./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4298ca4b283086df2e0e2f17b814348cf7ca285d4c19f0d8a4923f1c5d9a834 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:29:59,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:29:59,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:29:59,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:29:59,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:29:59,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:29:59,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:29:59,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:29:59,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:29:59,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:29:59,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:29:59,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:29:59,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:29:59,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:29:59,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:29:59,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:29:59,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:29:59,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:29:59,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:29:59,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:29:59,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:29:59,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:29:59,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:29:59,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:29:59,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:29:59,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:29:59,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:29:59,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:29:59,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:29:59,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:29:59,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:29:59,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:29:59,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:29:59,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:29:59,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:29:59,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:29:59,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:29:59,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:29:59,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:29:59,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:29:59,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:29:59,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 23:29:59,534 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:29:59,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:29:59,535 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:29:59,535 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:29:59,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:29:59,536 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:29:59,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:29:59,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:29:59,537 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:29:59,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:29:59,537 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:29:59,538 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 23:29:59,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:29:59,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:29:59,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:29:59,538 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 23:29:59,538 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 23:29:59,539 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 23:29:59,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:29:59,539 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 23:29:59,539 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:29:59,539 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:29:59,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:29:59,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:29:59,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:29:59,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:29:59,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:29:59,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:29:59,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:29:59,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:29:59,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:29:59,541 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4298ca4b283086df2e0e2f17b814348cf7ca285d4c19f0d8a4923f1c5d9a834 [2021-12-06 23:29:59,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:29:59,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:29:59,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:29:59,745 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:29:59,746 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:29:59,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2021-12-06 23:29:59,791 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/data/381ac996b/2c4df548d3fe4ea482ea98b440f67694/FLAG089971561 [2021-12-06 23:30:00,224 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:30:00,225 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2021-12-06 23:30:00,236 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/data/381ac996b/2c4df548d3fe4ea482ea98b440f67694/FLAG089971561 [2021-12-06 23:30:00,246 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/data/381ac996b/2c4df548d3fe4ea482ea98b440f67694 [2021-12-06 23:30:00,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:30:00,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:30:00,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:30:00,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:30:00,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:30:00,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:30:00" (1/1) ... [2021-12-06 23:30:00,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bec4c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:00, skipping insertion in model container [2021-12-06 23:30:00,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:30:00" (1/1) ... [2021-12-06 23:30:00,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:30:00,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:30:00,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:30:00,477 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) [2021-12-06 23:30:00,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@28162f92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:00, skipping insertion in model container [2021-12-06 23:30:00,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:30:00,477 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-06 23:30:00,479 INFO L158 Benchmark]: Toolchain (without parser) took 229.13ms. Allocated memory is still 119.5MB. Free memory was 82.9MB in the beginning and 92.0MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 23:30:00,479 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 119.5MB. Free memory was 96.9MB in the beginning and 96.9MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:30:00,480 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.85ms. Allocated memory is still 119.5MB. Free memory was 82.5MB in the beginning and 92.0MB in the end (delta: -9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 23:30:00,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 119.5MB. Free memory was 96.9MB in the beginning and 96.9MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 226.85ms. Allocated memory is still 119.5MB. Free memory was 82.5MB in the beginning and 92.0MB in the end (delta: -9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * 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_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4298ca4b283086df2e0e2f17b814348cf7ca285d4c19f0d8a4923f1c5d9a834 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:30:01,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:30:01,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:30:01,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:30:01,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:30:01,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:30:01,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:30:01,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:30:01,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:30:01,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:30:01,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:30:01,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:30:01,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:30:01,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:30:01,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:30:01,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:30:01,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:30:01,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:30:01,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:30:01,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:30:01,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:30:01,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:30:01,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:30:01,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:30:01,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:30:01,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:30:01,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:30:01,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:30:01,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:30:01,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:30:01,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:30:01,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:30:01,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:30:01,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:30:01,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:30:01,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:30:01,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:30:01,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:30:01,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:30:01,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:30:01,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:30:01,910 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-06 23:30:01,930 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:30:01,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:30:01,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:30:01,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:30:01,931 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:30:01,931 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:30:01,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:30:01,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:30:01,932 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:30:01,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:30:01,932 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:30:01,933 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 23:30:01,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:30:01,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:30:01,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:30:01,933 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 23:30:01,933 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 23:30:01,933 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 23:30:01,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:30:01,934 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 23:30:01,934 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 23:30:01,934 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 23:30:01,934 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:30:01,934 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:30:01,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:30:01,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:30:01,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:30:01,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:30:01,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:30:01,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:30:01,935 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 23:30:01,935 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 23:30:01,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:30:01,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 23:30:01,936 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_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4298ca4b283086df2e0e2f17b814348cf7ca285d4c19f0d8a4923f1c5d9a834 [2021-12-06 23:30:02,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:30:02,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:30:02,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:30:02,175 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:30:02,176 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:30:02,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2021-12-06 23:30:02,223 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/data/212cf8d6e/d14f3e814c7c4e66924b8ffccbbc02a8/FLAG474bc2873 [2021-12-06 23:30:02,669 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:30:02,669 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2021-12-06 23:30:02,683 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/data/212cf8d6e/d14f3e814c7c4e66924b8ffccbbc02a8/FLAG474bc2873 [2021-12-06 23:30:02,694 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/data/212cf8d6e/d14f3e814c7c4e66924b8ffccbbc02a8 [2021-12-06 23:30:02,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:30:02,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:30:02,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:30:02,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:30:02,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:30:02,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:30:02" (1/1) ... [2021-12-06 23:30:02,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ba0b257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:02, skipping insertion in model container [2021-12-06 23:30:02,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:30:02" (1/1) ... [2021-12-06 23:30:02,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:30:02,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:30:02,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:30:02,966 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 23:30:02,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:30:02,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:30:03,000 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:30:03,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:30:03,052 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:30:03,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:03 WrapperNode [2021-12-06 23:30:03,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:30:03,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:30:03,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:30:03,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:30:03,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:03" (1/1) ... [2021-12-06 23:30:03,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:03" (1/1) ... [2021-12-06 23:30:03,091 INFO L137 Inliner]: procedures = 117, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 112 [2021-12-06 23:30:03,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:30:03,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:30:03,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:30:03,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:30:03,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:03" (1/1) ... [2021-12-06 23:30:03,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:03" (1/1) ... [2021-12-06 23:30:03,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:03" (1/1) ... [2021-12-06 23:30:03,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:03" (1/1) ... [2021-12-06 23:30:03,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:03" (1/1) ... [2021-12-06 23:30:03,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:03" (1/1) ... [2021-12-06 23:30:03,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:03" (1/1) ... [2021-12-06 23:30:03,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:30:03,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:30:03,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:30:03,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:30:03,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:03" (1/1) ... [2021-12-06 23:30:03,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:30:03,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:30:03,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:30:03,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:30:03,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 23:30:03,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:30:03,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:30:03,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 23:30:03,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:30:03,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:30:03,250 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:30:03,252 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:30:03,716 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:30:03,721 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:30:03,721 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-06 23:30:03,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:30:03 BoogieIcfgContainer [2021-12-06 23:30:03,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:30:03,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:30:03,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:30:03,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:30:03,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:30:02" (1/3) ... [2021-12-06 23:30:03,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d2b2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:30:03, skipping insertion in model container [2021-12-06 23:30:03,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:03" (2/3) ... [2021-12-06 23:30:03,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d2b2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:30:03, skipping insertion in model container [2021-12-06 23:30:03,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:30:03" (3/3) ... [2021-12-06 23:30:03,729 INFO L111 eAbstractionObserver]: Analyzing ICFG knapsack_alloca_unsafe.i [2021-12-06 23:30:03,733 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:30:03,733 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2021-12-06 23:30:03,765 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:30:03,770 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 [2021-12-06 23:30:03,770 INFO L340 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2021-12-06 23:30:03,781 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) [2021-12-06 23:30:03,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 23:30:03,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:03,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:03,787 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-06 23:30:03,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:03,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2021-12-06 23:30:03,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:30:03,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104613673] [2021-12-06 23:30:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:03,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:30:03,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:30:03,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:30:03,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 23:30:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:03,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 23:30:03,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:30:04,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:30:04,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:30:04,064 INFO L354 Elim1Store]: treesize reduction 88, result has 24.8 percent of original size [2021-12-06 23:30:04,065 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 158 treesize of output 170 [2021-12-06 23:30:04,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:30:04,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:30:04,774 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:30:04,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104613673] [2021-12-06 23:30:04,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104613673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:04,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:30:04,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:30:04,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628003469] [2021-12-06 23:30:04,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:04,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:30:04,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:30:04,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:30:04,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:30:04,806 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 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-06 23:30:04,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:04,820 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2021-12-06 23:30:04,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:30:04,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 [2021-12-06 23:30:04,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:04,828 INFO L225 Difference]: With dead ends: 72 [2021-12-06 23:30:04,828 INFO L226 Difference]: Without dead ends: 70 [2021-12-06 23:30:04,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:30:04,831 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 5 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:04,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 105 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2021-12-06 23:30:04,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-06 23:30:04,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2021-12-06 23:30:04,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 64 states have internal predecessors, (74), 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) [2021-12-06 23:30:04,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2021-12-06 23:30:04,857 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 7 [2021-12-06 23:30:04,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:04,857 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2021-12-06 23:30:04,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-06 23:30:04,857 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2021-12-06 23:30:04,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 23:30:04,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:04,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:04,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:30:05,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:30:05,059 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-06 23:30:05,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:05,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2021-12-06 23:30:05,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:30:05,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540129004] [2021-12-06 23:30:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:05,065 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:30:05,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:30:05,068 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:30:05,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 23:30:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:05,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 23:30:05,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:30:05,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:30:05,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:30:05,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:30:05,325 INFO L354 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2021-12-06 23:30:05,325 INFO L388 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 29 [2021-12-06 23:30:05,345 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 23:30:05,345 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 135 treesize of output 129 [2021-12-06 23:30:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:30:05,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:30:05,472 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:30:05,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540129004] [2021-12-06 23:30:05,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540129004] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:05,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:30:05,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:30:05,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588433821] [2021-12-06 23:30:05,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:05,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:30:05,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:30:05,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:30:05,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:30:05,476 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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) [2021-12-06 23:30:06,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:06,025 INFO L93 Difference]: Finished difference Result 200 states and 220 transitions. [2021-12-06 23:30:06,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:30:06,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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 [2021-12-06 23:30:06,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:06,028 INFO L225 Difference]: With dead ends: 200 [2021-12-06 23:30:06,028 INFO L226 Difference]: Without dead ends: 200 [2021-12-06 23:30:06,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:30:06,030 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 156 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:06,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 349 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 23:30:06,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-12-06 23:30:06,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 69. [2021-12-06 23:30:06,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 42 states have (on average 1.880952380952381) internal successors, (79), 68 states have internal predecessors, (79), 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) [2021-12-06 23:30:06,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2021-12-06 23:30:06,041 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 7 [2021-12-06 23:30:06,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:06,041 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2021-12-06 23:30:06,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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) [2021-12-06 23:30:06,042 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2021-12-06 23:30:06,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 23:30:06,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:06,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:06,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 23:30:06,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:30:06,244 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-12-06 23:30:06,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:06,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2021-12-06 23:30:06,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:30:06,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986100726] [2021-12-06 23:30:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:06,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:30:06,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:30:06,251 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:30:06,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 23:30:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:30:06,332 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:30:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:30:06,373 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-06 23:30:06,373 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:30:06,374 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (26 of 27 remaining) [2021-12-06 23:30:06,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (25 of 27 remaining) [2021-12-06 23:30:06,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (24 of 27 remaining) [2021-12-06 23:30:06,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (23 of 27 remaining) [2021-12-06 23:30:06,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (22 of 27 remaining) [2021-12-06 23:30:06,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (21 of 27 remaining) [2021-12-06 23:30:06,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (20 of 27 remaining) [2021-12-06 23:30:06,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (19 of 27 remaining) [2021-12-06 23:30:06,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (18 of 27 remaining) [2021-12-06 23:30:06,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (17 of 27 remaining) [2021-12-06 23:30:06,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (16 of 27 remaining) [2021-12-06 23:30:06,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (15 of 27 remaining) [2021-12-06 23:30:06,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (14 of 27 remaining) [2021-12-06 23:30:06,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (13 of 27 remaining) [2021-12-06 23:30:06,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (12 of 27 remaining) [2021-12-06 23:30:06,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (11 of 27 remaining) [2021-12-06 23:30:06,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (10 of 27 remaining) [2021-12-06 23:30:06,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (9 of 27 remaining) [2021-12-06 23:30:06,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (8 of 27 remaining) [2021-12-06 23:30:06,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (7 of 27 remaining) [2021-12-06 23:30:06,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (6 of 27 remaining) [2021-12-06 23:30:06,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (5 of 27 remaining) [2021-12-06 23:30:06,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (4 of 27 remaining) [2021-12-06 23:30:06,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (3 of 27 remaining) [2021-12-06 23:30:06,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (2 of 27 remaining) [2021-12-06 23:30:06,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (1 of 27 remaining) [2021-12-06 23:30:06,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (0 of 27 remaining) [2021-12-06 23:30:06,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 23:30:06,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:30:06,583 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-06 23:30:06,586 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:30:06,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:30:06 BoogieIcfgContainer [2021-12-06 23:30:06,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:30:06,606 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:30:06,606 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:30:06,606 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:30:06,606 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:30:03" (3/4) ... [2021-12-06 23:30:06,608 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 23:30:06,634 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 23:30:06,634 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:30:06,635 INFO L158 Benchmark]: Toolchain (without parser) took 3937.04ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 41.9MB in the beginning and 29.9MB in the end (delta: 12.0MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2021-12-06 23:30:06,635 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 62.9MB. Free memory was 43.8MB in the beginning and 43.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:30:06,635 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.14ms. Allocated memory is still 62.9MB. Free memory was 41.7MB in the beginning and 34.8MB in the end (delta: 6.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 23:30:06,636 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.82ms. Allocated memory is still 62.9MB. Free memory was 34.8MB in the beginning and 32.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:30:06,636 INFO L158 Benchmark]: Boogie Preprocessor took 25.12ms. Allocated memory is still 62.9MB. Free memory was 32.7MB in the beginning and 30.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:30:06,636 INFO L158 Benchmark]: RCFGBuilder took 605.45ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 30.9MB in the beginning and 55.2MB in the end (delta: -24.4MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2021-12-06 23:30:06,637 INFO L158 Benchmark]: TraceAbstraction took 2880.72ms. Allocated memory is still 83.9MB. Free memory was 54.8MB in the beginning and 31.3MB in the end (delta: 23.5MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2021-12-06 23:30:06,637 INFO L158 Benchmark]: Witness Printer took 28.69ms. Allocated memory is still 83.9MB. Free memory was 31.3MB in the beginning and 29.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:30:06,639 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 62.9MB. Free memory was 43.8MB in the beginning and 43.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 354.14ms. Allocated memory is still 62.9MB. Free memory was 41.7MB in the beginning and 34.8MB in the end (delta: 6.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.82ms. Allocated memory is still 62.9MB. Free memory was 34.8MB in the beginning and 32.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.12ms. Allocated memory is still 62.9MB. Free memory was 32.7MB in the beginning and 30.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 605.45ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 30.9MB in the beginning and 55.2MB in the end (delta: -24.4MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2880.72ms. Allocated memory is still 83.9MB. Free memory was 54.8MB in the beginning and 31.3MB in the end (delta: 23.5MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * Witness Printer took 28.69ms. Allocated memory is still 83.9MB. Free memory was 31.3MB in the beginning and 29.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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) VAL [N=1073741824] [L532] COND TRUE M < 1 [L533] M = 1 VAL [M=1, N=1073741824] [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; VAL [__builtin_alloca (M * sizeof(int))={8388623:0}, __builtin_alloca (M * sizeof(int))={8388611:0}, __builtin_alloca (N * sizeof(int))={-2139095025:0}, __builtin_alloca (N * sizeof(int))={8388615:0}, best={8388611:0}, cost={8388623:0}, i=0, M=1, N=1073741824, size={-2139095025:0}, val={8388615:0}] [L540] COND TRUE i < N VAL [__builtin_alloca (M * sizeof(int))={8388623:0}, __builtin_alloca (M * sizeof(int))={8388611:0}, __builtin_alloca (N * sizeof(int))={-2139095025:0}, __builtin_alloca (N * sizeof(int))={8388615:0}, best={8388611:0}, cost={8388623:0}, i=0, M=1, N=1073741824, size={-2139095025:0}, val={8388615:0}] [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: 2.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 161 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 161 mSDsluCounter, 454 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 33 IncrementalHoareTripleChecker+Unchecked, 273 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99 IncrementalHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 181 mSDtfsCounter, 99 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=2, InterpolantAutomatonStates: 9, 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, 136 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 2 QuantifiedInterpolants, 172 SizeOfPredicates, 11 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2021-12-06 23:30:06,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7abd9ea1-b4f5-47ba-8811-47af14e590cb/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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)