./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG --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 8cad73f64954eeb86e2707e579f8aca932182fe823da421e8ece02d4d63f0cc3 ............................................................................................................................................. 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_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG --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 8cad73f64954eeb86e2707e579f8aca932182fe823da421e8ece02d4d63f0cc3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:01:54,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:01:54,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:01:54,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:01:54,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:01:54,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:01:54,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:01:54,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:01:54,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:01:54,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:01:54,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:01:54,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:01:54,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:01:54,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:01:54,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:01:54,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:01:54,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:01:54,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:01:54,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:01:54,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:01:54,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:01:54,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:01:54,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:01:54,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:01:54,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:01:54,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:01:54,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:01:54,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:01:54,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:01:54,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:01:54,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:01:54,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:01:54,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:01:54,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:01:54,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:01:54,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:01:54,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:01:54,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:01:54,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:01:54,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:01:54,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:01:54,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-29 05:01:54,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:01:54,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:01:54,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:01:54,920 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:01:54,921 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:01:54,921 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:01:54,921 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:01:54,922 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:01:54,922 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:01:54,922 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:01:54,924 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:01:54,924 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:01:54,925 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:01:54,925 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:01:54,925 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:01:54,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:01:54,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:01:54,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:01:54,929 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:01:54,929 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:01:54,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:01:54,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:01:54,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:01:54,930 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:01:54,931 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:01:54,931 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:01:54,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:01:54,932 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:01:54,932 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:01:54,932 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:01:54,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:01:54,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:01:54,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:01:54,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:01:54,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:01:54,935 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:01:54,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:01:54,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:01:54,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:01:54,936 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_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cad73f64954eeb86e2707e579f8aca932182fe823da421e8ece02d4d63f0cc3 [2021-10-29 05:01:55,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:01:55,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:01:55,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:01:55,484 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:01:55,485 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:01:55,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2021-10-29 05:01:55,600 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/data/c86e081f9/3b8e311b2d8c48eb9b4e5942083824e6/FLAGd54f72af9 [2021-10-29 05:01:56,522 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:01:56,524 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2021-10-29 05:01:56,564 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/data/c86e081f9/3b8e311b2d8c48eb9b4e5942083824e6/FLAGd54f72af9 [2021-10-29 05:01:56,649 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/data/c86e081f9/3b8e311b2d8c48eb9b4e5942083824e6 [2021-10-29 05:01:56,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:01:56,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:01:56,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:01:56,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:01:56,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:01:56,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:01:56" (1/1) ... [2021-10-29 05:01:56,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18710686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:56, skipping insertion in model container [2021-10-29 05:01:56,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:01:56" (1/1) ... [2021-10-29 05:01:56,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:01:56,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:01:57,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:01:57,514 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-29 05:01:57,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@120b5ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:57, skipping insertion in model container [2021-10-29 05:01:57,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:01:57,517 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-29 05:01:57,522 INFO L168 Benchmark]: Toolchain (without parser) took 861.69 ms. Allocated memory is still 100.7 MB. Free memory was 59.0 MB in the beginning and 69.9 MB in the end (delta: -10.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:01:57,523 INFO L168 Benchmark]: CDTParser took 0.87 ms. Allocated memory is still 100.7 MB. Free memory is still 76.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:01:57,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 856.88 ms. Allocated memory is still 100.7 MB. Free memory was 58.9 MB in the beginning and 69.9 MB in the end (delta: -11.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:01:57,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 ms. Allocated memory is still 100.7 MB. Free memory is still 76.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 856.88 ms. Allocated memory is still 100.7 MB. Free memory was 58.9 MB in the beginning and 69.9 MB in the end (delta: -11.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:02:00,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:02:00,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:02:00,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:02:00,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:02:00,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:02:00,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:02:00,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:02:00,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:02:00,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:02:00,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:02:00,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:02:00,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:02:00,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:02:00,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:02:00,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:02:00,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:02:00,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:02:00,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:02:00,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:02:00,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:02:00,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:02:00,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:02:00,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:02:00,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:02:00,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:02:00,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:02:00,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:02:00,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:02:00,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:02:00,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:02:00,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:02:00,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:02:00,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:02:00,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:02:00,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:02:00,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:02:00,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:02:00,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:02:00,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:02:00,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:02:00,913 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-29 05:02:00,975 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:02:00,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:02:00,978 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:02:00,978 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:02:00,978 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:02:00,979 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:02:00,979 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:02:00,979 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:02:00,980 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:02:00,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:02:00,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:02:00,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:02:00,982 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:02:00,983 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:02:00,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:02:00,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:02:00,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:02:00,984 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:02:00,984 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:02:00,984 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:02:00,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:02:00,985 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:02:00,985 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:02:00,986 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:02:00,986 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:02:00,986 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:02:00,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:02:00,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:02:00,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:02:00,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:02:00,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:02:00,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:02:00,989 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:02:00,989 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:02:00,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:02:00,990 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:02:00,990 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_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cad73f64954eeb86e2707e579f8aca932182fe823da421e8ece02d4d63f0cc3 [2021-10-29 05:02:01,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:02:01,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:02:01,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:02:01,626 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:02:01,627 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:02:01,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2021-10-29 05:02:01,724 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/data/b8d6041ba/3affde4b81b64d37966a6fd67ec942d5/FLAG178d6c146 [2021-10-29 05:02:02,768 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:02:02,779 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2021-10-29 05:02:02,810 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/data/b8d6041ba/3affde4b81b64d37966a6fd67ec942d5/FLAG178d6c146 [2021-10-29 05:02:03,320 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/data/b8d6041ba/3affde4b81b64d37966a6fd67ec942d5 [2021-10-29 05:02:03,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:02:03,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:02:03,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:02:03,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:02:03,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:02:03,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:02:03" (1/1) ... [2021-10-29 05:02:03,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@396e8444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:03, skipping insertion in model container [2021-10-29 05:02:03,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:02:03" (1/1) ... [2021-10-29 05:02:03,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:02:03,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:02:04,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:02:04,236 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-29 05:02:04,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:02:04,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:02:04,417 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:02:04,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:02:04,646 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:02:04,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:04 WrapperNode [2021-10-29 05:02:04,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:02:04,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:02:04,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:02:04,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:02:04,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:04" (1/1) ... [2021-10-29 05:02:04,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:04" (1/1) ... [2021-10-29 05:02:04,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:02:04,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:02:04,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:02:04,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:02:04,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:04" (1/1) ... [2021-10-29 05:02:04,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:04" (1/1) ... [2021-10-29 05:02:04,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:04" (1/1) ... [2021-10-29 05:02:04,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:04" (1/1) ... [2021-10-29 05:02:04,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:04" (1/1) ... [2021-10-29 05:02:04,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:04" (1/1) ... [2021-10-29 05:02:04,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:04" (1/1) ... [2021-10-29 05:02:04,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:02:04,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:02:04,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:02:04,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:02:04,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:04" (1/1) ... [2021-10-29 05:02:04,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:02:04,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:02:04,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:02:04,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:02:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 05:02:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:02:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:02:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-29 05:02:04,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:02:04,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:02:05,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:02:05,406 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-29 05:02:05,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:02:05 BoogieIcfgContainer [2021-10-29 05:02:05,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:02:05,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:02:05,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:02:05,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:02:05,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:02:03" (1/3) ... [2021-10-29 05:02:05,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7718b3b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:02:05, skipping insertion in model container [2021-10-29 05:02:05,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:04" (2/3) ... [2021-10-29 05:02:05,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7718b3b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:02:05, skipping insertion in model container [2021-10-29 05:02:05,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:02:05" (3/3) ... [2021-10-29 05:02:05,440 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test21-2.i [2021-10-29 05:02:05,448 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:02:05,448 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-29 05:02:05,519 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:02:05,528 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 [2021-10-29 05:02:05,528 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-29 05:02:05,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 16 states have internal predecessors, (19), 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) [2021-10-29 05:02:05,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:02:05,562 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:02:05,563 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:02:05,564 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-29 05:02:05,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:02:05,570 INFO L85 PathProgramCache]: Analyzing trace with hash 119383820, now seen corresponding path program 1 times [2021-10-29 05:02:05,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:02:05,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875237859] [2021-10-29 05:02:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:02:05,591 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:02:05,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:02:05,594 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:02:05,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:02:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:02:05,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:02:05,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:02:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:02:06,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:02:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:02:06,146 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:02:06,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875237859] [2021-10-29 05:02:06,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875237859] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:02:06,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:02:06,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-29 05:02:06,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212071786] [2021-10-29 05:02:06,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:02:06,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:02:06,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:02:06,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:02:06,190 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 16 states have internal predecessors, (19), 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 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 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) [2021-10-29 05:02:06,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:02:06,479 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-10-29 05:02:06,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:02:06,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 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) Word has length 8 [2021-10-29 05:02:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:02:06,509 INFO L225 Difference]: With dead ends: 32 [2021-10-29 05:02:06,510 INFO L226 Difference]: Without dead ends: 26 [2021-10-29 05:02:06,519 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:02:06,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-29 05:02:06,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2021-10-29 05:02:06,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 17 states have internal predecessors, (20), 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) [2021-10-29 05:02:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-10-29 05:02:06,566 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2021-10-29 05:02:06,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:02:06,567 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-10-29 05:02:06,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 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) [2021-10-29 05:02:06,568 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-10-29 05:02:06,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:02:06,569 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:02:06,569 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:02:06,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-29 05:02:06,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:02:06,784 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-29 05:02:06,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:02:06,785 INFO L85 PathProgramCache]: Analyzing trace with hash 119443402, now seen corresponding path program 1 times [2021-10-29 05:02:06,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:02:06,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327893010] [2021-10-29 05:02:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:02:06,787 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:02:06,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:02:06,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:02:06,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:02:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:02:06,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:02:06,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:02:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:02:06,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:02:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:02:06,987 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:02:06,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327893010] [2021-10-29 05:02:06,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327893010] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:02:06,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:02:06,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:02:06,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742912951] [2021-10-29 05:02:06,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:02:06,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:02:06,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:02:06,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:02:06,995 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-10-29 05:02:07,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:02:07,037 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-10-29 05:02:07,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:02:07,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) Word has length 8 [2021-10-29 05:02:07,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:02:07,039 INFO L225 Difference]: With dead ends: 29 [2021-10-29 05:02:07,040 INFO L226 Difference]: Without dead ends: 29 [2021-10-29 05:02:07,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:02:07,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-29 05:02:07,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2021-10-29 05:02:07,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.375) internal successors, (22), 19 states have internal predecessors, (22), 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) [2021-10-29 05:02:07,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-10-29 05:02:07,048 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 8 [2021-10-29 05:02:07,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:02:07,048 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-29 05:02:07,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-10-29 05:02:07,049 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-10-29 05:02:07,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:02:07,050 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:02:07,050 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:02:07,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:02:07,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:02:07,264 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-29 05:02:07,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:02:07,265 INFO L85 PathProgramCache]: Analyzing trace with hash 176701704, now seen corresponding path program 1 times [2021-10-29 05:02:07,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:02:07,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382594651] [2021-10-29 05:02:07,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:02:07,267 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:02:07,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:02:07,272 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:02:07,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:02:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:02:07,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:02:07,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:02:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:02:07,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:02:07,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:02:07,669 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:02:07,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382594651] [2021-10-29 05:02:07,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382594651] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:02:07,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:02:07,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:02:07,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106440729] [2021-10-29 05:02:07,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:02:07,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:02:07,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:02:07,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:02:07,673 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-10-29 05:02:07,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:02:07,716 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-10-29 05:02:07,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:02:07,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) Word has length 8 [2021-10-29 05:02:07,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:02:07,719 INFO L225 Difference]: With dead ends: 20 [2021-10-29 05:02:07,719 INFO L226 Difference]: Without dead ends: 20 [2021-10-29 05:02:07,720 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:02:07,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-29 05:02:07,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-10-29 05:02:07,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 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) [2021-10-29 05:02:07,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-29 05:02:07,732 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2021-10-29 05:02:07,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:02:07,733 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-29 05:02:07,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-10-29 05:02:07,735 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-29 05:02:07,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:02:07,736 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:02:07,736 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:02:07,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:02:07,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:02:07,952 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-29 05:02:07,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:02:07,953 INFO L85 PathProgramCache]: Analyzing trace with hash 176701963, now seen corresponding path program 1 times [2021-10-29 05:02:07,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:02:07,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865483325] [2021-10-29 05:02:07,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:02:07,955 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:02:07,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:02:07,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:02:07,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:02:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:02:08,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:02:08,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:02:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:02:08,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:02:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:02:08,186 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:02:08,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865483325] [2021-10-29 05:02:08,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865483325] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:02:08,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:02:08,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:02:08,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030571263] [2021-10-29 05:02:08,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:02:08,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:02:08,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:02:08,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:02:08,190 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2021-10-29 05:02:08,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:02:08,220 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-10-29 05:02:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:02:08,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) Word has length 8 [2021-10-29 05:02:08,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:02:08,222 INFO L225 Difference]: With dead ends: 26 [2021-10-29 05:02:08,222 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 05:02:08,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:02:08,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 05:02:08,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 14. [2021-10-29 05:02:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 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) [2021-10-29 05:02:08,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-29 05:02:08,227 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2021-10-29 05:02:08,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:02:08,227 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-29 05:02:08,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2021-10-29 05:02:08,229 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-29 05:02:08,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:02:08,230 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:02:08,230 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:02:08,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:02:08,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:02:08,444 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-29 05:02:08,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:02:08,445 INFO L85 PathProgramCache]: Analyzing trace with hash -594068823, now seen corresponding path program 1 times [2021-10-29 05:02:08,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:02:08,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72830211] [2021-10-29 05:02:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:02:08,447 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:02:08,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:02:08,448 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:02:08,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 05:02:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:02:08,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 05:02:08,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:02:08,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:02:08,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:02:09,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:02:09,044 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:02:09,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72830211] [2021-10-29 05:02:09,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72830211] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:02:09,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:02:09,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-29 05:02:09,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794681742] [2021-10-29 05:02:09,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-29 05:02:09,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:02:09,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-29 05:02:09,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-29 05:02:09,049 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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) [2021-10-29 05:02:09,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:02:09,753 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-10-29 05:02:09,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-29 05:02:09,758 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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 9 [2021-10-29 05:02:09,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:02:09,759 INFO L225 Difference]: With dead ends: 23 [2021-10-29 05:02:09,759 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 05:02:09,761 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-10-29 05:02:09,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 05:02:09,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 13. [2021-10-29 05:02:09,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 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) [2021-10-29 05:02:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-29 05:02:09,765 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 9 [2021-10-29 05:02:09,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:02:09,766 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-29 05:02:09,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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) [2021-10-29 05:02:09,767 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-29 05:02:09,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:02:09,767 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:02:09,768 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:02:09,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:02:09,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:02:09,990 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-29 05:02:09,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:02:09,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1236264274, now seen corresponding path program 1 times [2021-10-29 05:02:09,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:02:09,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365964830] [2021-10-29 05:02:09,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:02:09,992 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:02:09,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:02:09,994 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:02:09,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 05:02:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:02:10,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:02:10,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:02:10,159 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:02:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:02:10,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:02:10,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:02:10,449 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:02:10,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365964830] [2021-10-29 05:02:10,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365964830] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:02:10,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:02:10,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-29 05:02:10,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627543434] [2021-10-29 05:02:10,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:02:10,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:02:10,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:02:10,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:02:10,454 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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) [2021-10-29 05:02:10,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:02:10,661 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-10-29 05:02:10,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:02:10,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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 10 [2021-10-29 05:02:10,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:02:10,663 INFO L225 Difference]: With dead ends: 20 [2021-10-29 05:02:10,663 INFO L226 Difference]: Without dead ends: 20 [2021-10-29 05:02:10,664 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:02:10,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-29 05:02:10,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-29 05:02:10,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 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) [2021-10-29 05:02:10,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-10-29 05:02:10,675 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2021-10-29 05:02:10,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:02:10,676 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-10-29 05:02:10,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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) [2021-10-29 05:02:10,676 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-10-29 05:02:10,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:02:10,677 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:02:10,678 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:02:10,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:02:10,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:02:10,879 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-29 05:02:10,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:02:10,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2045610900, now seen corresponding path program 1 times [2021-10-29 05:02:10,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:02:10,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932196894] [2021-10-29 05:02:10,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:02:10,881 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:02:10,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:02:10,891 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:02:10,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 05:02:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:02:11,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:02:11,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:02:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:02:11,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:02:11,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:02:11,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:02:11,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932196894] [2021-10-29 05:02:11,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932196894] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:02:11,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:02:11,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:02:11,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737844945] [2021-10-29 05:02:11,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:02:11,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:02:11,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:02:11,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:02:11,153 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-29 05:02:11,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:02:11,184 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2021-10-29 05:02:11,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:02:11,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-10-29 05:02:11,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:02:11,186 INFO L225 Difference]: With dead ends: 14 [2021-10-29 05:02:11,186 INFO L226 Difference]: Without dead ends: 12 [2021-10-29 05:02:11,186 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:02:11,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-29 05:02:11,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-29 05:02:11,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0) 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) [2021-10-29 05:02:11,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-10-29 05:02:11,189 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 10 [2021-10-29 05:02:11,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:02:11,190 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-10-29 05:02:11,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-29 05:02:11,190 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-10-29 05:02:11,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:02:11,191 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:02:11,191 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:02:11,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:02:11,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:02:11,392 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-29 05:02:11,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:02:11,393 INFO L85 PathProgramCache]: Analyzing trace with hash 330513232, now seen corresponding path program 1 times [2021-10-29 05:02:11,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:02:11,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567414372] [2021-10-29 05:02:11,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:02:11,394 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:02:11,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:02:11,400 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:02:11,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 05:02:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:02:11,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 05:02:11,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:02:11,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:02:11,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:02:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:02:18,908 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:02:18,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567414372] [2021-10-29 05:02:18,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567414372] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:02:18,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:02:18,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-29 05:02:18,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864440623] [2021-10-29 05:02:18,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-29 05:02:18,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:02:18,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-29 05:02:18,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=172, Unknown=3, NotChecked=0, Total=210 [2021-10-29 05:02:18,912 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-10-29 05:02:19,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:02:19,448 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-10-29 05:02:19,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 05:02:19,449 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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 11 [2021-10-29 05:02:19,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:02:19,450 INFO L225 Difference]: With dead ends: 11 [2021-10-29 05:02:19,450 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:02:19,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=87, Invalid=290, Unknown=3, NotChecked=0, Total=380 [2021-10-29 05:02:19,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:02:19,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:02:19,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-29 05:02:19,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:02:19,452 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-29 05:02:19,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:02:19,452 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:02:19,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-10-29 05:02:19,453 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:02:19,453 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:02:19,458 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:02:19,459 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:02:19,459 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:02:19,460 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:02:19,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 05:02:19,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:02:19,667 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:02:19,669 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:02:19,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:02:19 BoogieIcfgContainer [2021-10-29 05:02:19,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:02:19,678 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:02:19,679 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:02:19,679 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:02:19,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:02:05" (3/4) ... [2021-10-29 05:02:19,684 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:02:19,708 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-29 05:02:19,708 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 05:02:19,709 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:02:19,775 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:02:19,775 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:02:19,777 INFO L168 Benchmark]: Toolchain (without parser) took 16447.66 ms. Allocated memory was 62.9 MB in the beginning and 111.1 MB in the end (delta: 48.2 MB). Free memory was 41.8 MB in the beginning and 75.3 MB in the end (delta: -33.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:02:19,778 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 62.9 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:02:19,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1315.12 ms. Allocated memory is still 62.9 MB. Free memory was 41.6 MB in the beginning and 28.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:02:19,779 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.45 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 28.7 MB in the beginning and 73.5 MB in the end (delta: -44.7 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:02:19,780 INFO L168 Benchmark]: Boogie Preprocessor took 52.84 ms. Allocated memory is still 92.3 MB. Free memory was 73.5 MB in the beginning and 72.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:02:19,781 INFO L168 Benchmark]: RCFGBuilder took 589.70 ms. Allocated memory is still 92.3 MB. Free memory was 72.0 MB in the beginning and 61.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:02:19,782 INFO L168 Benchmark]: TraceAbstraction took 14264.88 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 60.9 MB in the beginning and 77.5 MB in the end (delta: -16.7 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:02:19,782 INFO L168 Benchmark]: Witness Printer took 97.08 ms. Allocated memory is still 111.1 MB. Free memory was 77.5 MB in the beginning and 75.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:02:19,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 62.9 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1315.12 ms. Allocated memory is still 62.9 MB. Free memory was 41.6 MB in the beginning and 28.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 115.45 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 28.7 MB in the beginning and 73.5 MB in the end (delta: -44.7 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.84 ms. Allocated memory is still 92.3 MB. Free memory was 73.5 MB in the beginning and 72.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 589.70 ms. Allocated memory is still 92.3 MB. Free memory was 72.0 MB in the beginning and 61.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14264.88 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 60.9 MB in the beginning and 77.5 MB in the end (delta: -16.7 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * Witness Printer took 97.08 ms. Allocated memory is still 111.1 MB. Free memory was 77.5 MB in the beginning and 75.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 779]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 14.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 96 SDtfs, 238 SDslu, 158 SDs, 0 SdLazy, 226 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 38 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 128 ConstructedInterpolants, 2 QuantifiedInterpolants, 572 SizeOfPredicates, 39 NumberOfNonLiveVariables, 343 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-29 05:02:19,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21ec26d-3eca-4a78-9f1b-b8f9e2c5d106/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...