./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs --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 cf7af2f20e563d03f4a81a8dac054ded849cb34c ............................................................................................................................................. 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_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs --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 cf7af2f20e563d03f4a81a8dac054ded849cb34c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:31:05,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:31:05,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:31:05,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:31:05,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:31:05,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:31:05,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:31:05,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:31:05,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:31:05,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:31:05,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:31:05,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:31:05,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:31:05,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:31:05,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:31:05,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:31:05,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:31:05,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:31:05,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:31:05,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:31:05,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:31:05,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:31:05,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:31:05,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:31:05,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:31:05,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:31:05,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:31:05,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:31:05,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:31:05,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:31:05,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:31:05,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:31:05,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:31:05,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:31:05,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:31:05,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:31:05,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:31:05,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:31:05,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:31:05,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:31:05,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:31:05,809 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-16 02:31:05,866 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:31:05,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:31:05,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:31:05,869 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:31:05,869 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:31:05,870 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:31:05,870 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:31:05,870 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:31:05,870 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:31:05,871 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:31:05,872 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:31:05,872 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:31:05,872 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:31:05,873 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:31:05,873 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:31:05,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:31:05,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:31:05,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:31:05,875 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:31:05,875 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:31:05,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:31:05,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:31:05,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:31:05,876 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:31:05,876 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:31:05,877 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:31:05,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:31:05,879 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:31:05,879 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:31:05,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:31:05,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:31:05,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:31:05,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:31:05,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:31:05,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:31:05,881 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:31:05,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:31:05,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:31:05,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:31:05,882 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_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf7af2f20e563d03f4a81a8dac054ded849cb34c [2021-10-16 02:31:06,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:31:06,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:31:06,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:31:06,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:31:06,230 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:31:06,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-16 02:31:06,302 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/data/317da3a94/1e6c45789e914c9eb7ae07fc79c1770b/FLAG1c9990fe2 [2021-10-16 02:31:07,040 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:31:07,041 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-16 02:31:07,067 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/data/317da3a94/1e6c45789e914c9eb7ae07fc79c1770b/FLAG1c9990fe2 [2021-10-16 02:31:07,234 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/data/317da3a94/1e6c45789e914c9eb7ae07fc79c1770b [2021-10-16 02:31:07,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:31:07,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:31:07,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:31:07,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:31:07,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:31:07,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:07" (1/1) ... [2021-10-16 02:31:07,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6edfebb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:07, skipping insertion in model container [2021-10-16 02:31:07,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:07" (1/1) ... [2021-10-16 02:31:07,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:31:07,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:31:07,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:31:07,687 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) [2021-10-16 02:31:07,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1180c4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:07, skipping insertion in model container [2021-10-16 02:31:07,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:31:07,689 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-16 02:31:07,693 INFO L168 Benchmark]: Toolchain (without parser) took 452.97 ms. Allocated memory is still 123.7 MB. Free memory was 98.2 MB in the beginning and 96.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:07,695 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 123.7 MB. Free memory is still 78.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:31:07,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 450.17 ms. Allocated memory is still 123.7 MB. Free memory was 98.2 MB in the beginning and 96.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:07,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 123.7 MB. Free memory is still 78.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 450.17 ms. Allocated memory is still 123.7 MB. Free memory was 98.2 MB in the beginning and 96.1 MB in the end (delta: 2.0 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: 562]: 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-5709675 [2021-10-16 02:31:10,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:31:10,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:31:10,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:31:10,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:31:10,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:31:10,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:31:10,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:31:10,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:31:10,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:31:10,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:31:10,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:31:10,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:31:10,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:31:10,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:31:10,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:31:10,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:31:10,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:31:10,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:31:10,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:31:10,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:31:10,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:31:10,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:31:10,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:31:10,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:31:10,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:31:10,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:31:10,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:31:10,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:31:10,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:31:10,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:31:10,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:31:10,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:31:10,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:31:10,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:31:10,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:31:10,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:31:10,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:31:10,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:31:10,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:31:10,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:31:10,763 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-16 02:31:10,820 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:31:10,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:31:10,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:31:10,822 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:31:10,823 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:31:10,823 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:31:10,823 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:31:10,824 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:31:10,824 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:31:10,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:31:10,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:31:10,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:31:10,828 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:31:10,828 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:31:10,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:31:10,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:31:10,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:31:10,829 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:31:10,829 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:31:10,829 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:31:10,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:31:10,830 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:31:10,830 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:31:10,830 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:31:10,830 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:31:10,831 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:31:10,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:31:10,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:31:10,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:31:10,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:31:10,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:31:10,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:31:10,833 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:31:10,833 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:31:10,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:31:10,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:31:10,834 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_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf7af2f20e563d03f4a81a8dac054ded849cb34c [2021-10-16 02:31:11,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:31:11,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:31:11,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:31:11,345 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:31:11,346 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:31:11,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-16 02:31:11,445 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/data/686f04e66/6f2d49d9beb74fe0a3bebd23379fe326/FLAGcf7180753 [2021-10-16 02:31:12,216 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:31:12,218 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-16 02:31:12,237 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/data/686f04e66/6f2d49d9beb74fe0a3bebd23379fe326/FLAGcf7180753 [2021-10-16 02:31:12,483 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/data/686f04e66/6f2d49d9beb74fe0a3bebd23379fe326 [2021-10-16 02:31:12,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:31:12,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:31:12,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:31:12,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:31:12,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:31:12,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:12" (1/1) ... [2021-10-16 02:31:12,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1263cbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:12, skipping insertion in model container [2021-10-16 02:31:12,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:12" (1/1) ... [2021-10-16 02:31:12,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:31:12,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:31:13,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:31:13,060 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-16 02:31:13,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:31:13,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:31:13,142 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:31:13,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:31:13,259 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:31:13,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:13 WrapperNode [2021-10-16 02:31:13,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:31:13,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:31:13,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:31:13,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:31:13,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:13" (1/1) ... [2021-10-16 02:31:13,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:13" (1/1) ... [2021-10-16 02:31:13,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:31:13,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:31:13,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:31:13,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:31:13,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:13" (1/1) ... [2021-10-16 02:31:13,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:13" (1/1) ... [2021-10-16 02:31:13,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:13" (1/1) ... [2021-10-16 02:31:13,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:13" (1/1) ... [2021-10-16 02:31:13,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:13" (1/1) ... [2021-10-16 02:31:13,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:13" (1/1) ... [2021-10-16 02:31:13,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:13" (1/1) ... [2021-10-16 02:31:13,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:31:13,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:31:13,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:31:13,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:31:13,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:13" (1/1) ... [2021-10-16 02:31:13,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:31:13,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:31:13,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:31:13,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:31:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:31:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:31:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:31:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:31:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:31:13,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:31:13,917 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:31:13,918 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-16 02:31:13,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:13 BoogieIcfgContainer [2021-10-16 02:31:13,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:31:13,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:31:13,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:31:13,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:31:13,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:31:12" (1/3) ... [2021-10-16 02:31:13,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9dcc92a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:31:13, skipping insertion in model container [2021-10-16 02:31:13,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:13" (2/3) ... [2021-10-16 02:31:13,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9dcc92a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:31:13, skipping insertion in model container [2021-10-16 02:31:13,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:13" (3/3) ... [2021-10-16 02:31:13,931 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2021-10-16 02:31:13,937 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:31:13,938 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-10-16 02:31:13,994 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:31:14,002 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, mConcurrency=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 [2021-10-16 02:31:14,003 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-16 02:31:14,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 33 states have internal predecessors, (35), 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) [2021-10-16 02:31:14,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:31:14,043 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:14,044 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:14,044 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-16 02:31:14,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:14,068 INFO L82 PathProgramCache]: Analyzing trace with hash 2097131947, now seen corresponding path program 1 times [2021-10-16 02:31:14,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:14,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962268402] [2021-10-16 02:31:14,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:14,084 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:14,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:14,088 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:14,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:31:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:14,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:31:14,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:14,303 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 [2021-10-16 02:31:14,457 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-16 02:31:14,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-10-16 02:31:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:14,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:14,828 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:14,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962268402] [2021-10-16 02:31:14,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962268402] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:14,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:14,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-16 02:31:14,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978334749] [2021-10-16 02:31:14,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:31:14,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:14,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:31:14,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:31:14,863 INFO L87 Difference]: Start difference. First operand has 34 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 33 states have internal predecessors, (35), 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 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2021-10-16 02:31:15,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:15,149 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-10-16 02:31:15,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:31:15,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) Word has length 9 [2021-10-16 02:31:15,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:15,170 INFO L225 Difference]: With dead ends: 30 [2021-10-16 02:31:15,171 INFO L226 Difference]: Without dead ends: 26 [2021-10-16 02:31:15,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 195.7ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:31:15,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-16 02:31:15,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-16 02:31:15,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 25 states have internal predecessors, (25), 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) [2021-10-16 02:31:15,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2021-10-16 02:31:15,217 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 9 [2021-10-16 02:31:15,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:15,218 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2021-10-16 02:31:15,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2021-10-16 02:31:15,219 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2021-10-16 02:31:15,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:31:15,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:15,221 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:15,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:15,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:15,434 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-16 02:31:15,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:15,436 INFO L82 PathProgramCache]: Analyzing trace with hash 2097131948, now seen corresponding path program 1 times [2021-10-16 02:31:15,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:15,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061285284] [2021-10-16 02:31:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:15,437 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:15,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:15,439 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:15,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:31:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:15,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:31:15,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:15,574 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 [2021-10-16 02:31:15,586 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 [2021-10-16 02:31:15,751 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-16 02:31:15,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-10-16 02:31:15,772 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:31:15,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2021-10-16 02:31:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:16,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:18,817 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:18,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061285284] [2021-10-16 02:31:18,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061285284] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:18,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:18,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 02:31:18,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810362659] [2021-10-16 02:31:18,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:31:18,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:18,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:31:18,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:31:18,825 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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) [2021-10-16 02:31:21,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:21,461 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-10-16 02:31:21,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:31:21,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 [2021-10-16 02:31:21,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:21,465 INFO L225 Difference]: With dead ends: 22 [2021-10-16 02:31:21,465 INFO L226 Difference]: Without dead ends: 22 [2021-10-16 02:31:21,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4776.9ms TimeCoverageRelationStatistics Valid=45, Invalid=86, Unknown=1, NotChecked=0, Total=132 [2021-10-16 02:31:21,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-16 02:31:21,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-16 02:31:21,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 21 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) [2021-10-16 02:31:21,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2021-10-16 02:31:21,471 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 9 [2021-10-16 02:31:21,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:21,472 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2021-10-16 02:31:21,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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) [2021-10-16 02:31:21,472 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2021-10-16 02:31:21,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:31:21,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:21,473 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:21,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:21,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:21,685 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-16 02:31:21,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:21,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1063541525, now seen corresponding path program 1 times [2021-10-16 02:31:21,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:21,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647570833] [2021-10-16 02:31:21,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:21,688 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:21,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:21,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:21,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:31:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:21,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:31:21,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:21,830 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 [2021-10-16 02:31:22,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-10-16 02:31:22,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 13 [2021-10-16 02:31:22,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-16 02:31:22,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-10-16 02:31:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:22,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:22,892 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:22,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647570833] [2021-10-16 02:31:22,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647570833] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:22,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:22,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-16 02:31:22,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510704562] [2021-10-16 02:31:22,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:31:22,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:22,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:31:22,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:31:22,896 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 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) [2021-10-16 02:31:23,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:23,605 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2021-10-16 02:31:23,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:31:23,614 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 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) Word has length 12 [2021-10-16 02:31:23,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:23,615 INFO L225 Difference]: With dead ends: 21 [2021-10-16 02:31:23,615 INFO L226 Difference]: Without dead ends: 21 [2021-10-16 02:31:23,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1032.4ms TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-10-16 02:31:23,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-16 02:31:23,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-16 02:31:23,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 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) [2021-10-16 02:31:23,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2021-10-16 02:31:23,622 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 12 [2021-10-16 02:31:23,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:23,623 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2021-10-16 02:31:23,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 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) [2021-10-16 02:31:23,623 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2021-10-16 02:31:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:31:23,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:23,624 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:23,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:23,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:23,832 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-16 02:31:23,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:23,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1063541524, now seen corresponding path program 1 times [2021-10-16 02:31:23,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:23,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944781880] [2021-10-16 02:31:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:23,835 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:23,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:23,836 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:23,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:31:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:23,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:31:23,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:23,942 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 [2021-10-16 02:31:24,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 22 treesize of output 18 [2021-10-16 02:31:24,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-10-16 02:31:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:24,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:24,233 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:24,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944781880] [2021-10-16 02:31:24,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944781880] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:24,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:24,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-16 02:31:24,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821086666] [2021-10-16 02:31:24,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:31:24,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:24,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:31:24,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:31:24,236 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:24,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:24,583 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2021-10-16 02:31:24,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:31:24,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-16 02:31:24,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:24,585 INFO L225 Difference]: With dead ends: 20 [2021-10-16 02:31:24,586 INFO L226 Difference]: Without dead ends: 20 [2021-10-16 02:31:24,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 280.5ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:31:24,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-16 02:31:24,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-16 02:31:24,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 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) [2021-10-16 02:31:24,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2021-10-16 02:31:24,590 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 12 [2021-10-16 02:31:24,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:24,590 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2021-10-16 02:31:24,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:24,591 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2021-10-16 02:31:24,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:31:24,592 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:24,592 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:24,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:24,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:24,823 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-16 02:31:24,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:24,826 INFO L82 PathProgramCache]: Analyzing trace with hash -254138953, now seen corresponding path program 1 times [2021-10-16 02:31:24,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:24,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705885897] [2021-10-16 02:31:24,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:24,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:24,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:24,829 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:24,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:31:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:24,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:31:24,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:25,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:25,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:25,470 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:25,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705885897] [2021-10-16 02:31:25,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705885897] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:25,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:25,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-16 02:31:25,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310150067] [2021-10-16 02:31:25,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:31:25,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:25,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:31:25,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:31:25,473 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 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) [2021-10-16 02:31:25,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:25,741 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-10-16 02:31:25,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:31:25,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 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 16 [2021-10-16 02:31:25,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:25,743 INFO L225 Difference]: With dead ends: 19 [2021-10-16 02:31:25,743 INFO L226 Difference]: Without dead ends: 19 [2021-10-16 02:31:25,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 306.5ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:31:25,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-16 02:31:25,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-16 02:31:25,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0) internal successors, (18), 18 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) [2021-10-16 02:31:25,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2021-10-16 02:31:25,747 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 16 [2021-10-16 02:31:25,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:25,747 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2021-10-16 02:31:25,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 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) [2021-10-16 02:31:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2021-10-16 02:31:25,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:31:25,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:25,748 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:25,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:25,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:25,949 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-16 02:31:25,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:25,950 INFO L82 PathProgramCache]: Analyzing trace with hash 585604346, now seen corresponding path program 1 times [2021-10-16 02:31:25,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:25,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183009142] [2021-10-16 02:31:25,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:25,951 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:25,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:25,951 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:25,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:31:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:31:26,073 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:31:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:31:26,136 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 02:31:26,137 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:31:26,138 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:31:26,140 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-16 02:31:26,141 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-16 02:31:26,141 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-16 02:31:26,141 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-16 02:31:26,141 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-16 02:31:26,141 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-16 02:31:26,142 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-16 02:31:26,142 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-16 02:31:26,142 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:31:26,142 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:31:26,143 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:31:26,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:26,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:26,350 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:31:26,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:31:26 BoogieIcfgContainer [2021-10-16 02:31:26,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:31:26,409 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:31:26,410 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:31:26,425 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:31:26,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:13" (3/4) ... [2021-10-16 02:31:26,430 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:31:26,430 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:31:26,441 INFO L168 Benchmark]: Toolchain (without parser) took 13942.39 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 34.2 MB in the beginning and 42.5 MB in the end (delta: -8.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:26,442 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 38.5 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:31:26,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 764.74 ms. Allocated memory is still 56.6 MB. Free memory was 34.0 MB in the beginning and 30.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:26,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.68 ms. Allocated memory is still 56.6 MB. Free memory was 30.7 MB in the beginning and 28.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:26,445 INFO L168 Benchmark]: Boogie Preprocessor took 71.09 ms. Allocated memory is still 56.6 MB. Free memory was 28.8 MB in the beginning and 27.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:26,448 INFO L168 Benchmark]: RCFGBuilder took 503.58 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 27.5 MB in the beginning and 54.6 MB in the end (delta: -27.1 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:26,450 INFO L168 Benchmark]: TraceAbstraction took 12486.25 ms. Allocated memory is still 79.7 MB. Free memory was 54.0 MB in the beginning and 43.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:26,451 INFO L168 Benchmark]: Witness Printer took 20.88 ms. Allocated memory is still 79.7 MB. Free memory was 43.2 MB in the beginning and 42.5 MB in the end (delta: 623.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:31:26,458 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 38.5 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 764.74 ms. Allocated memory is still 56.6 MB. Free memory was 34.0 MB in the beginning and 30.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.68 ms. Allocated memory is still 56.6 MB. Free memory was 30.7 MB in the beginning and 28.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.09 ms. Allocated memory is still 56.6 MB. Free memory was 28.8 MB in the beginning and 27.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 503.58 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 27.5 MB in the beginning and 54.6 MB in the end (delta: -27.1 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12486.25 ms. Allocated memory is still 79.7 MB. Free memory was 54.0 MB in the beginning and 43.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * Witness Printer took 20.88 ms. Allocated memory is still 79.7 MB. Free memory was 43.2 MB in the beginning and 42.5 MB in the end (delta: 623.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) [L566] return temp; [L569] struct node* s = alloc_node(); [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) [L566] return temp; [L570] s->next = alloc_node() [L571] EXPR s->next [L571] *s = *(s->next) [L572] free(s) [L572] free(s) [L572] free(s) [L573] return 0; - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 12356.1ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 17.4ms, AutomataDifference: 4320.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 26.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 39 SDtfs, 202 SDslu, 44 SDs, 0 SdLazy, 230 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 882.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 70 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 6592.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 41.7ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 52.6ms SsaConstructionTime, 148.7ms SatisfiabilityAnalysisTime, 5882.3ms InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 106 ConstructedInterpolants, 11 QuantifiedInterpolants, 948 SizeOfPredicates, 24 NumberOfNonLiveVariables, 208 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 02:31:26,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb55e0e-3067-43a5-b81d-49f0979179f1/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...