 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 05:31:23,134 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 05:31:23,134 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 05:31:23,134 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 05:31:23,135 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 05:31:23,135 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 05:31:23,136 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 05:31:23,137 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 05:31:23,137 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 05:31:23,137 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 05:31:23,137 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 05:31:23,138 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 05:31:23,138 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 05:31:23,138 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 05:31:23,139 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2018-12-02 05:31:23,148 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 05:31:23,148 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 05:31:23,149 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 05:31:23,149 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 05:31:23,149 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 05:31:23,149 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 05:31:23,149 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 05:31:23,150 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 05:31:23,150 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 05:31:23,150 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 05:31:23,150 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 05:31:23,150 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 05:31:23,150 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 05:31:23,150 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-02 05:31:23,151 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-02 05:31:23,151 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-02 05:31:23,151 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 05:31:23,151 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 05:31:23,151 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 05:31:23,151 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 05:31:23,151 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 05:31:23,152 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 05:31:23,152 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 05:31:23,152 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 05:31:23,152 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 05:31:23,152 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 05:31:23,152 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 05:31:23,152 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 05:31:23,152 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-02 05:31:23,153 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 05:31:23,153 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 05:31:23,153 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_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/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 -> 62ed6df4fdaf468f52c0eff1159abadc4f432e3d [2018-12-02 05:31:23,176 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 05:31:23,183 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 05:31:23,185 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 05:31:23,186 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 05:31:23,187 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 05:31:23,187 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-12-02 05:31:23,222 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/data/bb05f3dbc/cb9c44078ba44bc88a934df49decd3d8/FLAG818c8ab14 [2018-12-02 05:31:23,661 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 05:31:23,661 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-12-02 05:31:23,669 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/data/bb05f3dbc/cb9c44078ba44bc88a934df49decd3d8/FLAG818c8ab14 [2018-12-02 05:31:23,678 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/data/bb05f3dbc/cb9c44078ba44bc88a934df49decd3d8 [2018-12-02 05:31:23,679 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 05:31:23,680 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-02 05:31:23,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 05:31:23,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 05:31:23,684 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 05:31:23,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:31:23" (1/1) ... [2018-12-02 05:31:23,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5554d819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:23, skipping insertion in model container [2018-12-02 05:31:23,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:31:23" (1/1) ... [2018-12-02 05:31:23,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 05:31:23,708 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 05:31:23,855 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:31:23,864 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 05:31:23,887 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:31:23,943 INFO L195 MainTranslator]: Completed translation [2018-12-02 05:31:23,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:23 WrapperNode [2018-12-02 05:31:23,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 05:31:23,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 05:31:23,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 05:31:23,944 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 05:31:23,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:23" (1/1) ... [2018-12-02 05:31:23,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:23" (1/1) ... [2018-12-02 05:31:23,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:23" (1/1) ... [2018-12-02 05:31:23,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:23" (1/1) ... [2018-12-02 05:31:23,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:23" (1/1) ... [2018-12-02 05:31:23,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:23" (1/1) ... [2018-12-02 05:31:23,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:23" (1/1) ... [2018-12-02 05:31:23,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 05:31:23,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 05:31:23,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 05:31:23,976 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 05:31:23,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/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 05:31:24,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 05:31:24,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 05:31:24,007 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-02 05:31:24,007 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 05:31:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-12-02 05:31:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-12-02 05:31:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-02 05:31:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-02 05:31:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-02 05:31:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-02 05:31:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-02 05:31:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-02 05:31:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-02 05:31:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-02 05:31:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-02 05:31:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-02 05:31:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-02 05:31:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-02 05:31:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-02 05:31:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-02 05:31:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-02 05:31:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-02 05:31:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-02 05:31:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-02 05:31:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-02 05:31:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-02 05:31:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-02 05:31:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-02 05:31:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-02 05:31:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-02 05:31:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-02 05:31:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-02 05:31:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-02 05:31:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-02 05:31:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-02 05:31:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-02 05:31:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-02 05:31:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-02 05:31:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-02 05:31:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-02 05:31:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-02 05:31:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-02 05:31:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-02 05:31:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-02 05:31:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-02 05:31:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-02 05:31:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-02 05:31:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-02 05:31:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-02 05:31:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-02 05:31:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-02 05:31:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-02 05:31:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-02 05:31:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-02 05:31:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-02 05:31:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-02 05:31:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-02 05:31:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-02 05:31:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-02 05:31:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-02 05:31:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-02 05:31:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-02 05:31:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-02 05:31:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-02 05:31:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-02 05:31:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-02 05:31:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-02 05:31:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-02 05:31:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-02 05:31:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-02 05:31:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-12-02 05:31:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-02 05:31:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-02 05:31:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-02 05:31:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-02 05:31:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-02 05:31:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-02 05:31:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-02 05:31:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-02 05:31:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-02 05:31:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-02 05:31:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-02 05:31:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-02 05:31:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-02 05:31:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-02 05:31:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-02 05:31:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-02 05:31:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-02 05:31:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-02 05:31:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-02 05:31:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-02 05:31:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-02 05:31:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-02 05:31:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-02 05:31:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-02 05:31:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-02 05:31:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-02 05:31:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-02 05:31:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-02 05:31:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-02 05:31:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-02 05:31:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-02 05:31:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-02 05:31:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-02 05:31:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-02 05:31:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-02 05:31:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-02 05:31:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-02 05:31:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 05:31:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 05:31:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-02 05:31:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-02 05:31:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-02 05:31:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-02 05:31:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 05:31:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 05:31:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 05:31:24,264 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 05:31:24,264 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 05:31:24,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:31:24 BoogieIcfgContainer [2018-12-02 05:31:24,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 05:31:24,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 05:31:24,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 05:31:24,267 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 05:31:24,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:31:23" (1/3) ... [2018-12-02 05:31:24,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e26d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:31:24, skipping insertion in model container [2018-12-02 05:31:24,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:23" (2/3) ... [2018-12-02 05:31:24,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e26d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:31:24, skipping insertion in model container [2018-12-02 05:31:24,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:31:24" (3/3) ... [2018-12-02 05:31:24,269 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call_false-valid-memtrack.i [2018-12-02 05:31:24,277 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 05:31:24,281 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-12-02 05:31:24,290 INFO L257 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2018-12-02 05:31:24,304 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 05:31:24,305 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 05:31:24,305 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-02 05:31:24,305 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 05:31:24,305 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 05:31:24,305 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 05:31:24,305 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 05:31:24,305 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 05:31:24,305 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 05:31:24,313 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-12-02 05:31:24,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 05:31:24,318 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:31:24,318 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:31:24,320 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION]=== [2018-12-02 05:31:24,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:31:24,323 INFO L82 PathProgramCache]: Analyzing trace with hash 915497384, now seen corresponding path program 1 times [2018-12-02 05:31:24,325 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:31:24,326 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/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 05:31:24,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:31:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:31:24,381 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:31:24,417 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 05:31:24,419 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:24,427 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:24,427 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-02 05:31:24,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:31:24,444 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:31:24,447 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:31:24,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 05:31:24,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:31:24,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:31:24,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:31:24,458 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 4 states. [2018-12-02 05:31:24,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:31:24,663 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2018-12-02 05:31:24,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:31:24,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-12-02 05:31:24,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:31:24,670 INFO L225 Difference]: With dead ends: 76 [2018-12-02 05:31:24,670 INFO L226 Difference]: Without dead ends: 65 [2018-12-02 05:31:24,671 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 05:31:24,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-12-02 05:31:24,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2018-12-02 05:31:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-12-02 05:31:24,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2018-12-02 05:31:24,694 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 10 [2018-12-02 05:31:24,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:31:24,695 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2018-12-02 05:31:24,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:31:24,695 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2018-12-02 05:31:24,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 05:31:24,695 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:31:24,695 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:31:24,696 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION]=== [2018-12-02 05:31:24,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:31:24,696 INFO L82 PathProgramCache]: Analyzing trace with hash 915497383, now seen corresponding path program 1 times [2018-12-02 05:31:24,696 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:31:24,696 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/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 05:31:24,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:31:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:31:24,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:31:24,733 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 05:31:24,733 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:24,738 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:24,739 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-02 05:31:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:31:24,755 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:31:24,756 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:31:24,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 05:31:24,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:31:24,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:31:24,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:31:24,758 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 4 states. [2018-12-02 05:31:24,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:31:24,855 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-12-02 05:31:24,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:31:24,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-12-02 05:31:24,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:31:24,857 INFO L225 Difference]: With dead ends: 51 [2018-12-02 05:31:24,857 INFO L226 Difference]: Without dead ends: 51 [2018-12-02 05:31:24,857 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 05:31:24,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-12-02 05:31:24,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-12-02 05:31:24,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-02 05:31:24,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2018-12-02 05:31:24,863 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 10 [2018-12-02 05:31:24,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:31:24,863 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2018-12-02 05:31:24,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:31:24,863 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2018-12-02 05:31:24,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-02 05:31:24,864 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:31:24,864 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:31:24,864 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION]=== [2018-12-02 05:31:24,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:31:24,864 INFO L82 PathProgramCache]: Analyzing trace with hash -533544812, now seen corresponding path program 1 times [2018-12-02 05:31:24,865 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:31:24,865 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 05:31:24,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:31:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:31:24,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:31:24,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:31:24,905 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:31:24,906 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:31:24,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 05:31:24,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:31:24,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:31:24,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:31:24,907 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 4 states. [2018-12-02 05:31:25,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:31:25,008 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-12-02 05:31:25,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:31:25,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-12-02 05:31:25,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:31:25,010 INFO L225 Difference]: With dead ends: 51 [2018-12-02 05:31:25,010 INFO L226 Difference]: Without dead ends: 51 [2018-12-02 05:31:25,010 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 05:31:25,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-12-02 05:31:25,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-12-02 05:31:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-02 05:31:25,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2018-12-02 05:31:25,014 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 15 [2018-12-02 05:31:25,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:31:25,014 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2018-12-02 05:31:25,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:31:25,015 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2018-12-02 05:31:25,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 05:31:25,015 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:31:25,015 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:31:25,015 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION]=== [2018-12-02 05:31:25,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:31:25,016 INFO L82 PathProgramCache]: Analyzing trace with hash -895242068, now seen corresponding path program 1 times [2018-12-02 05:31:25,016 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:31:25,016 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/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 05:31:25,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:31:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:31:25,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:31:25,068 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 05:31:25,068 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:25,072 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:25,072 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-02 05:31:25,092 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 13 treesize of output 10 [2018-12-02 05:31:25,095 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 10 treesize of output 9 [2018-12-02 05:31:25,096 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:25,099 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:25,115 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 13 treesize of output 10 [2018-12-02 05:31:25,118 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 10 treesize of output 9 [2018-12-02 05:31:25,118 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:25,121 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:25,131 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 05:31:25,131 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2018-12-02 05:31:25,147 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 05:31:25,150 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 3 [2018-12-02 05:31:25,150 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:25,153 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:25,165 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 23 treesize of output 19 [2018-12-02 05:31:25,168 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 19 treesize of output 7 [2018-12-02 05:31:25,168 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:25,170 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:25,174 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 05:31:25,174 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:41, output treesize:11 [2018-12-02 05:31:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:31:25,196 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:31:25,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:31:25,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 05:31:25,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 05:31:25,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 05:31:25,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-02 05:31:25,198 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 6 states. [2018-12-02 05:31:25,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:31:25,567 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2018-12-02 05:31:25,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 05:31:25,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-12-02 05:31:25,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:31:25,568 INFO L225 Difference]: With dead ends: 60 [2018-12-02 05:31:25,568 INFO L226 Difference]: Without dead ends: 60 [2018-12-02 05:31:25,568 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-12-02 05:31:25,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-12-02 05:31:25,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2018-12-02 05:31:25,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-02 05:31:25,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2018-12-02 05:31:25,570 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 17 [2018-12-02 05:31:25,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:31:25,571 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2018-12-02 05:31:25,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 05:31:25,571 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2018-12-02 05:31:25,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 05:31:25,571 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:31:25,571 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:31:25,571 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION]=== [2018-12-02 05:31:25,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:31:25,572 INFO L82 PathProgramCache]: Analyzing trace with hash -895242069, now seen corresponding path program 1 times [2018-12-02 05:31:25,572 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:31:25,572 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/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 05:31:25,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:31:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:31:25,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:31:25,619 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 12 treesize of output 11 [2018-12-02 05:31:25,620 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:25,623 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:25,623 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-12-02 05:31:25,636 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 13 treesize of output 10 [2018-12-02 05:31:25,644 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 10 treesize of output 9 [2018-12-02 05:31:25,644 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:25,647 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:25,655 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 05:31:25,655 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:17 [2018-12-02 05:31:25,669 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 21 treesize of output 17 [2018-12-02 05:31:25,672 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 17 treesize of output 5 [2018-12-02 05:31:25,672 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:25,674 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:25,677 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 05:31:25,677 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:26, output treesize:11 [2018-12-02 05:31:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:31:25,689 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:31:25,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:31:25,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 05:31:25,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 05:31:25,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 05:31:25,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 05:31:25,690 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 6 states. [2018-12-02 05:31:25,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:31:25,905 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-12-02 05:31:25,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 05:31:25,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-12-02 05:31:25,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:31:25,907 INFO L225 Difference]: With dead ends: 39 [2018-12-02 05:31:25,907 INFO L226 Difference]: Without dead ends: 39 [2018-12-02 05:31:25,907 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-12-02 05:31:25,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-02 05:31:25,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2018-12-02 05:31:25,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-02 05:31:25,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-12-02 05:31:25,909 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 17 [2018-12-02 05:31:25,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:31:25,909 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-12-02 05:31:25,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 05:31:25,910 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-12-02 05:31:25,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 05:31:25,910 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:31:25,910 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:31:25,910 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION]=== [2018-12-02 05:31:25,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:31:25,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1536484195, now seen corresponding path program 1 times [2018-12-02 05:31:25,911 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:31:25,911 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/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 05:31:25,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:31:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:31:25,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:31:25,988 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 13 treesize of output 10 [2018-12-02 05:31:25,991 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 10 treesize of output 9 [2018-12-02 05:31:25,991 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:25,993 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:26,006 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 13 treesize of output 10 [2018-12-02 05:31:26,008 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 10 treesize of output 9 [2018-12-02 05:31:26,008 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:26,009 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:26,016 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:26,016 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2018-12-02 05:31:26,043 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 05:31:26,045 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 05:31:26,045 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:26,047 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:26,052 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 05:31:26,054 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 05:31:26,054 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:26,055 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:26,057 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 05:31:26,057 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-12-02 05:31:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:31:26,082 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 05:31:26,170 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 13 treesize of output 11 [2018-12-02 05:31:26,172 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2018-12-02 05:31:26,173 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:26,174 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:26,176 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-12-02 05:31:26,178 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2018-12-02 05:31:26,178 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 05:31:26,180 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 05:31:26,193 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 05:31:26,193 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:39, output treesize:7 [2018-12-02 05:31:26,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:31:26,212 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:31:26,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2018-12-02 05:31:26,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 05:31:26,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 05:31:26,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-12-02 05:31:26,213 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2018-12-02 05:31:26,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:31:26,545 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-12-02 05:31:26,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 05:31:26,546 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-12-02 05:31:26,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:31:26,547 INFO L225 Difference]: With dead ends: 53 [2018-12-02 05:31:26,547 INFO L226 Difference]: Without dead ends: 53 [2018-12-02 05:31:26,547 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2018-12-02 05:31:26,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-02 05:31:26,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2018-12-02 05:31:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-02 05:31:26,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-12-02 05:31:26,549 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 19 [2018-12-02 05:31:26,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:31:26,550 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-12-02 05:31:26,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 05:31:26,550 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-12-02 05:31:26,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-02 05:31:26,550 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:31:26,550 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:31:26,550 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION]=== [2018-12-02 05:31:26,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:31:26,551 INFO L82 PathProgramCache]: Analyzing trace with hash 386368445, now seen corresponding path program 1 times [2018-12-02 05:31:26,551 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:31:26,551 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a0ca6a0-c372-4325-be83-a7eeed3d5a31/bin-2019/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 05:31:26,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:31:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 05:31:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 05:31:26,667 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 05:31:26,675 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-02 05:31:26,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:31:26 BoogieIcfgContainer [2018-12-02 05:31:26,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 05:31:26,684 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 05:31:26,684 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 05:31:26,684 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 05:31:26,684 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:31:24" (3/4) ... [2018-12-02 05:31:26,687 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 05:31:26,687 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 05:31:26,687 INFO L168 Benchmark]: Toolchain (without parser) took 3007.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 203.4 MB). Free memory was 938.0 MB in the beginning and 1.2 GB in the end (delta: -253.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:31:26,688 INFO L168 Benchmark]: CDTParser took 0.12 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 05:31:26,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -187.1 MB). Peak memory consumption was 43.3 MB. Max. memory is 11.5 GB. [2018-12-02 05:31:26,689 INFO L168 Benchmark]: Boogie Preprocessor took 31.62 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-02 05:31:26,689 INFO L168 Benchmark]: RCFGBuilder took 288.66 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: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 11.5 GB. [2018-12-02 05:31:26,689 INFO L168 Benchmark]: TraceAbstraction took 2418.57 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -120.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:31:26,690 INFO L168 Benchmark]: Witness Printer took 2.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:31:26,691 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 263.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -187.1 MB). Peak memory consumption was 43.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.62 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 288.66 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: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2418.57 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -120.1 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 2.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 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: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] List a = (List) malloc(sizeof(struct node)); VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}] [L628] COND FALSE !(a == 0) VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}] [L629] List t; [L630] List p = a; VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L631] COND FALSE !(__VERIFIER_nondet_int()) [L638] p->h = 1 VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L639] p->n = 0 VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L640] p = a VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L641] COND TRUE p!=0 VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L642] EXPR p->h VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->h=1] [L642] COND FALSE !(p->h != 1) [L645] EXPR p->n VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->n={0:0}] [L645] p = p->n [L641] COND FALSE !(p!=0) VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={0:0}] [L647] return 0; VAL [\result=0, a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 50 locations, 15 error locations. UNSAFE Result, 2.3s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 143 SDtfs, 310 SDslu, 282 SDs, 0 SdLazy, 458 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=1, 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, 6 MinimizatonAttempts, 57 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 8900 SizeOfPredicates, 35 NumberOfNonLiveVariables, 335 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 4/6 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...