./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp --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 e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:04:27,350 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:04:27,436 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 21:04:27,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:04:27,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:04:27,471 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:04:27,472 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:04:27,472 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:04:27,473 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:04:27,474 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:04:27,474 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:04:27,475 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:04:27,476 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:04:27,476 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:04:27,477 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:04:27,478 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:04:27,478 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:04:27,479 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:04:27,479 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:04:27,480 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:04:27,481 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:04:27,481 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:04:27,482 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:04:27,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:04:27,483 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:04:27,484 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:04:27,484 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:04:27,485 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:04:27,485 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:04:27,486 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:04:27,486 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:04:27,487 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:04:27,487 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:04:27,488 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:04:27,488 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:04:27,488 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:04:27,489 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:04:27,489 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:04:27,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:04:27,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:04:27,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:04:27,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:04:27,492 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:04:27,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:04:27,492 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:04:27,492 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:04:27,493 INFO L153 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_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 [2023-11-06 21:04:27,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:04:27,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:04:27,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:04:27,832 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:04:27,835 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:04:27,836 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2023-11-06 21:04:31,084 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:04:31,602 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:04:31,603 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2023-11-06 21:04:31,632 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/data/167cb45ff/63717f619f8a4f3093f767dabfcee5f5/FLAGfa1f4c1f0 [2023-11-06 21:04:31,649 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/data/167cb45ff/63717f619f8a4f3093f767dabfcee5f5 [2023-11-06 21:04:31,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:04:31,659 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:04:31,662 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:04:31,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:04:31,668 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:04:31,669 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:04:31" (1/1) ... [2023-11-06 21:04:31,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e7a451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:31, skipping insertion in model container [2023-11-06 21:04:31,671 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:04:31" (1/1) ... [2023-11-06 21:04:31,764 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:04:32,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:04:32,448 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-06 21:04:32,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5907c7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:32, skipping insertion in model container [2023-11-06 21:04:32,449 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:04:32,450 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 21:04:32,452 INFO L158 Benchmark]: Toolchain (without parser) took 791.78ms. Allocated memory is still 146.8MB. Free memory was 117.1MB in the beginning and 94.5MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-06 21:04:32,452 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 115.3MB. Free memory is still 83.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:04:32,453 INFO L158 Benchmark]: CACSL2BoogieTranslator took 787.35ms. Allocated memory is still 146.8MB. Free memory was 117.1MB in the beginning and 94.5MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-06 21:04:32,457 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 115.3MB. Free memory is still 83.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 787.35ms. Allocated memory is still 146.8MB. Free memory was 117.1MB in the beginning and 94.5MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp --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 e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:04:34,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:04:34,834 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-06 21:04:34,840 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:04:34,841 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:04:34,871 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:04:34,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:04:34,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:04:34,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:04:34,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:04:34,874 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:04:34,875 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:04:34,875 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:04:34,875 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:04:34,876 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:04:34,876 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:04:34,877 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:04:34,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:04:34,878 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:04:34,879 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:04:34,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:04:34,880 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:04:34,880 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:04:34,881 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:04:34,881 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:04:34,881 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:04:34,882 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:04:34,882 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:04:34,883 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 21:04:34,883 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 21:04:34,883 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:04:34,884 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:04:34,884 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:04:34,884 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:04:34,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:04:34,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:04:34,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:04:34,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:04:34,886 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:04:34,886 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 21:04:34,886 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 21:04:34,891 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:04:34,891 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:04:34,892 INFO L153 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_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 [2023-11-06 21:04:35,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:04:35,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:04:35,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:04:35,361 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:04:35,361 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:04:35,363 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2023-11-06 21:04:38,617 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:04:39,035 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:04:39,039 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2023-11-06 21:04:39,072 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/data/25340ebe6/7edf1bddef8c4c0c822afb1101b47aff/FLAGa781bb38e [2023-11-06 21:04:39,090 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/data/25340ebe6/7edf1bddef8c4c0c822afb1101b47aff [2023-11-06 21:04:39,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:04:39,094 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:04:39,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:04:39,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:04:39,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:04:39,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:04:39" (1/1) ... [2023-11-06 21:04:39,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be9d755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:39, skipping insertion in model container [2023-11-06 21:04:39,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:04:39" (1/1) ... [2023-11-06 21:04:39,189 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:04:40,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:04:40,198 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 21:04:40,214 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:04:40,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:04:40,318 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:04:40,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:04:40,508 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:04:40,516 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:04:40,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40 WrapperNode [2023-11-06 21:04:40,517 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:04:40,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:04:40,518 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:04:40,518 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:04:40,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:40,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:40,692 INFO L138 Inliner]: procedures = 285, calls = 351, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1213 [2023-11-06 21:04:40,692 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:04:40,693 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:04:40,693 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:04:40,693 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:04:40,704 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:40,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:40,716 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:40,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:40,808 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:40,834 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:40,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:40,864 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:40,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:04:40,879 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:04:40,879 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:04:40,879 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:04:40,884 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:40,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:04:40,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:04:40,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:04:40,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:04:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-06 21:04:40,983 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-06 21:04:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-06 21:04:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 21:04:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:04:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-06 21:04:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 21:04:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:04:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 21:04:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 21:04:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-06 21:04:40,989 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-06 21:04:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 21:04:40,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 21:04:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:04:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:04:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-06 21:04:40,990 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-06 21:04:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 21:04:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-06 21:04:40,992 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-06 21:04:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:04:40,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:04:41,399 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:04:41,404 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:04:47,973 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:04:48,002 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:04:48,003 INFO L302 CfgBuilder]: Removed 72 assume(true) statements. [2023-11-06 21:04:48,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:04:48 BoogieIcfgContainer [2023-11-06 21:04:48,009 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:04:48,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:04:48,013 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:04:48,017 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:04:48,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:04:39" (1/3) ... [2023-11-06 21:04:48,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf9cd5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:04:48, skipping insertion in model container [2023-11-06 21:04:48,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (2/3) ... [2023-11-06 21:04:48,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf9cd5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:04:48, skipping insertion in model container [2023-11-06 21:04:48,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:04:48" (3/3) ... [2023-11-06 21:04:48,023 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test6-2.i [2023-11-06 21:04:48,045 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:04:48,046 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 631 error locations. [2023-11-06 21:04:48,140 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:04:48,148 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@26c8f074, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:04:48,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 631 error locations. [2023-11-06 21:04:48,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 1291 states, 635 states have (on average 2.222047244094488) internal successors, (1411), 1269 states have internal predecessors, (1411), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-06 21:04:48,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 21:04:48,169 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:04:48,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 21:04:48,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:04:48,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:04:48,183 INFO L85 PathProgramCache]: Analyzing trace with hash 85465, now seen corresponding path program 1 times [2023-11-06 21:04:48,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:04:48,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106278238] [2023-11-06 21:04:48,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:04:48,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:04:48,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:04:48,208 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 21:04:48,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 21:04:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:04:48,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:04:48,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:04:48,559 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 21:04:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:04:48,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:04:48,575 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:04:48,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106278238] [2023-11-06 21:04:48,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106278238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:04:48,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:04:48,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:04:48,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182645659] [2023-11-06 21:04:48,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:04:48,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:04:48,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:04:48,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:04:48,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:04:48,628 INFO L87 Difference]: Start difference. First operand has 1291 states, 635 states have (on average 2.222047244094488) internal successors, (1411), 1269 states have internal predecessors, (1411), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-06 21:04:52,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:04:52,028 INFO L93 Difference]: Finished difference Result 1552 states and 1644 transitions. [2023-11-06 21:04:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:04:52,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-06 21:04:52,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:04:52,052 INFO L225 Difference]: With dead ends: 1552 [2023-11-06 21:04:52,052 INFO L226 Difference]: Without dead ends: 1550 [2023-11-06 21:04:52,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:04:52,057 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 915 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:04:52,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1273 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-06 21:04:52,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2023-11-06 21:04:52,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1312. [2023-11-06 21:04:52,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 671 states have (on average 2.0864381520119224) internal successors, (1400), 1292 states have internal predecessors, (1400), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 21:04:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1434 transitions. [2023-11-06 21:04:52,183 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1434 transitions. Word has length 3 [2023-11-06 21:04:52,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:04:52,184 INFO L495 AbstractCegarLoop]: Abstraction has 1312 states and 1434 transitions. [2023-11-06 21:04:52,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-06 21:04:52,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1434 transitions. [2023-11-06 21:04:52,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 21:04:52,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:04:52,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 21:04:52,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:04:52,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:04:52,394 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:04:52,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:04:52,395 INFO L85 PathProgramCache]: Analyzing trace with hash 85466, now seen corresponding path program 1 times [2023-11-06 21:04:52,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:04:52,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558847923] [2023-11-06 21:04:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:04:52,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:04:52,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:04:52,398 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 21:04:52,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 21:04:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:04:52,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:04:52,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:04:52,584 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 21:04:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:04:52,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:04:52,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:04:52,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558847923] [2023-11-06 21:04:52,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558847923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:04:52,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:04:52,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:04:52,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061904697] [2023-11-06 21:04:52,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:04:52,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:04:52,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:04:52,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:04:52,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:04:52,602 INFO L87 Difference]: Start difference. First operand 1312 states and 1434 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-06 21:04:57,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:04:57,310 INFO L93 Difference]: Finished difference Result 1908 states and 2079 transitions. [2023-11-06 21:04:57,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:04:57,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-06 21:04:57,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:04:57,325 INFO L225 Difference]: With dead ends: 1908 [2023-11-06 21:04:57,325 INFO L226 Difference]: Without dead ends: 1908 [2023-11-06 21:04:57,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:04:57,328 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 629 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:04:57,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1771 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-06 21:04:57,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2023-11-06 21:04:57,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1521. [2023-11-06 21:04:57,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 879 states have (on average 2.0671217292377704) internal successors, (1817), 1499 states have internal predecessors, (1817), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 21:04:57,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1855 transitions. [2023-11-06 21:04:57,406 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1855 transitions. Word has length 3 [2023-11-06 21:04:57,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:04:57,406 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 1855 transitions. [2023-11-06 21:04:57,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-06 21:04:57,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1855 transitions. [2023-11-06 21:04:57,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 21:04:57,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:04:57,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:04:57,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-06 21:04:57,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:04:57,613 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:04:57,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:04:57,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1307350193, now seen corresponding path program 1 times [2023-11-06 21:04:57,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:04:57,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130830619] [2023-11-06 21:04:57,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:04:57,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:04:57,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:04:57,616 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 21:04:57,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb4701c-f55a-463e-a5c5-a9524a01d494/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-06 21:04:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:04:57,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 21:04:57,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:04:57,840 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 21:04:57,851 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 21:04:57,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:04:57,971 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 21:04:57,996 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 21:04:57,997 INFO L351 Elim1Store]: Elim1 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 13 treesize of output 13 [2023-11-06 21:04:58,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:04:58,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:04:58,030 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:04:58,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130830619] [2023-11-06 21:04:58,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130830619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:04:58,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:04:58,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:04:58,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497477012] [2023-11-06 21:04:58,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:04:58,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:04:58,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:04:58,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:04:58,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:04:58,033 INFO L87 Difference]: Start difference. First operand 1521 states and 1855 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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)