./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 134c0db99ce5251339642354d8ec6411765b7878 ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 134c0db99ce5251339642354d8ec6411765b7878 .................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:36:02,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:36:02,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:36:02,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:36:02,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:36:02,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:36:02,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:36:02,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:36:02,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:36:02,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:36:02,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:36:02,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:36:02,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:36:02,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:36:02,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:36:02,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:36:02,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:36:02,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:36:02,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:36:02,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:36:02,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:36:02,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:36:02,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:36:02,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:36:02,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:36:02,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:36:02,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:36:02,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:36:02,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:36:02,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:36:02,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:36:02,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:36:02,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:36:02,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:36:02,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:36:02,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:36:02,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:36:02,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:36:02,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:36:02,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:36:02,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:36:02,557 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-03 12:36:02,608 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:36:02,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:36:02,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:36:02,610 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:36:02,611 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:36:02,611 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:36:02,611 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:36:02,611 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:36:02,612 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:36:02,612 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:36:02,613 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:36:02,613 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:36:02,613 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:36:02,614 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:36:02,614 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:36:02,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-03 12:36:02,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-03 12:36:02,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:36:02,616 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:36:02,616 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 12:36:02,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:36:02,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:36:02,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:36:02,617 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-03 12:36:02,617 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-03 12:36:02,617 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-03 12:36:02,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:36:02,619 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:36:02,619 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:36:02,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:36:02,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:36:02,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:36:02,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:36:02,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:36:02,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:36:02,621 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:36:02,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:36:02,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:36:02,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:36:02,622 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 134c0db99ce5251339642354d8ec6411765b7878 [2020-12-03 12:36:02,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:36:02,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:36:02,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:36:02,918 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:36:02,921 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:36:02,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2020-12-03 12:36:03,010 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/data/4912b72cf/a56a292732764067bde2c0166fb8bf3a/FLAGb02a69c98 [2020-12-03 12:36:03,531 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:36:03,532 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2020-12-03 12:36:03,546 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/data/4912b72cf/a56a292732764067bde2c0166fb8bf3a/FLAGb02a69c98 [2020-12-03 12:36:03,847 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/data/4912b72cf/a56a292732764067bde2c0166fb8bf3a [2020-12-03 12:36:03,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:36:03,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:36:03,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:36:03,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:36:03,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:36:03,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:36:03" (1/1) ... [2020-12-03 12:36:03,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df5dbd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:03, skipping insertion in model container [2020-12-03 12:36:03,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:36:03" (1/1) ... [2020-12-03 12:36:03,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:36:03,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:36:04,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:36:04,277 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) [2020-12-03 12:36:04,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@109edcd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:04, skipping insertion in model container [2020-12-03 12:36:04,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:36:04,278 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-03 12:36:04,280 INFO L168 Benchmark]: Toolchain (without parser) took 428.58 ms. Allocated memory is still 100.7 MB. Free memory was 66.3 MB in the beginning and 77.0 MB in the end (delta: -10.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:36:04,281 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 72.1 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:36:04,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 423.12 ms. Allocated memory is still 100.7 MB. Free memory was 66.2 MB in the beginning and 77.0 MB in the end (delta: -10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:36:04,284 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 72.1 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 423.12 ms. Allocated memory is still 100.7 MB. Free memory was 66.2 MB in the beginning and 77.0 MB in the end (delta: -10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 535]: 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 0.2.0-7b2dab5 [2020-12-03 12:36:06,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:36:06,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:36:06,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:36:06,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:36:06,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:36:06,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:36:06,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:36:06,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:36:06,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:36:06,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:36:06,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:36:06,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:36:06,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:36:06,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:36:06,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:36:06,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:36:06,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:36:06,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:36:06,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:36:06,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:36:06,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:36:06,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:36:06,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:36:06,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:36:06,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:36:06,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:36:06,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:36:06,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:36:06,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:36:06,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:36:06,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:36:06,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:36:06,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:36:06,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:36:06,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:36:06,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:36:06,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:36:06,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:36:06,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:36:06,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:36:06,727 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-03 12:36:06,774 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:36:06,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:36:06,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:36:06,776 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:36:06,777 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:36:06,777 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:36:06,777 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:36:06,777 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:36:06,777 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:36:06,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-03 12:36:06,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-03 12:36:06,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:36:06,781 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:36:06,781 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 12:36:06,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:36:06,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:36:06,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:36:06,782 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-03 12:36:06,782 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-03 12:36:06,783 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-03 12:36:06,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:36:06,783 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:36:06,783 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-03 12:36:06,783 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-03 12:36:06,784 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:36:06,784 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:36:06,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:36:06,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-03 12:36:06,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:36:06,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:36:06,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:36:06,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:36:06,785 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-03 12:36:06,786 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-03 12:36:06,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:36:06,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:36:06,804 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-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 134c0db99ce5251339642354d8ec6411765b7878 [2020-12-03 12:36:07,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:36:07,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:36:07,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:36:07,271 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:36:07,273 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:36:07,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2020-12-03 12:36:07,357 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/data/f98e9dee9/0dbdb11342e14f2d9442e337217cb597/FLAG0f09a9b05 [2020-12-03 12:36:08,066 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:36:08,067 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2020-12-03 12:36:08,081 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/data/f98e9dee9/0dbdb11342e14f2d9442e337217cb597/FLAG0f09a9b05 [2020-12-03 12:36:08,321 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/data/f98e9dee9/0dbdb11342e14f2d9442e337217cb597 [2020-12-03 12:36:08,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:36:08,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:36:08,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:36:08,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:36:08,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:36:08,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:36:08" (1/1) ... [2020-12-03 12:36:08,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf1d358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:08, skipping insertion in model container [2020-12-03 12:36:08,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:36:08" (1/1) ... [2020-12-03 12:36:08,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:36:08,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:36:08,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:36:08,787 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-03 12:36:08,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:36:08,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:36:08,836 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:36:08,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:36:08,958 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:36:08,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:08 WrapperNode [2020-12-03 12:36:08,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:36:08,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:36:08,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:36:08,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:36:08,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:08" (1/1) ... [2020-12-03 12:36:09,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:08" (1/1) ... [2020-12-03 12:36:09,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:36:09,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:36:09,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:36:09,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:36:09,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:08" (1/1) ... [2020-12-03 12:36:09,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:08" (1/1) ... [2020-12-03 12:36:09,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:08" (1/1) ... [2020-12-03 12:36:09,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:08" (1/1) ... [2020-12-03 12:36:09,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:08" (1/1) ... [2020-12-03 12:36:09,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:08" (1/1) ... [2020-12-03 12:36:09,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:08" (1/1) ... [2020-12-03 12:36:09,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:36:09,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:36:09,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:36:09,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:36:09,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:36:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-03 12:36:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:36:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-03 12:36:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-03 12:36:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:36:09,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:36:09,939 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:36:09,940 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-03 12:36:09,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:36:09 BoogieIcfgContainer [2020-12-03 12:36:09,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:36:09,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:36:09,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:36:09,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:36:09,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:36:08" (1/3) ... [2020-12-03 12:36:09,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a548950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:36:09, skipping insertion in model container [2020-12-03 12:36:09,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:08" (2/3) ... [2020-12-03 12:36:09,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a548950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:36:09, skipping insertion in model container [2020-12-03 12:36:09,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:36:09" (3/3) ... [2020-12-03 12:36:09,967 INFO L111 eAbstractionObserver]: Analyzing ICFG knapsack_alloca_unsafe.i [2020-12-03 12:36:09,981 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:36:09,985 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 27 error locations. [2020-12-03 12:36:09,996 INFO L253 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2020-12-03 12:36:10,016 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:36:10,016 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-03 12:36:10,016 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:36:10,016 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:36:10,017 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:36:10,017 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:36:10,017 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:36:10,017 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:36:10,030 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-12-03 12:36:10,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-03 12:36:10,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:10,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:10,037 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-03 12:36:10,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:10,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2020-12-03 12:36:10,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:36:10,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104829325] [2020-12-03 12:36:10,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-03 12:36:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:10,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-03 12:36:10,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:36:10,421 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 18 [2020-12-03 12:36:10,423 INFO L348 Elim1Store]: treesize reduction 93, result has 20.5 percent of original size [2020-12-03 12:36:10,424 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 47 [2020-12-03 12:36:10,443 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-03 12:36:10,479 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-03 12:36:10,512 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-03 12:36:10,520 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:37 [2020-12-03 12:36:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:10,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:36:10,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104829325] [2020-12-03 12:36:10,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:10,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:36:10,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503403922] [2020-12-03 12:36:10,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:36:10,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:36:10,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:36:10,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:36:10,642 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-12-03 12:36:10,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:10,953 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2020-12-03 12:36:10,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:36:10,955 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-03 12:36:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:10,964 INFO L225 Difference]: With dead ends: 64 [2020-12-03 12:36:10,964 INFO L226 Difference]: Without dead ends: 62 [2020-12-03 12:36:10,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:36:10,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-03 12:36:10,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-12-03 12:36:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-03 12:36:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2020-12-03 12:36:10,999 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 7 [2020-12-03 12:36:10,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:10,999 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2020-12-03 12:36:11,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:36:11,000 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2020-12-03 12:36:11,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-03 12:36:11,000 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:11,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:11,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-03 12:36:11,209 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-03 12:36:11,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:11,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2020-12-03 12:36:11,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:36:11,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821515946] [2020-12-03 12:36:11,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-03 12:36:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:11,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-03 12:36:11,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:36:11,315 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_32|], 4=[|v_#valid_43|]} [2020-12-03 12:36:11,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-03 12:36:11,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-03 12:36:11,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-03 12:36:11,393 INFO L348 Elim1Store]: treesize reduction 42, result has 27.6 percent of original size [2020-12-03 12:36:11,395 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 21 [2020-12-03 12:36:11,408 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-03 12:36:11,449 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-03 12:36:11,480 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-03 12:36:11,481 INFO L382 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 23 treesize of output 27 [2020-12-03 12:36:11,488 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-03 12:36:11,523 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-03 12:36:11,533 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-03 12:36:11,534 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:41, output treesize:47 [2020-12-03 12:36:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:11,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:36:11,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821515946] [2020-12-03 12:36:11,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:11,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:36:11,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969447731] [2020-12-03 12:36:11,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:36:11,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:36:11,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:36:11,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:36:11,688 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 5 states. [2020-12-03 12:36:12,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:12,646 INFO L93 Difference]: Finished difference Result 187 states and 205 transitions. [2020-12-03 12:36:12,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:36:12,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-03 12:36:12,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:12,649 INFO L225 Difference]: With dead ends: 187 [2020-12-03 12:36:12,649 INFO L226 Difference]: Without dead ends: 187 [2020-12-03 12:36:12,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:36:12,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-12-03 12:36:12,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 66. [2020-12-03 12:36:12,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-03 12:36:12,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-12-03 12:36:12,661 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 7 [2020-12-03 12:36:12,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:12,661 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-12-03 12:36:12,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:36:12,662 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-12-03 12:36:12,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-03 12:36:12,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:12,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:12,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-03 12:36:12,878 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-03 12:36:12,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:12,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1805088679, now seen corresponding path program 1 times [2020-12-03 12:36:12,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:36:12,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212415022] [2020-12-03 12:36:12,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-03 12:36:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:12,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-03 12:36:12,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:36:12,985 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_33|], 9=[|v_#valid_44|]} [2020-12-03 12:36:12,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-03 12:36:12,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-03 12:36:12,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-03 12:36:12,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-03 12:36:13,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-03 12:36:13,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-03 12:36:13,012 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 25 [2020-12-03 12:36:13,015 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-03 12:36:13,067 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-03 12:36:13,127 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-03 12:36:13,128 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 58 [2020-12-03 12:36:13,135 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-03 12:36:13,191 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-03 12:36:13,205 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-12-03 12:36:13,205 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:59, output treesize:59 [2020-12-03 12:36:13,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:13,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 12:36:13,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212415022] [2020-12-03 12:36:13,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:13,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:36:13,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623730582] [2020-12-03 12:36:13,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:36:13,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-03 12:36:13,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:36:13,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:36:13,303 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 4 states. [2020-12-03 12:36:14,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:14,007 INFO L93 Difference]: Finished difference Result 132 states and 145 transitions. [2020-12-03 12:36:14,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:36:14,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-03 12:36:14,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:14,009 INFO L225 Difference]: With dead ends: 132 [2020-12-03 12:36:14,009 INFO L226 Difference]: Without dead ends: 132 [2020-12-03 12:36:14,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:36:14,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-03 12:36:14,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 66. [2020-12-03 12:36:14,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-03 12:36:14,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-12-03 12:36:14,018 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 7 [2020-12-03 12:36:14,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:14,019 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-12-03 12:36:14,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:36:14,019 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-12-03 12:36:14,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-03 12:36:14,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:14,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:14,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-03 12:36:14,227 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-03 12:36:14,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:14,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2020-12-03 12:36:14,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-03 12:36:14,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423281878] [2020-12-03 12:36:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-03 12:36:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:36:14,284 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:36:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:36:14,307 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:36:14,349 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-03 12:36:14,353 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 12:36:14,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-03 12:36:14,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:36:14 BoogieIcfgContainer [2020-12-03 12:36:14,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:36:14,583 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:36:14,583 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:36:14,584 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:36:14,584 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:36:09" (3/4) ... [2020-12-03 12:36:14,586 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-03 12:36:14,654 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_92848919-14e7-423b-b18d-c1923ee83c26/bin/utaipan/witness.graphml [2020-12-03 12:36:14,658 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:36:14,660 INFO L168 Benchmark]: Toolchain (without parser) took 6334.62 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 47.1 MB in the beginning and 81.3 MB in the end (delta: -34.2 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. [2020-12-03 12:36:14,661 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 81.8 MB. Free memory is still 64.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:36:14,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 622.69 ms. Allocated memory is still 81.8 MB. Free memory was 47.0 MB in the beginning and 41.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:36:14,662 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.22 ms. Allocated memory is still 81.8 MB. Free memory was 41.9 MB in the beginning and 39.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:36:14,663 INFO L168 Benchmark]: Boogie Preprocessor took 46.00 ms. Allocated memory is still 81.8 MB. Free memory was 39.8 MB in the beginning and 38.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:36:14,664 INFO L168 Benchmark]: RCFGBuilder took 861.97 ms. Allocated memory is still 81.8 MB. Free memory was 38.0 MB in the beginning and 34.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-12-03 12:36:14,664 INFO L168 Benchmark]: TraceAbstraction took 4637.56 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 34.3 MB in the beginning and 34.2 MB in the end (delta: 147.1 kB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2020-12-03 12:36:14,665 INFO L168 Benchmark]: Witness Printer took 75.47 ms. Allocated memory is still 100.7 MB. Free memory was 34.2 MB in the beginning and 81.3 MB in the end (delta: -47.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:36:14,671 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 81.8 MB. Free memory is still 64.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 622.69 ms. Allocated memory is still 81.8 MB. Free memory was 47.0 MB in the beginning and 41.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.22 ms. Allocated memory is still 81.8 MB. Free memory was 41.9 MB in the beginning and 39.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.00 ms. Allocated memory is still 81.8 MB. Free memory was 39.8 MB in the beginning and 38.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 861.97 ms. Allocated memory is still 81.8 MB. Free memory was 38.0 MB in the beginning and 34.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4637.56 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 34.3 MB in the beginning and 34.2 MB in the end (delta: 147.1 kB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. * Witness Printer took 75.47 ms. Allocated memory is still 100.7 MB. Free memory was 34.2 MB in the beginning and 81.3 MB in the end (delta: -47.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 542]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L527] int N = __VERIFIER_nondet_int(); [L528] int M = __VERIFIER_nondet_int(); [L529] COND FALSE !(N < 1) [L532] COND TRUE M < 1 [L533] M = 1 [L535] int *size = (int*) __builtin_alloca (N * sizeof(int)); [L536] int *val = (int*) __builtin_alloca (N * sizeof(int)); [L537] int *cost = (int*) __builtin_alloca (M * sizeof(int)); [L538] int *best = (int*) __builtin_alloca (M * sizeof(int)); [L540] int i = 0; [L540] COND TRUE i < N [L542] size[i] = __VERIFIER_nondet_int() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 65 locations, 27 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 269 SDtfs, 285 SDslu, 322 SDs, 0 SdLazy, 197 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=2, 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, 3 MinimizatonAttempts, 187 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 18 ConstructedInterpolants, 6 QuantifiedInterpolants, 1740 SizeOfPredicates, 18 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...