./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 ................................................................................................................................... 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_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:52:11,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:52:11,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:52:11,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:52:11,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:52:11,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:52:11,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:52:11,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:52:11,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:52:11,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:52:11,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:52:11,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:52:11,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:52:11,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:52:11,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:52:11,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:52:11,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:52:11,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:52:11,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:52:11,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:52:11,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:52:11,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:52:11,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:52:11,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:52:11,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:52:11,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:52:11,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:52:11,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:52:11,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:52:11,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:52:11,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:52:11,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:52:11,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:52:11,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:52:11,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:52:11,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:52:11,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:52:11,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:52:11,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:52:11,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:52:11,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:52:11,536 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 22:52:11,575 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:52:11,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:52:11,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:52:11,576 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:52:11,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:52:11,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:52:11,577 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:52:11,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:52:11,577 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:52:11,577 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:52:11,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:52:11,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:52:11,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:52:11,578 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 22:52:11,578 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 22:52:11,578 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 22:52:11,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:52:11,579 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 22:52:11,579 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:52:11,579 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:52:11,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:52:11,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:52:11,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:52:11,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:52:11,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:52:11,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:52:11,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:52:11,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:52:11,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:52:11,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2021-10-28 22:52:11,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:52:11,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:52:11,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:52:11,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:52:11,973 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:52:11,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-28 22:52:12,054 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/data/49d82c6e0/6dd74b2eb6714c56b6628479bf25c71c/FLAGe44752ce4 [2021-10-28 22:52:12,787 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:52:12,787 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-28 22:52:12,813 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/data/49d82c6e0/6dd74b2eb6714c56b6628479bf25c71c/FLAGe44752ce4 [2021-10-28 22:52:13,009 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/data/49d82c6e0/6dd74b2eb6714c56b6628479bf25c71c [2021-10-28 22:52:13,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:52:13,013 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 22:52:13,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:52:13,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:52:13,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:52:13,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:52:13" (1/1) ... [2021-10-28 22:52:13,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b4456a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:13, skipping insertion in model container [2021-10-28 22:52:13,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:52:13" (1/1) ... [2021-10-28 22:52:13,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:52:13,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:52:13,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:52:13,366 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) [2021-10-28 22:52:13,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@32a4db71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:13, skipping insertion in model container [2021-10-28 22:52:13,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:52:13,367 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-28 22:52:13,370 INFO L168 Benchmark]: Toolchain (without parser) took 355.45 ms. Allocated memory was 86.0 MB in the beginning and 123.7 MB in the end (delta: 37.7 MB). Free memory was 62.1 MB in the beginning and 92.9 MB in the end (delta: -30.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:52:13,371 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 60.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:52:13,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.08 ms. Allocated memory was 86.0 MB in the beginning and 123.7 MB in the end (delta: 37.7 MB). Free memory was 62.0 MB in the beginning and 92.9 MB in the end (delta: -30.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:52:13,375 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 60.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.08 ms. Allocated memory was 86.0 MB in the beginning and 123.7 MB in the end (delta: 37.7 MB). Free memory was 62.0 MB in the beginning and 92.9 MB in the end (delta: -30.9 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-b2eff8b [2021-10-28 22:52:15,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:52:15,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:52:15,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:52:15,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:52:15,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:52:15,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:52:15,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:52:15,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:52:15,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:52:15,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:52:15,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:52:15,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:52:15,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:52:15,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:52:15,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:52:15,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:52:15,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:52:15,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:52:15,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:52:15,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:52:15,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:52:15,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:52:15,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:52:15,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:52:15,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:52:15,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:52:15,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:52:15,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:52:15,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:52:15,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:52:15,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:52:15,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:52:15,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:52:15,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:52:15,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:52:15,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:52:15,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:52:15,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:52:15,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:52:15,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:52:15,862 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 22:52:15,909 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:52:15,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:52:15,910 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:52:15,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:52:15,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:52:15,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:52:15,914 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:52:15,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:52:15,914 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:52:15,914 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:52:15,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:52:15,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:52:15,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:52:15,916 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 22:52:15,917 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 22:52:15,917 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 22:52:15,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:52:15,918 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 22:52:15,918 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 22:52:15,918 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 22:52:15,918 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:52:15,919 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:52:15,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:52:15,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:52:15,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:52:15,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:52:15,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:52:15,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:52:15,921 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 22:52:15,921 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 22:52:15,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:52:15,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 22:52:15,922 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_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2021-10-28 22:52:16,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:52:16,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:52:16,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:52:16,372 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:52:16,373 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:52:16,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-28 22:52:16,461 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/data/b057b85aa/721f5eb9b6b941cfb5fa7e7a7871c10b/FLAG51f0e6e91 [2021-10-28 22:52:17,013 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:52:17,014 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-28 22:52:17,042 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/data/b057b85aa/721f5eb9b6b941cfb5fa7e7a7871c10b/FLAG51f0e6e91 [2021-10-28 22:52:17,333 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/data/b057b85aa/721f5eb9b6b941cfb5fa7e7a7871c10b [2021-10-28 22:52:17,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:52:17,337 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 22:52:17,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:52:17,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:52:17,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:52:17,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:52:17" (1/1) ... [2021-10-28 22:52:17,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@422e611c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:17, skipping insertion in model container [2021-10-28 22:52:17,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:52:17" (1/1) ... [2021-10-28 22:52:17,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:52:17,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:52:17,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:52:17,744 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-28 22:52:17,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:52:17,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:52:17,813 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:52:17,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:52:17,908 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:52:17,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:17 WrapperNode [2021-10-28 22:52:17,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:52:17,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:52:17,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:52:17,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:52:17,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:17" (1/1) ... [2021-10-28 22:52:17,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:17" (1/1) ... [2021-10-28 22:52:17,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:17" (1/1) ... [2021-10-28 22:52:17,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:17" (1/1) ... [2021-10-28 22:52:17,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:17" (1/1) ... [2021-10-28 22:52:17,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:17" (1/1) ... [2021-10-28 22:52:18,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:17" (1/1) ... [2021-10-28 22:52:18,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:52:18,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:52:18,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:52:18,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:52:18,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:17" (1/1) ... [2021-10-28 22:52:18,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:52:18,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:18,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:18,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:52:18,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 22:52:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:52:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 22:52:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 22:52:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 22:52:18,104 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 22:52:18,105 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2021-10-28 22:52:18,105 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 22:52:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 22:52:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 22:52:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 22:52:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 22:52:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 22:52:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 22:52:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 22:52:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 22:52:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 22:52:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 22:52:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 22:52:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 22:52:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 22:52:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 22:52:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 22:52:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 22:52:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 22:52:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 22:52:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 22:52:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 22:52:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 22:52:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 22:52:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 22:52:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 22:52:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 22:52:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 22:52:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 22:52:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 22:52:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 22:52:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 22:52:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 22:52:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 22:52:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 22:52:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 22:52:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 22:52:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 22:52:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 22:52:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 22:52:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 22:52:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 22:52:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 22:52:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 22:52:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 22:52:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 22:52:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 22:52:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 22:52:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 22:52:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 22:52:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 22:52:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 22:52:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 22:52:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 22:52:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 22:52:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 22:52:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 22:52:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 22:52:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 22:52:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 22:52:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 22:52:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 22:52:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 22:52:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 22:52:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 22:52:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 22:52:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 22:52:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 22:52:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 22:52:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 22:52:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 22:52:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 22:52:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 22:52:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 22:52:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 22:52:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 22:52:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 22:52:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 22:52:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 22:52:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 22:52:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 22:52:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 22:52:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 22:52:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 22:52:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 22:52:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 22:52:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 22:52:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 22:52:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 22:52:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 22:52:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 22:52:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 22:52:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 22:52:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 22:52:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 22:52:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 22:52:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 22:52:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 22:52:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 22:52:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 22:52:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 22:52:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 22:52:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 22:52:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 22:52:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 22:52:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 22:52:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 22:52:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 22:52:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2021-10-28 22:52:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 22:52:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 22:52:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 22:52:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 22:52:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:52:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 22:52:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:52:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 22:52:18,493 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 22:52:18,640 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:52:18,640 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-28 22:52:18,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:52:18 BoogieIcfgContainer [2021-10-28 22:52:18,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:52:18,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:52:18,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:52:18,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:52:18,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:52:17" (1/3) ... [2021-10-28 22:52:18,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0c6887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:52:18, skipping insertion in model container [2021-10-28 22:52:18,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:17" (2/3) ... [2021-10-28 22:52:18,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0c6887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:52:18, skipping insertion in model container [2021-10-28 22:52:18,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:52:18" (3/3) ... [2021-10-28 22:52:18,664 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2021-10-28 22:52:18,670 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:52:18,670 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-10-28 22:52:18,727 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:52:18,735 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 22:52:18,735 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-28 22:52:18,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 20 states have (on average 1.65) internal successors, (33), 32 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 22:52:18,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 22:52:18,766 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:52:18,767 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:18,768 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-28 22:52:18,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:18,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1580649199, now seen corresponding path program 1 times [2021-10-28 22:52:18,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:52:18,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584408737] [2021-10-28 22:52:18,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:18,801 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:52:18,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:52:18,804 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:52:18,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 22:52:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:18,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 22:52:19,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:52:19,108 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 [2021-10-28 22:52:19,375 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 22:52:19,375 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 21 treesize of output 26 [2021-10-28 22:52:19,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:19,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:52:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:19,943 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:52:19,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584408737] [2021-10-28 22:52:19,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584408737] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 22:52:19,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:52:19,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-10-28 22:52:19,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352905005] [2021-10-28 22:52:19,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 22:52:19,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:52:19,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 22:52:19,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:52:19,971 INFO L87 Difference]: Start difference. First operand has 41 states, 20 states have (on average 1.65) internal successors, (33), 32 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 22:52:20,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:52:20,506 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-10-28 22:52:20,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 22:52:20,508 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2021-10-28 22:52:20,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:52:20,515 INFO L225 Difference]: With dead ends: 38 [2021-10-28 22:52:20,515 INFO L226 Difference]: Without dead ends: 32 [2021-10-28 22:52:20,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-28 22:52:20,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-28 22:52:20,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-28 22:52:20,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 17 states have (on average 1.411764705882353) internal successors, (24), 24 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 22:52:20,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-10-28 22:52:20,552 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 19 [2021-10-28 22:52:20,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:52:20,554 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-10-28 22:52:20,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 22:52:20,554 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-10-28 22:52:20,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 22:52:20,556 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:52:20,556 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:20,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:20,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:52:20,767 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-28 22:52:20,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:20,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1580649198, now seen corresponding path program 1 times [2021-10-28 22:52:20,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:52:20,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226185608] [2021-10-28 22:52:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:20,770 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:52:20,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:52:20,771 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:52:20,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 22:52:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:20,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 22:52:20,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:52:20,949 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 [2021-10-28 22:52:20,958 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 [2021-10-28 22:52:21,299 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 22:52:21,300 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 36 treesize of output 38 [2021-10-28 22:52:21,311 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 22:52:21,312 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 35 treesize of output 35 [2021-10-28 22:52:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:21,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:52:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:41,749 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:52:41,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226185608] [2021-10-28 22:52:41,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226185608] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 22:52:41,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:52:41,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-28 22:52:41,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908475017] [2021-10-28 22:52:41,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 22:52:41,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:52:41,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 22:52:41,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=196, Unknown=6, NotChecked=0, Total=240 [2021-10-28 22:52:41,753 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 22:53:14,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:14,995 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-10-28 22:53:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 22:53:14,996 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 19 [2021-10-28 22:53:14,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:14,998 INFO L225 Difference]: With dead ends: 27 [2021-10-28 22:53:14,998 INFO L226 Difference]: Without dead ends: 27 [2021-10-28 22:53:14,999 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=75, Invalid=337, Unknown=8, NotChecked=0, Total=420 [2021-10-28 22:53:14,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-28 22:53:15,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-28 22:53:15,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 20 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 22:53:15,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-10-28 22:53:15,004 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 19 [2021-10-28 22:53:15,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:15,005 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-10-28 22:53:15,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 22:53:15,005 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-10-28 22:53:15,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 22:53:15,006 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:15,006 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:15,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:15,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:53:15,221 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-28 22:53:15,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:15,221 INFO L85 PathProgramCache]: Analyzing trace with hash 901162851, now seen corresponding path program 1 times [2021-10-28 22:53:15,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:53:15,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232055630] [2021-10-28 22:53:15,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:15,223 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:53:15,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:53:15,226 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:53:15,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 22:53:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:15,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 22:53:15,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:15,410 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 [2021-10-28 22:53:15,474 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 21 treesize of output 17 [2021-10-28 22:53:15,509 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 21 treesize of output 13 [2021-10-28 22:53:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:53:15,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:53:15,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:53:15,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:53:15,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232055630] [2021-10-28 22:53:15,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232055630] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:15,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:15,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-28 22:53:15,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817737827] [2021-10-28 22:53:15,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:53:15,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:53:15,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:53:15,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:53:15,684 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 22:53:15,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:15,906 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-10-28 22:53:15,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 22:53:15,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2021-10-28 22:53:15,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:15,908 INFO L225 Difference]: With dead ends: 26 [2021-10-28 22:53:15,908 INFO L226 Difference]: Without dead ends: 26 [2021-10-28 22:53:15,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:53:15,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-28 22:53:15,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-28 22:53:15,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 22:53:15,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-10-28 22:53:15,912 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 22 [2021-10-28 22:53:15,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:15,913 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-10-28 22:53:15,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 22:53:15,913 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-10-28 22:53:15,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 22:53:15,914 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:15,914 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:15,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:16,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:53:16,127 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-28 22:53:16,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:16,127 INFO L85 PathProgramCache]: Analyzing trace with hash 901162852, now seen corresponding path program 1 times [2021-10-28 22:53:16,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:53:16,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178711131] [2021-10-28 22:53:16,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:16,128 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:53:16,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:53:16,129 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:53:16,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 22:53:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:16,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 22:53:16,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:16,333 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 [2021-10-28 22:53:16,444 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 [2021-10-28 22:53:16,454 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 [2021-10-28 22:53:16,513 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 [2021-10-28 22:53:16,518 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 [2021-10-28 22:53:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:53:16,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:53:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:53:17,141 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:53:17,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178711131] [2021-10-28 22:53:17,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178711131] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:17,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:17,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-28 22:53:17,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135117279] [2021-10-28 22:53:17,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 22:53:17,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:53:17,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:53:17,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:53:17,144 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 22:53:17,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:17,561 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-28 22:53:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 22:53:17,561 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 22 [2021-10-28 22:53:17,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:17,562 INFO L225 Difference]: With dead ends: 25 [2021-10-28 22:53:17,562 INFO L226 Difference]: Without dead ends: 25 [2021-10-28 22:53:17,563 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-28 22:53:17,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-28 22:53:17,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-28 22:53:17,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 22:53:17,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-10-28 22:53:17,566 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2021-10-28 22:53:17,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:17,567 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-10-28 22:53:17,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 22:53:17,567 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-10-28 22:53:17,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 22:53:17,568 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:17,568 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:17,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:17,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:53:17,782 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr9ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-28 22:53:17,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:17,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1584820282, now seen corresponding path program 1 times [2021-10-28 22:53:17,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:53:17,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039469796] [2021-10-28 22:53:17,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:17,783 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:53:17,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:53:17,784 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:53:17,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 22:53:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:17,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 22:53:17,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:18,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:53:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:53:18,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:53:18,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039469796] [2021-10-28 22:53:18,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039469796] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 22:53:18,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:53:18,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-10-28 22:53:18,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771113327] [2021-10-28 22:53:18,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 22:53:18,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:53:18,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:53:18,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:53:18,663 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-28 22:53:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:18,964 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-28 22:53:18,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:53:18,965 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 26 [2021-10-28 22:53:18,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:18,966 INFO L225 Difference]: With dead ends: 25 [2021-10-28 22:53:18,966 INFO L226 Difference]: Without dead ends: 25 [2021-10-28 22:53:18,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:53:18,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-28 22:53:18,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-10-28 22:53:18,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 22:53:18,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-10-28 22:53:18,970 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 26 [2021-10-28 22:53:18,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:18,971 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-10-28 22:53:18,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-28 22:53:18,971 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-10-28 22:53:18,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 22:53:18,972 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:18,972 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:18,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-28 22:53:19,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:53:19,186 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr11ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-28 22:53:19,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:19,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1701102057, now seen corresponding path program 1 times [2021-10-28 22:53:19,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:53:19,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480301420] [2021-10-28 22:53:19,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:19,187 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:53:19,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:53:19,188 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:53:19,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 22:53:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:19,383 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:19,456 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 22:53:19,457 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 22:53:19,458 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr11ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 22:53:19,459 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 22:53:19,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 22:53:19,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 22:53:19,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 22:53:19,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 22:53:19,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 22:53:19,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 22:53:19,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 22:53:19,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:53:19,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:53:19,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:53:19,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:19,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:53:19,665 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-28 22:53:19,668 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:53:19,675 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 22:53:19,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:53:19 BoogieIcfgContainer [2021-10-28 22:53:19,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:53:19,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:53:19,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:53:19,701 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:53:19,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:52:18" (3/4) ... [2021-10-28 22:53:19,704 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 22:53:19,706 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:53:19,707 INFO L168 Benchmark]: Toolchain (without parser) took 62369.70 ms. Allocated memory was 58.7 MB in the beginning and 92.3 MB in the end (delta: 33.6 MB). Free memory was 35.7 MB in the beginning and 30.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:53:19,714 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 58.7 MB. Free memory is still 39.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:53:19,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.88 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.4 MB in the beginning and 46.8 MB in the end (delta: -11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:53:19,715 INFO L168 Benchmark]: Boogie Preprocessor took 105.13 ms. Allocated memory is still 71.3 MB. Free memory was 46.6 MB in the beginning and 44.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:53:19,716 INFO L168 Benchmark]: RCFGBuilder took 627.57 ms. Allocated memory is still 71.3 MB. Free memory was 44.1 MB in the beginning and 42.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:53:19,716 INFO L168 Benchmark]: TraceAbstraction took 61053.56 ms. Allocated memory was 71.3 MB in the beginning and 92.3 MB in the end (delta: 21.0 MB). Free memory was 42.1 MB in the beginning and 30.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. [2021-10-28 22:53:19,717 INFO L168 Benchmark]: Witness Printer took 6.05 ms. Allocated memory is still 92.3 MB. Free memory is still 30.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:53:19,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 58.7 MB. Free memory is still 39.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 567.88 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.4 MB in the beginning and 46.8 MB in the end (delta: -11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 105.13 ms. Allocated memory is still 71.3 MB. Free memory was 46.6 MB in the beginning and 44.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 627.57 ms. Allocated memory is still 71.3 MB. Free memory was 44.1 MB in the beginning and 42.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 61053.56 ms. Allocated memory was 71.3 MB in the beginning and 92.3 MB in the end (delta: 21.0 MB). Free memory was 42.1 MB in the beginning and 30.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. * Witness Printer took 6.05 ms. Allocated memory is still 92.3 MB. Free memory is still 30.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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: [L569] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={5:0}] [L566] return temp; VAL [\result={5:0}, temp={5:0}] [L569] RET, EXPR alloc_node() VAL [alloc_node()={5:0}] [L569] struct node* s = alloc_node(); [L570] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={6:0}] [L566] return temp; VAL [\result={6:0}, temp={6:0}] [L570] RET, EXPR alloc_node() VAL [alloc_node()={6:0}, s={5:0}] [L570] s->next = alloc_node() VAL [alloc_node()={6:0}, s={5:0}] [L571] EXPR s->next VAL [s={5:0}, s->next={6:0}] [L571] *s = *(s->next) VAL [*s = *(s->next)={0:0}, s={5:0}, s->next={6:0}] [L572] free(s) VAL [s={5:0}] [L572] free(s) VAL [s={5:0}] [L572] free(s) [L573] return 0; VAL [\result=0, s={5:0}] - 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 8 procedures, 54 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 60.9s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 34.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 110 SDslu, 336 SDs, 0 SdLazy, 556 SolverSat, 47 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 25.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 229 GetRequests, 156 SyntacticMatches, 9 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 27.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 23.6s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 206 ConstructedInterpolants, 30 QuantifiedInterpolants, 1656 SizeOfPredicates, 21 NumberOfNonLiveVariables, 373 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 26/50 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 [2021-10-28 22:53:19,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75e0d9b-0848-4a9e-b29b-a74051c4afbc/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...