./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 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8 --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 e4298ca4b283086df2e0e2f17b814348cf7ca285d4c19f0d8a4923f1c5d9a834 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:24:20,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:24:20,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:24:20,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:24:20,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:24:20,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:24:20,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:24:20,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:24:20,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:24:20,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:24:20,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:24:20,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:24:20,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:24:20,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:24:20,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:24:20,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:24:20,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:24:20,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:24:20,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:24:20,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:24:21,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:24:21,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:24:21,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:24:21,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:24:21,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:24:21,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:24:21,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:24:21,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:24:21,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:24:21,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:24:21,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:24:21,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:24:21,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:24:21,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:24:21,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:24:21,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:24:21,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:24:21,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:24:21,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:24:21,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:24:21,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:24:21,033 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 01:24:21,074 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:24:21,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:24:21,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:24:21,075 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:24:21,075 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:24:21,075 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:24:21,075 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:24:21,076 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:24:21,076 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:24:21,076 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:24:21,076 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:24:21,076 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:24:21,076 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:24:21,077 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:24:21,077 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:24:21,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:24:21,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:24:21,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:24:21,078 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:24:21,078 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:24:21,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:24:21,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:24:21,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:24:21,079 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:24:21,079 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:24:21,079 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:24:21,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:24:21,080 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:24:21,080 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:24:21,080 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:24:21,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:24:21,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:24:21,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:24:21,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:24:21,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:24:21,081 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:24:21,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:24:21,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:24:21,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:24:21,082 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4298ca4b283086df2e0e2f17b814348cf7ca285d4c19f0d8a4923f1c5d9a834 [2021-11-07 01:24:21,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:24:21,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:24:21,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:24:21,355 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:24:21,355 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:24:21,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2021-11-07 01:24:21,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/data/021d9300c/0f9384df606e450586fe4812be9f362b/FLAG3d18c9ff7 [2021-11-07 01:24:21,981 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:24:21,982 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2021-11-07 01:24:21,995 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/data/021d9300c/0f9384df606e450586fe4812be9f362b/FLAG3d18c9ff7 [2021-11-07 01:24:22,313 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/data/021d9300c/0f9384df606e450586fe4812be9f362b [2021-11-07 01:24:22,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:24:22,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:24:22,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:24:22,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:24:22,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:24:22,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:24:22" (1/1) ... [2021-11-07 01:24:22,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c1d8e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:22, skipping insertion in model container [2021-11-07 01:24:22,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:24:22" (1/1) ... [2021-11-07 01:24:22,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:24:22,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:24:22,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:24:22,700 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) [2021-11-07 01:24:22,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@711a7b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:22, skipping insertion in model container [2021-11-07 01:24:22,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:24:22,702 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:24:22,704 INFO L168 Benchmark]: Toolchain (without parser) took 384.62 ms. Allocated memory is still 109.1 MB. Free memory was 69.5 MB in the beginning and 82.9 MB in the end (delta: -13.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:24:22,705 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 109.1 MB. Free memory was 87.2 MB in the beginning and 87.2 MB in the end (delta: 66.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:24:22,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.85 ms. Allocated memory is still 109.1 MB. Free memory was 69.3 MB in the beginning and 82.9 MB in the end (delta: -13.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:24:22,707 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 109.1 MB. Free memory was 87.2 MB in the beginning and 87.2 MB in the end (delta: 66.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 381.85 ms. Allocated memory is still 109.1 MB. Free memory was 69.3 MB in the beginning and 82.9 MB in the end (delta: -13.5 MB). Peak memory consumption was 10.5 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8 --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 e4298ca4b283086df2e0e2f17b814348cf7ca285d4c19f0d8a4923f1c5d9a834 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:24:24,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:24:24,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:24:25,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:24:25,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:24:25,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:24:25,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:24:25,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:24:25,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:24:25,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:24:25,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:24:25,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:24:25,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:24:25,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:24:25,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:24:25,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:24:25,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:24:25,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:24:25,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:24:25,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:24:25,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:24:25,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:24:25,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:24:25,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:24:25,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:24:25,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:24:25,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:24:25,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:24:25,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:24:25,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:24:25,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:24:25,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:24:25,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:24:25,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:24:25,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:24:25,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:24:25,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:24:25,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:24:25,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:24:25,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:24:25,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:24:25,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-07 01:24:25,168 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:24:25,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:24:25,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:24:25,170 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:24:25,170 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:24:25,170 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:24:25,170 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:24:25,171 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:24:25,171 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:24:25,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:24:25,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:24:25,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:24:25,174 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:24:25,174 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:24:25,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:24:25,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:24:25,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:24:25,175 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:24:25,175 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:24:25,175 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:24:25,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:24:25,175 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:24:25,176 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:24:25,176 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:24:25,176 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:24:25,176 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:24:25,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:24:25,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:24:25,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:24:25,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:24:25,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:24:25,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:24:25,178 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:24:25,178 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:24:25,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:24:25,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:24:25,179 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_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4298ca4b283086df2e0e2f17b814348cf7ca285d4c19f0d8a4923f1c5d9a834 [2021-11-07 01:24:25,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:24:25,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:24:25,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:24:25,575 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:24:25,575 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:24:25,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2021-11-07 01:24:25,660 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/data/6458a914f/9ca9981c94aa4b8085a7fc15ff01a3e4/FLAGe8a92b4bd [2021-11-07 01:24:26,272 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:24:26,273 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2021-11-07 01:24:26,291 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/data/6458a914f/9ca9981c94aa4b8085a7fc15ff01a3e4/FLAGe8a92b4bd [2021-11-07 01:24:26,495 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/data/6458a914f/9ca9981c94aa4b8085a7fc15ff01a3e4 [2021-11-07 01:24:26,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:24:26,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:24:26,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:24:26,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:24:26,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:24:26,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:24:26" (1/1) ... [2021-11-07 01:24:26,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379b9f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:26, skipping insertion in model container [2021-11-07 01:24:26,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:24:26" (1/1) ... [2021-11-07 01:24:26,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:24:26,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:24:26,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:24:26,893 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:24:26,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:24:26,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:24:26,988 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:24:27,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:24:27,106 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:24:27,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:27 WrapperNode [2021-11-07 01:24:27,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:24:27,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:24:27,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:24:27,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:24:27,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:27" (1/1) ... [2021-11-07 01:24:27,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:27" (1/1) ... [2021-11-07 01:24:27,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:24:27,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:24:27,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:24:27,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:24:27,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:27" (1/1) ... [2021-11-07 01:24:27,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:27" (1/1) ... [2021-11-07 01:24:27,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:27" (1/1) ... [2021-11-07 01:24:27,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:27" (1/1) ... [2021-11-07 01:24:27,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:27" (1/1) ... [2021-11-07 01:24:27,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:27" (1/1) ... [2021-11-07 01:24:27,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:27" (1/1) ... [2021-11-07 01:24:27,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:24:27,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:24:27,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:24:27,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:24:27,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:27" (1/1) ... [2021-11-07 01:24:27,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:24:27,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:24:27,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:24:27,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:24:27,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:24:27,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:24:27,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:24:27,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:24:27,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:24:27,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:24:28,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:24:28,153 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-07 01:24:28,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:24:28 BoogieIcfgContainer [2021-11-07 01:24:28,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:24:28,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:24:28,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:24:28,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:24:28,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:24:26" (1/3) ... [2021-11-07 01:24:28,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a17e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:24:28, skipping insertion in model container [2021-11-07 01:24:28,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:24:27" (2/3) ... [2021-11-07 01:24:28,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a17e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:24:28, skipping insertion in model container [2021-11-07 01:24:28,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:24:28" (3/3) ... [2021-11-07 01:24:28,162 INFO L111 eAbstractionObserver]: Analyzing ICFG knapsack_alloca_unsafe.i [2021-11-07 01:24:28,167 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:24:28,168 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2021-11-07 01:24:28,220 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:24:28,226 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 [2021-11-07 01:24:28,227 INFO L340 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2021-11-07 01:24:28,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 37 states have (on average 2.054054054054054) internal successors, (76), 64 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:28,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:24:28,248 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:28,249 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:28,249 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-11-07 01:24:28,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:28,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2021-11-07 01:24:28,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:28,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933280597] [2021-11-07 01:24:28,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:28,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:28,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:28,274 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:28,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:24:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:28,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:24:28,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:28,567 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-11-07 01:24:28,568 INFO L388 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 42 treesize of output 52 [2021-11-07 01:24:28,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:28,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:28,900 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:28,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933280597] [2021-11-07 01:24:28,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933280597] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:28,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:28,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:24:28,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734736027] [2021-11-07 01:24:28,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:24:28,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:28,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:24:28,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:24:28,930 INFO L87 Difference]: Start difference. First operand has 65 states, 37 states have (on average 2.054054054054054) internal successors, (76), 64 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:29,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:29,241 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2021-11-07 01:24:29,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:24:29,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 01:24:29,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:29,251 INFO L225 Difference]: With dead ends: 64 [2021-11-07 01:24:29,251 INFO L226 Difference]: Without dead ends: 62 [2021-11-07 01:24:29,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:24:29,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-07 01:24:29,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-07 01:24:29,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 61 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:29,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2021-11-07 01:24:29,285 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 7 [2021-11-07 01:24:29,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:29,286 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2021-11-07 01:24:29,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:29,286 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2021-11-07 01:24:29,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:24:29,287 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:29,287 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:29,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:24:29,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:29,500 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-11-07 01:24:29,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:29,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2021-11-07 01:24:29,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:29,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617525598] [2021-11-07 01:24:29,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:29,502 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:29,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:29,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:29,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:24:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:29,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:24:29,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:29,723 INFO L354 Elim1Store]: treesize reduction 93, result has 14.7 percent of original size [2021-11-07 01:24:29,724 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 3 case distinctions, treesize of input 36 treesize of output 41 [2021-11-07 01:24:29,734 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 01:24:29,734 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 44 treesize of output 40 [2021-11-07 01:24:29,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:29,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:30,252 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 01:24:30,253 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 74 treesize of output 70 [2021-11-07 01:24:30,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:30,336 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:30,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617525598] [2021-11-07 01:24:30,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617525598] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:30,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:30,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 01:24:30,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870479313] [2021-11-07 01:24:30,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:24:30,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:30,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:24:30,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:24:30,340 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:32,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:32,302 INFO L93 Difference]: Finished difference Result 237 states and 260 transitions. [2021-11-07 01:24:32,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:24:32,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 01:24:32,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:32,307 INFO L225 Difference]: With dead ends: 237 [2021-11-07 01:24:32,307 INFO L226 Difference]: Without dead ends: 237 [2021-11-07 01:24:32,308 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:24:32,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-07 01:24:32,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 68. [2021-11-07 01:24:32,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 67 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:32,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2021-11-07 01:24:32,320 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 7 [2021-11-07 01:24:32,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:32,320 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2021-11-07 01:24:32,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:32,320 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2021-11-07 01:24:32,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:24:32,321 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:32,321 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:32,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:32,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:32,533 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-11-07 01:24:32,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:32,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2021-11-07 01:24:32,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:32,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878373699] [2021-11-07 01:24:32,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:32,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:32,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:32,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:32,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:24:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:24:32,608 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:24:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:24:32,656 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-07 01:24:32,657 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:24:32,658 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-11-07 01:24:32,659 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-11-07 01:24:32,660 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-11-07 01:24:32,660 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-11-07 01:24:32,660 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-11-07 01:24:32,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-11-07 01:24:32,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-11-07 01:24:32,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-11-07 01:24:32,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-11-07 01:24:32,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-11-07 01:24:32,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-11-07 01:24:32,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-11-07 01:24:32,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-11-07 01:24:32,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-11-07 01:24:32,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-11-07 01:24:32,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-11-07 01:24:32,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-11-07 01:24:32,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-11-07 01:24:32,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-11-07 01:24:32,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-11-07 01:24:32,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-11-07 01:24:32,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-11-07 01:24:32,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-11-07 01:24:32,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-11-07 01:24:32,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-11-07 01:24:32,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-11-07 01:24:32,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK [2021-11-07 01:24:32,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:32,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:32,868 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-07 01:24:32,872 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:24:32,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:24:32 BoogieIcfgContainer [2021-11-07 01:24:32,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:24:32,893 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:24:32,893 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:24:32,893 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:24:32,894 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:24:28" (3/4) ... [2021-11-07 01:24:32,896 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 01:24:32,961 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:24:32,961 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:24:32,963 INFO L168 Benchmark]: Toolchain (without parser) took 6462.85 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 37.0 MB in the beginning and 45.4 MB in the end (delta: -8.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:24:32,964 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 58.7 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:24:32,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.97 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 31.5 MB in the end (delta: 5.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:24:32,970 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.19 ms. Allocated memory is still 58.7 MB. Free memory was 31.5 MB in the beginning and 29.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:24:32,971 INFO L168 Benchmark]: Boogie Preprocessor took 34.94 ms. Allocated memory is still 58.7 MB. Free memory was 29.2 MB in the beginning and 27.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:24:32,971 INFO L168 Benchmark]: RCFGBuilder took 930.15 ms. Allocated memory is still 58.7 MB. Free memory was 27.5 MB in the beginning and 26.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:24:32,972 INFO L168 Benchmark]: TraceAbstraction took 4736.15 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 25.5 MB in the beginning and 47.5 MB in the end (delta: -22.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:24:32,972 INFO L168 Benchmark]: Witness Printer took 68.12 ms. Allocated memory is still 79.7 MB. Free memory was 47.1 MB in the beginning and 45.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:24:32,975 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 58.7 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 606.97 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 31.5 MB in the end (delta: 5.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.19 ms. Allocated memory is still 58.7 MB. Free memory was 31.5 MB in the beginning and 29.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.94 ms. Allocated memory is still 58.7 MB. Free memory was 29.2 MB in the beginning and 27.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 930.15 ms. Allocated memory is still 58.7 MB. Free memory was 27.5 MB in the beginning and 26.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4736.15 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 25.5 MB in the beginning and 47.5 MB in the end (delta: -22.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 68.12 ms. Allocated memory is still 79.7 MB. Free memory was 47.1 MB in the beginning and 45.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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() - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 517]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 517]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 519]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 519]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 519]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 519]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 519]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 519]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 519]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 519]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 520]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 520]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 526]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 65 locations, 27 error locations. Started 1 CEGAR loops. OverallTime: 4.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 132 SDtfs, 500 SDslu, 259 SDs, 0 SdLazy, 269 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=2, InterpolantAutomatonStates: 11, 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, 2 MinimizatonAttempts, 169 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 4 QuantifiedInterpolants, 256 SizeOfPredicates, 14 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-07 01:24:33,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ee4de6-bd81-44ca-8e45-392ef492f40c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)