./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7_false-valid-memtrack_true-termination.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_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7_false-valid-memtrack_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 769eb05e4e9ecf306aff3e68f9d0c3446a53669d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7_false-valid-memtrack_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 769eb05e4e9ecf306aff3e68f9d0c3446a53669d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-03 05:14:41,836 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 05:14:41,837 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 05:14:41,843 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 05:14:41,844 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 05:14:41,844 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 05:14:41,845 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 05:14:41,845 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 05:14:41,846 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 05:14:41,847 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 05:14:41,847 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 05:14:41,847 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 05:14:41,848 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 05:14:41,848 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 05:14:41,848 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 05:14:41,849 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 05:14:41,849 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 05:14:41,850 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 05:14:41,851 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 05:14:41,852 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 05:14:41,852 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 05:14:41,853 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 05:14:41,854 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 05:14:41,854 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 05:14:41,854 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 05:14:41,855 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 05:14:41,855 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 05:14:41,855 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 05:14:41,856 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 05:14:41,856 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 05:14:41,856 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 05:14:41,857 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 05:14:41,857 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 05:14:41,857 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 05:14:41,857 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 05:14:41,858 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 05:14:41,858 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-03 05:14:41,865 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 05:14:41,865 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 05:14:41,866 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 05:14:41,866 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 05:14:41,866 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 05:14:41,866 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 05:14:41,866 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 05:14:41,866 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 05:14:41,866 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 05:14:41,866 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 05:14:41,866 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 05:14:41,866 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 05:14:41,866 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 05:14:41,867 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 05:14:41,867 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 05:14:41,867 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 05:14:41,867 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 05:14:41,867 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-03 05:14:41,867 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 05:14:41,867 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 05:14:41,867 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 05:14:41,868 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-03 05:14:41,868 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-03 05:14:41,868 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-03 05:14:41,868 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 05:14:41,868 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 05:14:41,868 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 05:14:41,868 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 05:14:41,868 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 05:14:41,868 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 05:14:41,868 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 05:14:41,868 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 05:14:41,869 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 05:14:41,869 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 05:14:41,869 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 05:14:41,869 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 05:14:41,869 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan 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 -> Taipan 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 -> 769eb05e4e9ecf306aff3e68f9d0c3446a53669d [2018-12-03 05:14:41,886 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 05:14:41,896 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 05:14:41,898 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 05:14:41,899 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 05:14:41,900 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 05:14:41,900 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7_false-valid-memtrack_true-termination.i [2018-12-03 05:14:41,939 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/data/23eb69f64/c881fde3499a49c993ecf909f5739d76/FLAG5335b3bc4 [2018-12-03 05:14:42,413 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 05:14:42,413 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/sv-benchmarks/c/ldv-memsafety/memleaks_test7_false-valid-memtrack_true-termination.i [2018-12-03 05:14:42,420 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/data/23eb69f64/c881fde3499a49c993ecf909f5739d76/FLAG5335b3bc4 [2018-12-03 05:14:42,428 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/data/23eb69f64/c881fde3499a49c993ecf909f5739d76 [2018-12-03 05:14:42,430 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 05:14:42,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 05:14:42,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 05:14:42,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 05:14:42,434 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 05:14:42,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:14:42" (1/1) ... [2018-12-03 05:14:42,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f5fc0d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:42, skipping insertion in model container [2018-12-03 05:14:42,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:14:42" (1/1) ... [2018-12-03 05:14:42,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 05:14:42,468 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 05:14:42,706 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 05:14:42,717 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 05:14:42,751 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 05:14:42,783 INFO L195 MainTranslator]: Completed translation [2018-12-03 05:14:42,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:42 WrapperNode [2018-12-03 05:14:42,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 05:14:42,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 05:14:42,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 05:14:42,784 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 05:14:42,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:42" (1/1) ... [2018-12-03 05:14:42,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:42" (1/1) ... [2018-12-03 05:14:42,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 05:14:42,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 05:14:42,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 05:14:42,806 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 05:14:42,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:42" (1/1) ... [2018-12-03 05:14:42,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:42" (1/1) ... [2018-12-03 05:14:42,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:42" (1/1) ... [2018-12-03 05:14:42,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:42" (1/1) ... [2018-12-03 05:14:42,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:42" (1/1) ... [2018-12-03 05:14:42,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:42" (1/1) ... [2018-12-03 05:14:42,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:42" (1/1) ... [2018-12-03 05:14:42,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 05:14:42,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 05:14:42,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 05:14:42,822 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 05:14:42,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/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 [2018-12-03 05:14:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 05:14:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-12-03 05:14:42,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-12-03 05:14:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 05:14:42,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 05:14:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 05:14:42,856 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 05:14:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-03 05:14:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2018-12-03 05:14:42,856 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2018-12-03 05:14:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2018-12-03 05:14:42,856 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2018-12-03 05:14:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_2_6 [2018-12-03 05:14:42,856 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_2_6 [2018-12-03 05:14:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 05:14:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-03 05:14:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2018-12-03 05:14:42,857 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2018-12-03 05:14:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 05:14:42,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 05:14:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure probe1_6 [2018-12-03 05:14:42,857 INFO L138 BoogieDeclarations]: Found implementation of procedure probe1_6 [2018-12-03 05:14:43,018 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 05:14:43,018 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-03 05:14:43,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:14:43 BoogieIcfgContainer [2018-12-03 05:14:43,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 05:14:43,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 05:14:43,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 05:14:43,021 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 05:14:43,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 05:14:42" (1/3) ... [2018-12-03 05:14:43,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbce1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:14:43, skipping insertion in model container [2018-12-03 05:14:43,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:42" (2/3) ... [2018-12-03 05:14:43,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbce1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:14:43, skipping insertion in model container [2018-12-03 05:14:43,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:14:43" (3/3) ... [2018-12-03 05:14:43,023 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test7_false-valid-memtrack_true-termination.i [2018-12-03 05:14:43,028 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 05:14:43,033 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-12-03 05:14:43,042 INFO L257 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2018-12-03 05:14:43,058 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 05:14:43,058 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-03 05:14:43,058 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 05:14:43,058 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 05:14:43,058 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 05:14:43,058 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 05:14:43,058 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 05:14:43,058 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 05:14:43,068 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2018-12-03 05:14:43,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-03 05:14:43,075 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:14:43,076 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, 1, 1] [2018-12-03 05:14:43,078 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:14:43,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:14:43,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1593489789, now seen corresponding path program 1 times [2018-12-03 05:14:43,083 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:14:43,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:43,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:14:43,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:43,116 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:14:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:14:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:14:43,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:14:43,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 05:14:43,222 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 05:14:43,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 05:14:43,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 05:14:43,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 05:14:43,234 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 5 states. [2018-12-03 05:14:43,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:14:43,265 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-12-03 05:14:43,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 05:14:43,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-12-03 05:14:43,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:14:43,271 INFO L225 Difference]: With dead ends: 51 [2018-12-03 05:14:43,271 INFO L226 Difference]: Without dead ends: 48 [2018-12-03 05:14:43,272 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 05:14:43,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-03 05:14:43,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-12-03 05:14:43,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-03 05:14:43,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2018-12-03 05:14:43,294 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 23 [2018-12-03 05:14:43,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:14:43,294 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2018-12-03 05:14:43,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 05:14:43,294 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2018-12-03 05:14:43,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-03 05:14:43,295 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:14:43,295 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, 1, 1, 1] [2018-12-03 05:14:43,295 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:14:43,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:14:43,295 INFO L82 PathProgramCache]: Analyzing trace with hash -2141424003, now seen corresponding path program 1 times [2018-12-03 05:14:43,295 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:14:43,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:43,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:14:43,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:43,296 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:14:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:14:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:14:43,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:14:43,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 05:14:43,334 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 05:14:43,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 05:14:43,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 05:14:43,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 05:14:43,335 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2018-12-03 05:14:43,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:14:43,392 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2018-12-03 05:14:43,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 05:14:43,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-12-03 05:14:43,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:14:43,394 INFO L225 Difference]: With dead ends: 66 [2018-12-03 05:14:43,394 INFO L226 Difference]: Without dead ends: 66 [2018-12-03 05:14:43,395 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 05:14:43,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-12-03 05:14:43,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2018-12-03 05:14:43,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-12-03 05:14:43,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-12-03 05:14:43,402 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 24 [2018-12-03 05:14:43,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:14:43,403 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-12-03 05:14:43,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 05:14:43,404 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-12-03 05:14:43,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-03 05:14:43,405 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:14:43,405 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, 1, 1, 1] [2018-12-03 05:14:43,405 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:14:43,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:14:43,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1860140286, now seen corresponding path program 1 times [2018-12-03 05:14:43,406 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:14:43,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:43,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:14:43,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:43,407 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:14:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:14:43,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:14:43,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:14:43,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 05:14:43,462 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 05:14:43,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 05:14:43,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 05:14:43,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 05:14:43,462 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 5 states. [2018-12-03 05:14:43,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:14:43,476 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2018-12-03 05:14:43,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 05:14:43,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-12-03 05:14:43,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:14:43,477 INFO L225 Difference]: With dead ends: 53 [2018-12-03 05:14:43,477 INFO L226 Difference]: Without dead ends: 53 [2018-12-03 05:14:43,477 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 05:14:43,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-03 05:14:43,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2018-12-03 05:14:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-12-03 05:14:43,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2018-12-03 05:14:43,482 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 24 [2018-12-03 05:14:43,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:14:43,482 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2018-12-03 05:14:43,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 05:14:43,482 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2018-12-03 05:14:43,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-03 05:14:43,483 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:14:43,483 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, 1, 1, 1] [2018-12-03 05:14:43,483 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:14:43,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:14:43,483 INFO L82 PathProgramCache]: Analyzing trace with hash -135655094, now seen corresponding path program 1 times [2018-12-03 05:14:43,484 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:14:43,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:43,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:14:43,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:43,485 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:14:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:14:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:14:43,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:14:43,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 05:14:43,523 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 05:14:43,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 05:14:43,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 05:14:43,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 05:14:43,524 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 5 states. [2018-12-03 05:14:43,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:14:43,537 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2018-12-03 05:14:43,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 05:14:43,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-12-03 05:14:43,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:14:43,538 INFO L225 Difference]: With dead ends: 53 [2018-12-03 05:14:43,538 INFO L226 Difference]: Without dead ends: 53 [2018-12-03 05:14:43,538 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 05:14:43,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-03 05:14:43,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2018-12-03 05:14:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-12-03 05:14:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2018-12-03 05:14:43,541 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 24 [2018-12-03 05:14:43,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:14:43,541 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2018-12-03 05:14:43,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 05:14:43,541 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2018-12-03 05:14:43,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-03 05:14:43,541 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:14:43,541 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, 1, 1, 1] [2018-12-03 05:14:43,542 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:14:43,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:14:43,542 INFO L82 PathProgramCache]: Analyzing trace with hash -429058101, now seen corresponding path program 1 times [2018-12-03 05:14:43,542 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:14:43,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:43,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:14:43,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:43,543 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:14:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:14:43,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:14:43,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:14:43,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 05:14:43,598 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 05:14:43,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 05:14:43,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 05:14:43,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 05:14:43,598 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 4 states. [2018-12-03 05:14:43,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:14:43,646 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2018-12-03 05:14:43,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 05:14:43,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-12-03 05:14:43,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:14:43,647 INFO L225 Difference]: With dead ends: 60 [2018-12-03 05:14:43,647 INFO L226 Difference]: Without dead ends: 47 [2018-12-03 05:14:43,648 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 05:14:43,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-12-03 05:14:43,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-12-03 05:14:43,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-12-03 05:14:43,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2018-12-03 05:14:43,652 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 24 [2018-12-03 05:14:43,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:14:43,652 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2018-12-03 05:14:43,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 05:14:43,652 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2018-12-03 05:14:43,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-03 05:14:43,653 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:14:43,653 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:14:43,653 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:14:43,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:14:43,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1291172173, now seen corresponding path program 1 times [2018-12-03 05:14:43,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:14:43,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:43,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:14:43,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:43,656 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:14:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:14:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:14:43,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:14:43,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-03 05:14:43,718 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 05:14:43,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 05:14:43,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 05:14:43,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-12-03 05:14:43,719 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 7 states. [2018-12-03 05:14:43,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:14:43,852 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2018-12-03 05:14:43,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-03 05:14:43,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-12-03 05:14:43,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:14:43,853 INFO L225 Difference]: With dead ends: 52 [2018-12-03 05:14:43,853 INFO L226 Difference]: Without dead ends: 52 [2018-12-03 05:14:43,854 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-12-03 05:14:43,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-12-03 05:14:43,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2018-12-03 05:14:43,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-03 05:14:43,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2018-12-03 05:14:43,856 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 29 [2018-12-03 05:14:43,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:14:43,857 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2018-12-03 05:14:43,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 05:14:43,857 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2018-12-03 05:14:43,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-03 05:14:43,857 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:14:43,857 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:14:43,857 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:14:43,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:14:43,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1291172172, now seen corresponding path program 1 times [2018-12-03 05:14:43,858 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:14:43,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:43,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:14:43,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:43,859 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:14:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:14:43,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:14:43,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:14:43,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-03 05:14:43,949 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 05:14:43,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-03 05:14:43,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-03 05:14:43,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-12-03 05:14:43,950 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 8 states. [2018-12-03 05:14:44,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:14:44,044 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2018-12-03 05:14:44,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-03 05:14:44,044 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2018-12-03 05:14:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:14:44,045 INFO L225 Difference]: With dead ends: 45 [2018-12-03 05:14:44,045 INFO L226 Difference]: Without dead ends: 45 [2018-12-03 05:14:44,045 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-12-03 05:14:44,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-03 05:14:44,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-12-03 05:14:44,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-03 05:14:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-12-03 05:14:44,048 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 29 [2018-12-03 05:14:44,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:14:44,048 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-12-03 05:14:44,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-03 05:14:44,048 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-12-03 05:14:44,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-03 05:14:44,048 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:14:44,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:14:44,049 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:14:44,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:14:44,049 INFO L82 PathProgramCache]: Analyzing trace with hash 319688976, now seen corresponding path program 1 times [2018-12-03 05:14:44,049 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:14:44,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:44,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:14:44,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:44,050 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:14:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:14:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:14:44,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:14:44,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-03 05:14:44,192 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 05:14:44,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-03 05:14:44,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-03 05:14:44,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-12-03 05:14:44,192 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 8 states. [2018-12-03 05:14:44,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:14:44,325 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2018-12-03 05:14:44,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-03 05:14:44,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-12-03 05:14:44,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:14:44,326 INFO L225 Difference]: With dead ends: 54 [2018-12-03 05:14:44,326 INFO L226 Difference]: Without dead ends: 43 [2018-12-03 05:14:44,327 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-12-03 05:14:44,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-03 05:14:44,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-03 05:14:44,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-03 05:14:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-12-03 05:14:44,329 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 32 [2018-12-03 05:14:44,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:14:44,329 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-12-03 05:14:44,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-03 05:14:44,329 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-12-03 05:14:44,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-03 05:14:44,330 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:14:44,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:14:44,330 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:14:44,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:14:44,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1593417128, now seen corresponding path program 1 times [2018-12-03 05:14:44,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:14:44,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:44,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:14:44,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:44,331 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:14:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:14:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:14:44,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:14:44,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 05:14:44,350 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 05:14:44,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 05:14:44,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 05:14:44,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 05:14:44,351 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 5 states. [2018-12-03 05:14:44,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:14:44,354 INFO L93 Difference]: Finished difference Result 43 states and 42 transitions. [2018-12-03 05:14:44,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 05:14:44,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2018-12-03 05:14:44,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:14:44,355 INFO L225 Difference]: With dead ends: 43 [2018-12-03 05:14:44,355 INFO L226 Difference]: Without dead ends: 43 [2018-12-03 05:14:44,355 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 05:14:44,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-03 05:14:44,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-03 05:14:44,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-03 05:14:44,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 42 transitions. [2018-12-03 05:14:44,357 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 42 transitions. Word has length 38 [2018-12-03 05:14:44,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:14:44,357 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 42 transitions. [2018-12-03 05:14:44,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 05:14:44,357 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 42 transitions. [2018-12-03 05:14:44,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-12-03 05:14:44,358 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:14:44,358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:14:44,358 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:14:44,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:14:44,358 INFO L82 PathProgramCache]: Analyzing trace with hash -75356203, now seen corresponding path program 1 times [2018-12-03 05:14:44,358 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:14:44,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:44,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:14:44,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:14:44,359 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:14:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 05:14:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 05:14:44,385 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 05:14:44,394 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-03 05:14:44,400 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 10 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2018-12-03 05:14:44,400 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2018-12-03 05:14:44,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 05:14:44 BoogieIcfgContainer [2018-12-03 05:14:44,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 05:14:44,406 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 05:14:44,406 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 05:14:44,406 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 05:14:44,407 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:14:43" (3/4) ... [2018-12-03 05:14:44,409 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-03 05:14:44,409 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 05:14:44,410 INFO L168 Benchmark]: Toolchain (without parser) took 1979.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -136.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:14:44,411 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:14:44,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -145.7 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. [2018-12-03 05:14:44,411 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.71 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:14:44,412 INFO L168 Benchmark]: Boogie Preprocessor took 15.80 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:14:44,412 INFO L168 Benchmark]: RCFGBuilder took 196.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2018-12-03 05:14:44,412 INFO L168 Benchmark]: TraceAbstraction took 1387.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -16.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:14:44,412 INFO L168 Benchmark]: Witness Printer took 3.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:14:44,414 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 352.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -145.7 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.71 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.80 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 196.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1387.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -16.4 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 3.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 10 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1473]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1473. Possible FailurePath: [L1135] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [\old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, ldv_global_msg_list={13:0}] [L1474] CALL entry_point() VAL [ldv_global_msg_list={13:0}] [L1466] struct A a7; VAL [a7={14:0}, ldv_global_msg_list={13:0}] [L1467] CALL, EXPR probe1_6(&a7) VAL [a={14:0}, ldv_global_msg_list={13:0}] [L1443] int ret = - -3; VAL [a={14:0}, a={14:0}, ldv_global_msg_list={13:0}, ret=3] [L1444] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, ldv_global_msg_list={13:0}] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] return malloc(size); VAL [\old(size)=4, \result={12:0}, ldv_global_msg_list={13:0}, malloc(size)={12:0}, size=4] [L1444] RET, EXPR ldv_malloc(sizeof(int)) VAL [a={14:0}, a={14:0}, ldv_global_msg_list={13:0}, ldv_malloc(sizeof(int))={12:0}, ret=3] [L1444] int *p = (int *)ldv_malloc(sizeof(int)); [L1445] COND FALSE !(p==0) VAL [a={14:0}, a={14:0}, ldv_global_msg_list={13:0}, p={12:0}, ret=3] [L1447] CALL, EXPR f6() VAL [ldv_global_msg_list={13:0}] [L1435] return __VERIFIER_nondet_int(); [L1447] RET, EXPR f6() VAL [a={14:0}, a={14:0}, f6()=0, ldv_global_msg_list={13:0}, p={12:0}, ret=3] [L1447] ret = f6() [L1448] COND FALSE !(ret<0) VAL [a={14:0}, a={14:0}, ldv_global_msg_list={13:0}, p={12:0}, ret=0] [L1450] CALL, EXPR g6() VAL [ldv_global_msg_list={13:0}] [L1439] return __VERIFIER_nondet_int(); [L1450] RET, EXPR g6() VAL [a={14:0}, a={14:0}, g6()=0, ldv_global_msg_list={13:0}, p={12:0}, ret=0] [L1450] ret = g6() [L1451] COND FALSE !(ret<0) VAL [a={14:0}, a={14:0}, ldv_global_msg_list={13:0}, p={12:0}, ret=0] [L1453] a->p = p VAL [a={14:0}, a={14:0}, ldv_global_msg_list={13:0}, p={12:0}, ret=0] [L1454] return 0; VAL [\result=0, a={14:0}, a={14:0}, ldv_global_msg_list={13:0}, p={12:0}, ret=0] [L1467] RET, EXPR probe1_6(&a7) VAL [a7={14:0}, ldv_global_msg_list={13:0}, probe1_6(&a7)=0] [L1467] int ret = probe1_6(&a7); [L1468] COND TRUE ret==0 VAL [a7={14:0}, ldv_global_msg_list={13:0}, ret=0] [L1469] FCALL disconnect_2_6(&a7) VAL [a7={14:0}, ldv_global_msg_list={13:0}, ret=0] [L1474] RET entry_point() VAL [ldv_global_msg_list={13:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 52 locations, 5 error locations. UNSAFE Result, 1.3s OverallTime, 10 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 407 SDtfs, 142 SDslu, 957 SDs, 0 SdLazy, 539 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=2, 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, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 289 NumberOfCodeBlocks, 289 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 238 ConstructedInterpolants, 0 QuantifiedInterpolants, 25041 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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 [2018-12-03 05:14:45,812 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 05:14:45,813 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 05:14:45,822 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 05:14:45,823 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 05:14:45,823 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 05:14:45,824 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 05:14:45,825 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 05:14:45,827 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 05:14:45,827 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 05:14:45,828 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 05:14:45,828 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 05:14:45,829 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 05:14:45,829 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 05:14:45,830 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 05:14:45,831 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 05:14:45,831 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 05:14:45,832 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 05:14:45,834 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 05:14:45,835 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 05:14:45,836 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 05:14:45,837 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 05:14:45,838 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 05:14:45,838 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 05:14:45,839 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 05:14:45,839 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 05:14:45,840 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 05:14:45,840 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 05:14:45,841 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 05:14:45,842 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 05:14:45,842 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 05:14:45,842 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 05:14:45,843 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 05:14:45,843 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 05:14:45,843 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 05:14:45,844 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 05:14:45,844 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2018-12-03 05:14:45,855 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 05:14:45,855 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 05:14:45,855 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 05:14:45,855 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 05:14:45,856 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 05:14:45,856 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 05:14:45,856 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 05:14:45,856 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 05:14:45,856 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 05:14:45,856 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 05:14:45,857 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 05:14:45,857 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 05:14:45,857 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 05:14:45,857 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 05:14:45,857 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-03 05:14:45,858 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 05:14:45,858 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 05:14:45,858 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 05:14:45,858 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-03 05:14:45,858 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-03 05:14:45,858 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-03 05:14:45,858 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 05:14:45,859 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-03 05:14:45,859 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-03 05:14:45,859 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 05:14:45,859 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-03 05:14:45,859 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 05:14:45,859 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 05:14:45,859 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 05:14:45,860 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 05:14:45,860 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 05:14:45,860 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 05:14:45,860 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 05:14:45,860 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-03 05:14:45,860 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 05:14:45,860 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-03 05:14:45,861 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_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan 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 -> Taipan 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 -> 769eb05e4e9ecf306aff3e68f9d0c3446a53669d [2018-12-03 05:14:45,883 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 05:14:45,890 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 05:14:45,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 05:14:45,893 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 05:14:45,893 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 05:14:45,894 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7_false-valid-memtrack_true-termination.i [2018-12-03 05:14:45,929 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/data/3260ea312/29ac4141f7b04becb7c4baa8f560bcb6/FLAG67534088a [2018-12-03 05:14:46,287 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 05:14:46,287 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/sv-benchmarks/c/ldv-memsafety/memleaks_test7_false-valid-memtrack_true-termination.i [2018-12-03 05:14:46,297 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/data/3260ea312/29ac4141f7b04becb7c4baa8f560bcb6/FLAG67534088a [2018-12-03 05:14:46,665 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/data/3260ea312/29ac4141f7b04becb7c4baa8f560bcb6 [2018-12-03 05:14:46,670 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 05:14:46,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 05:14:46,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 05:14:46,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 05:14:46,678 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 05:14:46,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:14:46" (1/1) ... [2018-12-03 05:14:46,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e5a7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:46, skipping insertion in model container [2018-12-03 05:14:46,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:14:46" (1/1) ... [2018-12-03 05:14:46,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 05:14:46,715 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 05:14:46,907 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 05:14:46,953 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 05:14:46,986 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 05:14:47,020 INFO L195 MainTranslator]: Completed translation [2018-12-03 05:14:47,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:47 WrapperNode [2018-12-03 05:14:47,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 05:14:47,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 05:14:47,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 05:14:47,021 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 05:14:47,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:47" (1/1) ... [2018-12-03 05:14:47,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:47" (1/1) ... [2018-12-03 05:14:47,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 05:14:47,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 05:14:47,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 05:14:47,042 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 05:14:47,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:47" (1/1) ... [2018-12-03 05:14:47,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:47" (1/1) ... [2018-12-03 05:14:47,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:47" (1/1) ... [2018-12-03 05:14:47,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:47" (1/1) ... [2018-12-03 05:14:47,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:47" (1/1) ... [2018-12-03 05:14:47,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:47" (1/1) ... [2018-12-03 05:14:47,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:47" (1/1) ... [2018-12-03 05:14:47,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 05:14:47,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 05:14:47,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 05:14:47,058 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 05:14:47,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/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 [2018-12-03 05:14:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 05:14:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-12-03 05:14:47,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-12-03 05:14:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 05:14:47,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 05:14:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 05:14:47,090 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 05:14:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-03 05:14:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2018-12-03 05:14:47,091 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2018-12-03 05:14:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2018-12-03 05:14:47,091 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2018-12-03 05:14:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_2_6 [2018-12-03 05:14:47,091 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_2_6 [2018-12-03 05:14:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 05:14:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-03 05:14:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2018-12-03 05:14:47,091 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2018-12-03 05:14:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 05:14:47,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 05:14:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure probe1_6 [2018-12-03 05:14:47,091 INFO L138 BoogieDeclarations]: Found implementation of procedure probe1_6 [2018-12-03 05:14:47,251 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 05:14:47,251 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-03 05:14:47,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:14:47 BoogieIcfgContainer [2018-12-03 05:14:47,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 05:14:47,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 05:14:47,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 05:14:47,254 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 05:14:47,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 05:14:46" (1/3) ... [2018-12-03 05:14:47,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6fe05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:14:47, skipping insertion in model container [2018-12-03 05:14:47,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:14:47" (2/3) ... [2018-12-03 05:14:47,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6fe05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:14:47, skipping insertion in model container [2018-12-03 05:14:47,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:14:47" (3/3) ... [2018-12-03 05:14:47,256 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test7_false-valid-memtrack_true-termination.i [2018-12-03 05:14:47,261 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 05:14:47,265 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-12-03 05:14:47,274 INFO L257 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2018-12-03 05:14:47,287 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-03 05:14:47,288 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 05:14:47,288 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-03 05:14:47,288 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 05:14:47,288 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 05:14:47,288 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 05:14:47,288 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 05:14:47,288 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 05:14:47,288 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 05:14:47,296 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2018-12-03 05:14:47,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-03 05:14:47,301 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:14:47,302 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, 1, 1] [2018-12-03 05:14:47,303 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:14:47,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:14:47,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1593489789, now seen corresponding path program 1 times [2018-12-03 05:14:47,309 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 05:14:47,309 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/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 [2018-12-03 05:14:47,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:14:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:14:47,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:14:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:14:47,414 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 05:14:47,417 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:14:47,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 05:14:47,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 05:14:47,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 05:14:47,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 05:14:47,429 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 5 states. [2018-12-03 05:14:47,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:14:47,480 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-12-03 05:14:47,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 05:14:47,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-12-03 05:14:47,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:14:47,490 INFO L225 Difference]: With dead ends: 51 [2018-12-03 05:14:47,491 INFO L226 Difference]: Without dead ends: 48 [2018-12-03 05:14:47,492 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 05:14:47,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-03 05:14:47,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-12-03 05:14:47,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-03 05:14:47,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2018-12-03 05:14:47,520 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 23 [2018-12-03 05:14:47,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:14:47,520 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2018-12-03 05:14:47,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 05:14:47,520 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2018-12-03 05:14:47,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-03 05:14:47,521 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:14:47,521 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, 1, 1, 1] [2018-12-03 05:14:47,521 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:14:47,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:14:47,521 INFO L82 PathProgramCache]: Analyzing trace with hash -2141424003, now seen corresponding path program 1 times [2018-12-03 05:14:47,522 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 05:14:47,522 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/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 [2018-12-03 05:14:47,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:14:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:14:47,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:14:47,596 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 [2018-12-03 05:14:47,597 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 05:14:47,599 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 05:14:47,599 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-03 05:14:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:14:47,635 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 05:14:47,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:14:47,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 05:14:47,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-03 05:14:47,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-03 05:14:47,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-03 05:14:47,638 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2018-12-03 05:14:47,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:14:47,809 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2018-12-03 05:14:47,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 05:14:47,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-12-03 05:14:47,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:14:47,812 INFO L225 Difference]: With dead ends: 75 [2018-12-03 05:14:47,813 INFO L226 Difference]: Without dead ends: 75 [2018-12-03 05:14:47,813 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-03 05:14:47,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-12-03 05:14:47,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 60. [2018-12-03 05:14:47,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-12-03 05:14:47,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-12-03 05:14:47,823 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 24 [2018-12-03 05:14:47,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:14:47,824 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-12-03 05:14:47,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-03 05:14:47,824 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-12-03 05:14:47,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-03 05:14:47,825 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:14:47,825 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, 1, 1, 1] [2018-12-03 05:14:47,826 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:14:47,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:14:47,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1860140286, now seen corresponding path program 1 times [2018-12-03 05:14:47,826 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 05:14:47,826 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/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 [2018-12-03 05:14:47,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:14:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:14:47,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:14:47,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:14:47,881 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 05:14:47,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:14:47,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-03 05:14:47,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-03 05:14:47,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-03 05:14:47,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-03 05:14:47,883 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 6 states. [2018-12-03 05:14:47,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:14:47,939 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2018-12-03 05:14:47,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 05:14:47,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-12-03 05:14:47,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:14:47,941 INFO L225 Difference]: With dead ends: 66 [2018-12-03 05:14:47,941 INFO L226 Difference]: Without dead ends: 65 [2018-12-03 05:14:47,941 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-03 05:14:47,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-12-03 05:14:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2018-12-03 05:14:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-12-03 05:14:47,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2018-12-03 05:14:47,945 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 24 [2018-12-03 05:14:47,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:14:47,945 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2018-12-03 05:14:47,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-03 05:14:47,945 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2018-12-03 05:14:47,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-03 05:14:47,946 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:14:47,946 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, 1, 1, 1] [2018-12-03 05:14:47,946 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:14:47,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:14:47,946 INFO L82 PathProgramCache]: Analyzing trace with hash -135655094, now seen corresponding path program 1 times [2018-12-03 05:14:47,946 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 05:14:47,947 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/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 [2018-12-03 05:14:47,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:14:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:14:47,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:14:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:14:47,999 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 05:14:48,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:14:48,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 05:14:48,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 05:14:48,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 05:14:48,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 05:14:48,001 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 5 states. [2018-12-03 05:14:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:14:48,036 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2018-12-03 05:14:48,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 05:14:48,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-12-03 05:14:48,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:14:48,038 INFO L225 Difference]: With dead ends: 63 [2018-12-03 05:14:48,038 INFO L226 Difference]: Without dead ends: 63 [2018-12-03 05:14:48,038 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 05:14:48,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-12-03 05:14:48,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2018-12-03 05:14:48,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-12-03 05:14:48,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2018-12-03 05:14:48,043 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 24 [2018-12-03 05:14:48,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:14:48,043 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2018-12-03 05:14:48,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 05:14:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2018-12-03 05:14:48,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-03 05:14:48,044 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:14:48,044 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, 1, 1, 1] [2018-12-03 05:14:48,044 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:14:48,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:14:48,045 INFO L82 PathProgramCache]: Analyzing trace with hash -429058101, now seen corresponding path program 1 times [2018-12-03 05:14:48,045 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 05:14:48,045 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/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 [2018-12-03 05:14:48,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:14:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:14:48,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:14:48,159 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2018-12-03 05:14:48,162 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 05:14:48,163 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2018-12-03 05:14:48,163 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 05:14:48,166 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 05:14:48,168 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2018-12-03 05:14:48,172 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 05:14:48,178 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 15 [2018-12-03 05:14:48,178 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-12-03 05:14:48,186 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-03 05:14:48,195 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-12-03 05:14:48,195 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:18, output treesize:19 [2018-12-03 05:14:48,843 WARN L854 $PredicateComparison]: unable to prove that (exists ((|v_entry_point_~#a7~0.base_8| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |v_entry_point_~#a7~0.base_8|)) (= |c_#valid| (store |c_old(#valid)| |v_entry_point_~#a7~0.base_8| (_ bv0 1))))) is different from true [2018-12-03 05:14:48,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:14:48,870 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 05:14:48,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:14:48,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-03 05:14:48,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-03 05:14:48,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-03 05:14:48,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=26, Unknown=1, NotChecked=10, Total=56 [2018-12-03 05:14:48,873 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 8 states. [2018-12-03 05:15:13,572 WARN L180 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-12-03 05:15:27,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:15:27,684 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2018-12-03 05:15:27,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-03 05:15:27,685 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2018-12-03 05:15:27,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:15:27,685 INFO L225 Difference]: With dead ends: 79 [2018-12-03 05:15:27,685 INFO L226 Difference]: Without dead ends: 69 [2018-12-03 05:15:27,686 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=23, Invalid=36, Unknown=1, NotChecked=12, Total=72 [2018-12-03 05:15:27,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-12-03 05:15:27,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 58. [2018-12-03 05:15:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-12-03 05:15:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2018-12-03 05:15:27,689 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 24 [2018-12-03 05:15:27,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:15:27,689 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2018-12-03 05:15:27,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-03 05:15:27,689 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2018-12-03 05:15:27,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-03 05:15:27,690 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:15:27,690 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:15:27,690 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:15:27,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:15:27,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1291172173, now seen corresponding path program 1 times [2018-12-03 05:15:27,691 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 05:15:27,691 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/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 [2018-12-03 05:15:27,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:15:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:15:27,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:15:27,772 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 [2018-12-03 05:15:27,772 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 05:15:27,774 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 05:15:27,774 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-03 05:15:29,798 WARN L854 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#t~malloc12.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |ldv_malloc_#t~malloc12.base|) (_ bv0 1)) (= (store |c_old(#valid)| |ldv_malloc_#t~malloc12.base| (_ bv1 1)) |c_#valid|))) is different from true [2018-12-03 05:15:29,805 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 05:15:29,806 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 05:15:29,807 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-12-03 05:15:29,807 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 05:15:29,815 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 05:15:29,815 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:16 [2018-12-03 05:15:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:15:29,918 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 05:15:29,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:15:29,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-03 05:15:29,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-03 05:15:29,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-03 05:15:29,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=42, Unknown=1, NotChecked=12, Total=72 [2018-12-03 05:15:29,920 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 9 states. [2018-12-03 05:15:30,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:15:30,157 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2018-12-03 05:15:30,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-03 05:15:30,158 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-12-03 05:15:30,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:15:30,158 INFO L225 Difference]: With dead ends: 73 [2018-12-03 05:15:30,158 INFO L226 Difference]: Without dead ends: 73 [2018-12-03 05:15:30,158 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=31, Invalid=82, Unknown=1, NotChecked=18, Total=132 [2018-12-03 05:15:30,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-12-03 05:15:30,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2018-12-03 05:15:30,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-12-03 05:15:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2018-12-03 05:15:30,162 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 29 [2018-12-03 05:15:30,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:15:30,162 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2018-12-03 05:15:30,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-03 05:15:30,162 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2018-12-03 05:15:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-03 05:15:30,162 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:15:30,162 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:15:30,163 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:15:30,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:15:30,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1291172172, now seen corresponding path program 1 times [2018-12-03 05:15:30,163 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 05:15:30,163 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/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 [2018-12-03 05:15:30,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:15:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:15:30,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:15:30,232 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 [2018-12-03 05:15:30,232 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 05:15:30,240 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 [2018-12-03 05:15:30,240 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 05:15:30,245 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 05:15:30,245 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-12-03 05:15:31,895 WARN L854 $PredicateComparison]: unable to prove that (exists ((ldv_malloc_~size (_ BitVec 32)) (|ldv_malloc_#t~malloc12.base| (_ BitVec 32))) (and (= |c_#length| (store |c_old(#length)| |ldv_malloc_#t~malloc12.base| ldv_malloc_~size)) (= (select |c_old(#valid)| |ldv_malloc_#t~malloc12.base|) (_ bv0 1)))) is different from true [2018-12-03 05:15:31,902 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 05:15:31,903 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 05:15:31,904 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-12-03 05:15:31,904 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 05:15:31,917 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-12-03 05:15:31,917 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 05:15:31,926 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 05:15:31,926 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:25, output treesize:9 [2018-12-03 05:15:31,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:15:31,984 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 05:15:31,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:15:31,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-03 05:15:31,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-03 05:15:31,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-03 05:15:31,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=39, Unknown=1, NotChecked=12, Total=72 [2018-12-03 05:15:31,987 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 9 states. [2018-12-03 05:15:32,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:15:32,176 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2018-12-03 05:15:32,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-03 05:15:32,176 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-12-03 05:15:32,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:15:32,177 INFO L225 Difference]: With dead ends: 64 [2018-12-03 05:15:32,177 INFO L226 Difference]: Without dead ends: 47 [2018-12-03 05:15:32,177 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=39, Invalid=74, Unknown=1, NotChecked=18, Total=132 [2018-12-03 05:15:32,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-12-03 05:15:32,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-12-03 05:15:32,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-03 05:15:32,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-12-03 05:15:32,179 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 29 [2018-12-03 05:15:32,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:15:32,179 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-12-03 05:15:32,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-03 05:15:32,179 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-12-03 05:15:32,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-03 05:15:32,179 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:15:32,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:15:32,180 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:15:32,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:15:32,180 INFO L82 PathProgramCache]: Analyzing trace with hash 319688976, now seen corresponding path program 1 times [2018-12-03 05:15:32,180 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 05:15:32,180 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 05:15:32,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:15:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:15:32,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:15:32,257 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2018-12-03 05:15:32,259 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 05:15:32,260 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2018-12-03 05:15:32,260 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 05:15:32,264 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 05:15:32,267 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2018-12-03 05:15:32,272 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 05:15:32,277 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 15 [2018-12-03 05:15:32,278 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-12-03 05:15:32,285 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-03 05:15:32,293 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-12-03 05:15:32,293 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:18, output treesize:19 [2018-12-03 05:15:32,360 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 05:15:32,360 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-12-03 05:15:32,361 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 05:15:32,362 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-03 05:15:32,362 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-12-03 05:15:33,272 WARN L854 $PredicateComparison]: unable to prove that (exists ((probe1_6_~p~0.base (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| probe1_6_~p~0.base)) (= |c_#valid| (store |c_old(#valid)| probe1_6_~p~0.base (_ bv0 1))))) is different from true [2018-12-03 05:15:37,307 WARN L180 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 16 [2018-12-03 05:15:39,312 WARN L854 $PredicateComparison]: unable to prove that (exists ((|v_entry_point_~#a7~0.base_9| (_ BitVec 32)) (probe1_6_~p~0.base (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| |v_entry_point_~#a7~0.base_9| (_ bv1 1)))) (and (= (select .cse0 probe1_6_~p~0.base) (_ bv0 1)) (= (store (store .cse0 probe1_6_~p~0.base (_ bv0 1)) |v_entry_point_~#a7~0.base_9| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_old(#valid)| |v_entry_point_~#a7~0.base_9|))))) is different from true [2018-12-03 05:15:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:15:39,345 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 05:15:39,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:15:39,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-12-03 05:15:39,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-03 05:15:39,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-03 05:15:39,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=81, Unknown=3, NotChecked=38, Total=156 [2018-12-03 05:15:39,347 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 13 states. [2018-12-03 05:15:53,162 WARN L180 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-12-03 05:16:00,334 WARN L180 SmtUtils]: Spent 2.80 s on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-12-03 05:16:05,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:16:05,605 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2018-12-03 05:16:05,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-03 05:16:05,606 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2018-12-03 05:16:05,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:16:05,606 INFO L225 Difference]: With dead ends: 57 [2018-12-03 05:16:05,606 INFO L226 Difference]: Without dead ends: 43 [2018-12-03 05:16:05,607 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=43, Invalid=117, Unknown=4, NotChecked=46, Total=210 [2018-12-03 05:16:05,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-03 05:16:05,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-03 05:16:05,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-03 05:16:05,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-12-03 05:16:05,608 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 32 [2018-12-03 05:16:05,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:16:05,608 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-12-03 05:16:05,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-03 05:16:05,609 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-12-03 05:16:05,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-03 05:16:05,609 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:16:05,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:16:05,609 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:16:05,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:16:05,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1593417128, now seen corresponding path program 1 times [2018-12-03 05:16:05,609 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 05:16:05,609 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 05:16:05,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:16:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:16:05,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 05:16:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:16:05,661 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 05:16:05,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:16:05,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 05:16:05,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 05:16:05,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 05:16:05,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 05:16:05,663 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 5 states. [2018-12-03 05:16:05,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:16:05,668 INFO L93 Difference]: Finished difference Result 43 states and 42 transitions. [2018-12-03 05:16:05,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 05:16:05,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2018-12-03 05:16:05,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:16:05,669 INFO L225 Difference]: With dead ends: 43 [2018-12-03 05:16:05,669 INFO L226 Difference]: Without dead ends: 43 [2018-12-03 05:16:05,669 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 05:16:05,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-03 05:16:05,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-03 05:16:05,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-03 05:16:05,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 42 transitions. [2018-12-03 05:16:05,671 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 42 transitions. Word has length 38 [2018-12-03 05:16:05,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:16:05,671 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 42 transitions. [2018-12-03 05:16:05,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 05:16:05,671 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 42 transitions. [2018-12-03 05:16:05,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-12-03 05:16:05,671 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:16:05,671 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:16:05,671 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, probe1_6Err1REQUIRES_VIOLATION, probe1_6Err0REQUIRES_VIOLATION, probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE, probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-03 05:16:05,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:16:05,672 INFO L82 PathProgramCache]: Analyzing trace with hash -75356203, now seen corresponding path program 1 times [2018-12-03 05:16:05,672 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 05:16:05,672 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b340bcda-9981-427f-8936-802c81672a68/bin-2019/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 05:16:05,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:16:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 05:16:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 05:16:05,831 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 05:16:05,843 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-03 05:16:05,850 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2018-12-03 05:16:05,851 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2018-12-03 05:16:05,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 05:16:05 BoogieIcfgContainer [2018-12-03 05:16:05,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 05:16:05,858 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 05:16:05,858 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 05:16:05,858 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 05:16:05,858 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:14:47" (3/4) ... [2018-12-03 05:16:05,860 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-03 05:16:05,860 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 05:16:05,861 INFO L168 Benchmark]: Toolchain (without parser) took 79190.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Free memory was 938.0 MB in the beginning and 1.0 GB in the end (delta: -103.2 MB). Peak memory consumption was 89.7 MB. Max. memory is 11.5 GB. [2018-12-03 05:16:05,861 INFO L168 Benchmark]: CDTParser took 0.14 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. [2018-12-03 05:16:05,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -154.0 MB). Peak memory consumption was 31.6 MB. Max. memory is 11.5 GB. [2018-12-03 05:16:05,861 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:16:05,862 INFO L168 Benchmark]: Boogie Preprocessor took 16.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:16:05,862 INFO L168 Benchmark]: RCFGBuilder took 193.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-12-03 05:16:05,862 INFO L168 Benchmark]: TraceAbstraction took 78605.37 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 26.1 MB). Peak memory consumption was 92.7 MB. Max. memory is 11.5 GB. [2018-12-03 05:16:05,862 INFO L168 Benchmark]: Witness Printer took 2.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:16:05,864 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 347.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -154.0 MB). Peak memory consumption was 31.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 193.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 78605.37 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 26.1 MB). Peak memory consumption was 92.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1473]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1473. Possible FailurePath: [L1135] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [\old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, ldv_global_msg_list={-2078209982:0}] [L1474] CALL entry_point() VAL [ldv_global_msg_list={-2078209982:0}] [L1466] struct A a7; VAL [a7={-1524020654:0}, ldv_global_msg_list={-2078209982:0}] [L1467] CALL, EXPR probe1_6(&a7) VAL [a={-1524020654:0}, ldv_global_msg_list={-2078209982:0}] [L1443] int ret = - -3; VAL [a={-1524020654:0}, a={-1524020654:0}, ldv_global_msg_list={-2078209982:0}, ret=3] [L1444] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, ldv_global_msg_list={-2078209982:0}] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] return malloc(size); VAL [\old(size)=4, \result={-450278830:0}, ldv_global_msg_list={-2078209982:0}, malloc(size)={-450278830:0}, size=4] [L1444] RET, EXPR ldv_malloc(sizeof(int)) VAL [a={-1524020654:0}, a={-1524020654:0}, ldv_global_msg_list={-2078209982:0}, ldv_malloc(sizeof(int))={-450278830:0}, ret=3] [L1444] int *p = (int *)ldv_malloc(sizeof(int)); [L1445] COND FALSE !(p==0) VAL [a={-1524020654:0}, a={-1524020654:0}, ldv_global_msg_list={-2078209982:0}, p={-450278830:0}, ret=3] [L1447] CALL, EXPR f6() VAL [ldv_global_msg_list={-2078209982:0}] [L1435] return __VERIFIER_nondet_int(); [L1447] RET, EXPR f6() VAL [a={-1524020654:0}, a={-1524020654:0}, f6()=0, ldv_global_msg_list={-2078209982:0}, p={-450278830:0}, ret=3] [L1447] ret = f6() [L1448] COND FALSE !(ret<0) VAL [a={-1524020654:0}, a={-1524020654:0}, ldv_global_msg_list={-2078209982:0}, p={-450278830:0}, ret=0] [L1450] CALL, EXPR g6() VAL [ldv_global_msg_list={-2078209982:0}] [L1439] return __VERIFIER_nondet_int(); [L1450] RET, EXPR g6() VAL [a={-1524020654:0}, a={-1524020654:0}, g6()=0, ldv_global_msg_list={-2078209982:0}, p={-450278830:0}, ret=0] [L1450] ret = g6() [L1451] COND FALSE !(ret<0) VAL [a={-1524020654:0}, a={-1524020654:0}, ldv_global_msg_list={-2078209982:0}, p={-450278830:0}, ret=0] [L1453] a->p = p VAL [a={-1524020654:0}, a={-1524020654:0}, ldv_global_msg_list={-2078209982:0}, p={-450278830:0}, ret=0] [L1454] return 0; VAL [\result=0, a={-1524020654:0}, a={-1524020654:0}, ldv_global_msg_list={-2078209982:0}, p={-450278830:0}, ret=0] [L1467] RET, EXPR probe1_6(&a7) VAL [a7={-1524020654:0}, ldv_global_msg_list={-2078209982:0}, probe1_6(&a7)=0] [L1467] int ret = probe1_6(&a7); [L1468] COND TRUE ret==0 VAL [a7={-1524020654:0}, ldv_global_msg_list={-2078209982:0}, ret=0] [L1469] FCALL disconnect_2_6(&a7) VAL [a7={-1524020654:0}, ldv_global_msg_list={-2078209982:0}, ret=0] [L1474] RET entry_point() VAL [ldv_global_msg_list={-2078209982:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 52 locations, 5 error locations. UNSAFE Result, 78.5s OverallTime, 10 OverallIterations, 1 TraceHistogramMax, 65.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 437 SDtfs, 353 SDslu, 1112 SDs, 0 SdLazy, 671 SolverSat, 112 SolverUnsat, 31 SolverUnknown, 0 SolverNotchecked, 55.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 248 GetRequests, 181 SyntacticMatches, 9 SemanticMatches, 58 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 21.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=6, 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, 9 MinimizatonAttempts, 52 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 289 NumberOfCodeBlocks, 289 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 238 ConstructedInterpolants, 50 QuantifiedInterpolants, 37158 SizeOfPredicates, 17 NumberOfNonLiveVariables, 937 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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...