./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0158-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0158-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE --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 71b5f65f2f8d87850f90a0c5b95ff806d4054a596ed67d86f7cc490935279607 ..................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0158-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE --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 71b5f65f2f8d87850f90a0c5b95ff806d4054a596ed67d86f7cc490935279607 ........................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:33:14,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:33:14,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:33:14,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:33:14,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:33:14,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:33:14,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:33:14,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:33:14,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:33:14,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:33:14,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:33:14,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:33:14,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:33:14,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:33:14,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:33:14,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:33:14,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:33:14,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:33:14,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:33:14,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:33:14,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:33:14,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:33:14,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:33:14,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:33:14,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:33:14,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:33:14,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:33:14,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:33:14,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:33:14,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:33:14,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:33:14,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:33:14,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:33:14,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:33:14,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:33:14,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:33:14,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:33:14,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:33:14,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:33:14,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:33:14,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:33:14,828 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-24 10:33:14,853 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:33:14,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:33:14,854 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:33:14,855 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:33:14,855 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:33:14,855 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:33:14,855 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:33:14,856 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:33:14,856 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:33:14,856 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:33:14,856 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:33:14,857 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:33:14,860 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:33:14,860 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:33:14,860 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:33:14,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:33:14,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:33:14,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:33:14,862 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:33:14,862 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:33:14,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:33:14,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:33:14,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:33:14,864 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:33:14,864 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:33:14,864 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:33:14,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:33:14,866 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:33:14,867 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:33:14,867 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:33:14,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:33:14,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:33:14,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:33:14,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:33:14,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:33:14,869 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:33:14,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:33:14,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:33:14,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:33:14,871 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71b5f65f2f8d87850f90a0c5b95ff806d4054a596ed67d86f7cc490935279607 [2021-10-24 10:33:15,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:33:15,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:33:15,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:33:15,193 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:33:15,194 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:33:15,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/memsafety/test-0158-2.i [2021-10-24 10:33:15,296 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/data/e6674fa75/25db12d739184895a61db4b737226779/FLAGab1aa3705 [2021-10-24 10:33:15,856 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:33:15,856 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/sv-benchmarks/c/memsafety/test-0158-2.i [2021-10-24 10:33:15,869 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/data/e6674fa75/25db12d739184895a61db4b737226779/FLAGab1aa3705 [2021-10-24 10:33:16,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/data/e6674fa75/25db12d739184895a61db4b737226779 [2021-10-24 10:33:16,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:33:16,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:33:16,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:33:16,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:33:16,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:33:16,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:33:16" (1/1) ... [2021-10-24 10:33:16,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f4af03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:16, skipping insertion in model container [2021-10-24 10:33:16,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:33:16" (1/1) ... [2021-10-24 10:33:16,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:33:16,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:33:16,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:33:16,534 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:33:16,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:33:16,604 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:33:16,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:16 WrapperNode [2021-10-24 10:33:16,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:33:16,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:33:16,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:33:16,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:33:16,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:16" (1/1) ... [2021-10-24 10:33:16,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:16" (1/1) ... [2021-10-24 10:33:16,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:33:16,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:33:16,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:33:16,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:33:16,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:16" (1/1) ... [2021-10-24 10:33:16,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:16" (1/1) ... [2021-10-24 10:33:16,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:16" (1/1) ... [2021-10-24 10:33:16,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:16" (1/1) ... [2021-10-24 10:33:16,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:16" (1/1) ... [2021-10-24 10:33:16,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:16" (1/1) ... [2021-10-24 10:33:16,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:16" (1/1) ... [2021-10-24 10:33:16,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:33:16,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:33:16,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:33:16,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:33:16,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:16" (1/1) ... [2021-10-24 10:33:16,680 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:33:16,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:33:16,716 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:33:16,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:33:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 10:33:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 10:33:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-24 10:33:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:33:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:33:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:33:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:33:16,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:33:17,013 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:33:17,013 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-24 10:33:17,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:33:17 BoogieIcfgContainer [2021-10-24 10:33:17,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:33:17,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:33:17,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:33:17,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:33:17,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:33:16" (1/3) ... [2021-10-24 10:33:17,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6796ddb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:33:17, skipping insertion in model container [2021-10-24 10:33:17,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:16" (2/3) ... [2021-10-24 10:33:17,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6796ddb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:33:17, skipping insertion in model container [2021-10-24 10:33:17,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:33:17" (3/3) ... [2021-10-24 10:33:17,024 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-2.i [2021-10-24 10:33:17,029 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:33:17,029 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-24 10:33:17,117 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:33:17,130 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:33:17,131 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-24 10:33:17,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 5 states have (on average 2.4) internal successors, (12), 12 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:17,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-24 10:33:17,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:33:17,161 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-24 10:33:17,162 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-24 10:33:17,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:33:17,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1554, now seen corresponding path program 1 times [2021-10-24 10:33:17,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:33:17,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030898240] [2021-10-24 10:33:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:33:17,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:33:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:33:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:17,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:33:17,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030898240] [2021-10-24 10:33:17,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030898240] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:33:17,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:33:17,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-24 10:33:17,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694802585] [2021-10-24 10:33:17,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:33:17,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:33:17,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:33:17,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:33:17,392 INFO L87 Difference]: Start difference. First operand has 13 states, 5 states have (on average 2.4) internal successors, (12), 12 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:33:17,426 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2021-10-24 10:33:17,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:33:17,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-24 10:33:17,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:33:17,436 INFO L225 Difference]: With dead ends: 10 [2021-10-24 10:33:17,436 INFO L226 Difference]: Without dead ends: 9 [2021-10-24 10:33:17,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:33:17,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-24 10:33:17,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-24 10:33:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 5 states have (on average 1.6) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:17,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-24 10:33:17,466 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 2 [2021-10-24 10:33:17,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:33:17,466 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-24 10:33:17,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:17,467 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-24 10:33:17,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-24 10:33:17,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:33:17,468 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-24 10:33:17,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:33:17,468 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-24 10:33:17,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:33:17,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1555, now seen corresponding path program 1 times [2021-10-24 10:33:17,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:33:17,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10505067] [2021-10-24 10:33:17,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:33:17,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:33:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:33:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:17,531 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:33:17,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10505067] [2021-10-24 10:33:17,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10505067] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:33:17,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:33:17,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-24 10:33:17,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968730943] [2021-10-24 10:33:17,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:33:17,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:33:17,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:33:17,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:33:17,536 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:17,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:33:17,548 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2021-10-24 10:33:17,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:33:17,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-24 10:33:17,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:33:17,550 INFO L225 Difference]: With dead ends: 6 [2021-10-24 10:33:17,550 INFO L226 Difference]: Without dead ends: 6 [2021-10-24 10:33:17,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:33:17,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-10-24 10:33:17,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-24 10:33:17,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:17,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2021-10-24 10:33:17,553 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 2 [2021-10-24 10:33:17,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:33:17,554 INFO L470 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2021-10-24 10:33:17,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:17,554 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2021-10-24 10:33:17,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 10:33:17,555 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:33:17,555 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 10:33:17,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:33:17,556 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-24 10:33:17,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:33:17,557 INFO L82 PathProgramCache]: Analyzing trace with hash 46808961, now seen corresponding path program 1 times [2021-10-24 10:33:17,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:33:17,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515113034] [2021-10-24 10:33:17,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:33:17,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:33:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:33:17,589 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:33:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:33:17,637 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:33:17,637 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:33:17,638 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:33:17,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-24 10:33:17,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-24 10:33:17,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-24 10:33:17,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-24 10:33:17,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-24 10:33:17,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-24 10:33:17,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 10:33:17,648 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:33:17,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:33:17 BoogieIcfgContainer [2021-10-24 10:33:17,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:33:17,663 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:33:17,663 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:33:17,664 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:33:17,664 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:33:17" (3/4) ... [2021-10-24 10:33:17,667 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:33:17,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:33:17,669 INFO L168 Benchmark]: Toolchain (without parser) took 1475.60 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 60.5 MB in the beginning and 72.1 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:17,670 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 96.5 MB. Free memory is still 50.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:33:17,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.29 ms. Allocated memory is still 96.5 MB. Free memory was 60.3 MB in the beginning and 65.1 MB in the end (delta: -4.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:17,671 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.64 ms. Allocated memory is still 96.5 MB. Free memory was 65.1 MB in the beginning and 63.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:17,672 INFO L168 Benchmark]: Boogie Preprocessor took 22.12 ms. Allocated memory is still 96.5 MB. Free memory was 63.4 MB in the beginning and 62.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:33:17,673 INFO L168 Benchmark]: RCFGBuilder took 344.72 ms. Allocated memory is still 96.5 MB. Free memory was 62.2 MB in the beginning and 50.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:17,673 INFO L168 Benchmark]: TraceAbstraction took 645.05 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 50.2 MB in the beginning and 72.6 MB in the end (delta: -22.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:17,674 INFO L168 Benchmark]: Witness Printer took 4.44 ms. Allocated memory is still 117.4 MB. Free memory was 72.6 MB in the beginning and 72.1 MB in the end (delta: 562.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:33:17,678 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 96.5 MB. Free memory is still 50.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 408.29 ms. Allocated memory is still 96.5 MB. Free memory was 60.3 MB in the beginning and 65.1 MB in the end (delta: -4.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.64 ms. Allocated memory is still 96.5 MB. Free memory was 65.1 MB in the beginning and 63.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.12 ms. Allocated memory is still 96.5 MB. Free memory was 63.4 MB in the beginning and 62.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 344.72 ms. Allocated memory is still 96.5 MB. Free memory was 62.2 MB in the beginning and 50.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 645.05 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 50.2 MB in the beginning and 72.6 MB in the end (delta: -22.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.44 ms. Allocated memory is still 117.4 MB. Free memory was 72.6 MB in the beginning and 72.1 MB in the end (delta: 562.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 523]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 523. Possible FailurePath: [L525-L532] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L533] data.p0 = malloc(37U) [L534] data.str.p2 = &data [L535] data.str.c[1] = sizeof data.str.p1 [L536] return 0; [L536] return 0; - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 530.9ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 11.1ms, AutomataDifference: 77.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 19.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 7 SDslu, 1 SDs, 0 SdLazy, 13 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.5ms SsaConstructionTime, 67.2ms SatisfiabilityAnalysisTime, 107.7ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-24 10:33:17,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:33:20,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:33:20,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:33:20,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:33:20,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:33:20,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:33:20,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:33:20,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:33:20,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:33:20,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:33:20,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:33:20,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:33:20,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:33:20,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:33:20,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:33:20,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:33:20,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:33:20,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:33:20,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:33:20,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:33:20,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:33:20,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:33:20,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:33:20,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:33:20,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:33:20,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:33:20,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:33:20,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:33:20,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:33:20,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:33:20,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:33:20,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:33:20,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:33:20,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:33:20,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:33:20,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:33:20,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:33:20,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:33:20,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:33:20,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:33:20,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:33:20,296 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-24 10:33:20,339 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:33:20,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:33:20,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:33:20,341 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:33:20,341 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:33:20,341 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:33:20,341 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:33:20,341 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:33:20,342 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:33:20,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:33:20,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:33:20,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:33:20,343 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:33:20,343 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:33:20,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:33:20,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:33:20,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:33:20,344 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:33:20,344 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:33:20,345 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:33:20,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:33:20,349 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:33:20,349 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:33:20,349 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:33:20,350 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:33:20,350 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:33:20,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:33:20,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:33:20,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:33:20,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:33:20,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:33:20,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:33:20,352 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:33:20,352 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:33:20,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:33:20,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:33:20,354 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71b5f65f2f8d87850f90a0c5b95ff806d4054a596ed67d86f7cc490935279607 [2021-10-24 10:33:20,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:33:20,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:33:20,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:33:20,752 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:33:20,753 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:33:20,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/memsafety/test-0158-2.i [2021-10-24 10:33:20,826 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/data/39dbfc25c/fc1bfa2e38264d33935080a96ef047bc/FLAGd58bafcd7 [2021-10-24 10:33:21,404 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:33:21,406 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/sv-benchmarks/c/memsafety/test-0158-2.i [2021-10-24 10:33:21,425 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/data/39dbfc25c/fc1bfa2e38264d33935080a96ef047bc/FLAGd58bafcd7 [2021-10-24 10:33:21,661 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/data/39dbfc25c/fc1bfa2e38264d33935080a96ef047bc [2021-10-24 10:33:21,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:33:21,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:33:21,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:33:21,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:33:21,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:33:21,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:33:21" (1/1) ... [2021-10-24 10:33:21,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a0a7849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:21, skipping insertion in model container [2021-10-24 10:33:21,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:33:21" (1/1) ... [2021-10-24 10:33:21,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:33:21,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:33:21,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:33:22,010 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:33:22,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:33:22,158 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:33:22,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:22 WrapperNode [2021-10-24 10:33:22,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:33:22,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:33:22,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:33:22,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:33:22,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:22" (1/1) ... [2021-10-24 10:33:22,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:22" (1/1) ... [2021-10-24 10:33:22,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:33:22,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:33:22,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:33:22,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:33:22,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:22" (1/1) ... [2021-10-24 10:33:22,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:22" (1/1) ... [2021-10-24 10:33:22,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:22" (1/1) ... [2021-10-24 10:33:22,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:22" (1/1) ... [2021-10-24 10:33:22,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:22" (1/1) ... [2021-10-24 10:33:22,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:22" (1/1) ... [2021-10-24 10:33:22,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:22" (1/1) ... [2021-10-24 10:33:22,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:33:22,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:33:22,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:33:22,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:33:22,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:22" (1/1) ... [2021-10-24 10:33:22,284 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:33:22,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:33:22,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:33:22,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:33:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 10:33:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-24 10:33:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:33:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-24 10:33:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:33:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:33:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:33:22,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:33:22,666 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:33:22,667 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-24 10:33:22,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:33:22 BoogieIcfgContainer [2021-10-24 10:33:22,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:33:22,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:33:22,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:33:22,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:33:22,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:33:21" (1/3) ... [2021-10-24 10:33:22,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c774d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:33:22, skipping insertion in model container [2021-10-24 10:33:22,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:22" (2/3) ... [2021-10-24 10:33:22,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c774d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:33:22, skipping insertion in model container [2021-10-24 10:33:22,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:33:22" (3/3) ... [2021-10-24 10:33:22,689 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-2.i [2021-10-24 10:33:22,695 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:33:22,695 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-24 10:33:22,794 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:33:22,813 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:33:22,813 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-24 10:33:22,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 16 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:22,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 10:33:22,845 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:33:22,846 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 10:33:22,877 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-24 10:33:22,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:33:22,883 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-10-24 10:33:22,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:33:22,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753809173] [2021-10-24 10:33:22,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:33:22,904 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:33:22,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:33:22,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:33:22,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:33:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:33:23,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:33:23,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:33:23,114 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-24 10:33:23,116 INFO L388 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-24 10:33:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:23,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:33:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:23,207 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:33:23,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753809173] [2021-10-24 10:33:23,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753809173] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:33:23,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:33:23,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:33:23,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511381923] [2021-10-24 10:33:23,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:33:23,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:33:23,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:33:23,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:33:23,241 INFO L87 Difference]: Start difference. First operand has 17 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 16 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:23,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:33:23,303 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2021-10-24 10:33:23,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:33:23,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-24 10:33:23,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:33:23,312 INFO L225 Difference]: With dead ends: 14 [2021-10-24 10:33:23,312 INFO L226 Difference]: Without dead ends: 12 [2021-10-24 10:33:23,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:33:23,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-24 10:33:23,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-24 10:33:23,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:23,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-10-24 10:33:23,341 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 3 [2021-10-24 10:33:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:33:23,342 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-10-24 10:33:23,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:23,342 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-10-24 10:33:23,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 10:33:23,343 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:33:23,343 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 10:33:23,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-24 10:33:23,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:33:23,561 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-24 10:33:23,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:33:23,562 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-10-24 10:33:23,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:33:23,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088171657] [2021-10-24 10:33:23,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:33:23,564 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:33:23,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:33:23,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:33:23,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:33:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:33:23,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 10:33:23,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:33:23,697 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-24 10:33:23,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-10-24 10:33:23,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-10-24 10:33:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:23,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:33:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:23,835 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:33:23,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088171657] [2021-10-24 10:33:23,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088171657] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:33:23,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:33:23,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-24 10:33:23,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312923264] [2021-10-24 10:33:23,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:33:23,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:33:23,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:33:23,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:33:23,839 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:23,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:33:23,903 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-10-24 10:33:23,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:33:23,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-24 10:33:23,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:33:23,904 INFO L225 Difference]: With dead ends: 9 [2021-10-24 10:33:23,904 INFO L226 Difference]: Without dead ends: 9 [2021-10-24 10:33:23,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:33:23,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-24 10:33:23,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-24 10:33:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:23,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-24 10:33:23,907 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 3 [2021-10-24 10:33:23,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:33:23,908 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-24 10:33:23,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:23,908 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-24 10:33:23,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:33:23,909 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:33:23,909 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:33:23,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:33:24,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:33:24,116 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-24 10:33:24,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:33:24,117 INFO L82 PathProgramCache]: Analyzing trace with hash 59200043, now seen corresponding path program 1 times [2021-10-24 10:33:24,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:33:24,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308650265] [2021-10-24 10:33:24,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:33:24,119 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:33:24,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:33:24,120 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:33:24,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:33:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:33:24,229 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:33:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:33:24,315 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 10:33:24,315 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:33:24,316 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:33:24,318 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-24 10:33:24,318 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-24 10:33:24,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-24 10:33:24,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-24 10:33:24,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-24 10:33:24,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-24 10:33:24,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:33:24,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:33:24,526 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:33:24,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:33:24 BoogieIcfgContainer [2021-10-24 10:33:24,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:33:24,551 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:33:24,551 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:33:24,551 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:33:24,552 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:33:22" (3/4) ... [2021-10-24 10:33:24,557 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:33:24,557 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:33:24,564 INFO L168 Benchmark]: Toolchain (without parser) took 2893.53 ms. Allocated memory was 69.2 MB in the beginning and 107.0 MB in the end (delta: 37.7 MB). Free memory was 47.5 MB in the beginning and 71.4 MB in the end (delta: -23.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:24,565 INFO L168 Benchmark]: CDTParser took 1.21 ms. Allocated memory is still 69.2 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:33:24,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 492.67 ms. Allocated memory is still 69.2 MB. Free memory was 47.4 MB in the beginning and 47.5 MB in the end (delta: -127.8 kB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:24,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.64 ms. Allocated memory is still 69.2 MB. Free memory was 47.5 MB in the beginning and 45.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:33:24,567 INFO L168 Benchmark]: Boogie Preprocessor took 42.09 ms. Allocated memory is still 69.2 MB. Free memory was 45.7 MB in the beginning and 44.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:24,570 INFO L168 Benchmark]: RCFGBuilder took 404.89 ms. Allocated memory is still 69.2 MB. Free memory was 44.4 MB in the beginning and 33.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:24,571 INFO L168 Benchmark]: TraceAbstraction took 1866.97 ms. Allocated memory was 69.2 MB in the beginning and 107.0 MB in the end (delta: 37.7 MB). Free memory was 33.4 MB in the beginning and 71.4 MB in the end (delta: -37.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:33:24,571 INFO L168 Benchmark]: Witness Printer took 6.45 ms. Allocated memory is still 107.0 MB. Free memory is still 71.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:33:24,580 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.21 ms. Allocated memory is still 69.2 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 492.67 ms. Allocated memory is still 69.2 MB. Free memory was 47.4 MB in the beginning and 47.5 MB in the end (delta: -127.8 kB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.64 ms. Allocated memory is still 69.2 MB. Free memory was 47.5 MB in the beginning and 45.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.09 ms. Allocated memory is still 69.2 MB. Free memory was 45.7 MB in the beginning and 44.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 404.89 ms. Allocated memory is still 69.2 MB. Free memory was 44.4 MB in the beginning and 33.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1866.97 ms. Allocated memory was 69.2 MB in the beginning and 107.0 MB in the end (delta: 37.7 MB). Free memory was 33.4 MB in the beginning and 71.4 MB in the end (delta: -37.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.45 ms. Allocated memory is still 107.0 MB. Free memory is still 71.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 523]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 523. Possible FailurePath: [L525-L532] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L533] data.p0 = malloc(37U) [L534] data.str.p2 = &data [L535] data.str.c[1] = sizeof data.str.p1 [L536] return 0; [L536] return 0; - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 1731.7ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 20.7ms, AutomataDifference: 160.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 SDtfs, 11 SDslu, 3 SDs, 0 SdLazy, 19 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 40.9ms SsaConstructionTime, 93.9ms SatisfiabilityAnalysisTime, 401.3ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 1 QuantifiedInterpolants, 48 SizeOfPredicates, 5 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-24 10:33:24,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61247ab9-3bbc-4783-857d-f78884c040da/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...