./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/readlink-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/readlink-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 64bit --witnessprinter.graph.data.programhash 46eaa86a058d5f8f9ac1a5b9efbcb664547df2e8af2d76b8a7d936d3418cf7e2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:05:17,806 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:05:17,939 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2023-11-19 05:05:17,950 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:05:17,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:05:18,000 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:05:18,002 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:05:18,003 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:05:18,004 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:05:18,010 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:05:18,010 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:05:18,012 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:05:18,012 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:05:18,014 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:05:18,015 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:05:18,017 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:05:18,017 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:05:18,018 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:05:18,018 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:05:18,019 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:05:18,019 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:05:18,020 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:05:18,020 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:05:18,021 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:05:18,022 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:05:18,023 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:05:18,023 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:05:18,023 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:05:18,024 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:05:18,024 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:05:18,026 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:05:18,026 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:05:18,026 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:05:18,027 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:05:18,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:05:18,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:05:18,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:05:18,028 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:05:18,028 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:05:18,028 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:05:18,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:05:18,029 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:05:18,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:05:18,030 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_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46eaa86a058d5f8f9ac1a5b9efbcb664547df2e8af2d76b8a7d936d3418cf7e2 [2023-11-19 05:05:18,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:05:18,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:05:18,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:05:18,420 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:05:18,420 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:05:18,422 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/busybox-1.22.0/readlink-2.i [2023-11-19 05:05:21,905 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:05:22,566 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:05:22,567 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/sv-benchmarks/c/busybox-1.22.0/readlink-2.i [2023-11-19 05:05:22,618 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/data/c2f6f1f81/a98e09d4c62e4ee9943f79bb066d16f6/FLAGeb7966ac6 [2023-11-19 05:05:22,637 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/data/c2f6f1f81/a98e09d4c62e4ee9943f79bb066d16f6 [2023-11-19 05:05:22,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:05:22,648 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:05:22,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:05:22,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:05:22,661 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:05:22,662 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:22" (1/1) ... [2023-11-19 05:05:22,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76cff626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:22, skipping insertion in model container [2023-11-19 05:05:22,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:22" (1/1) ... [2023-11-19 05:05:22,773 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:05:24,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:05:24,641 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) [2023-11-19 05:05:24,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@39cf0070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:24, skipping insertion in model container [2023-11-19 05:05:24,642 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:05:24,642 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 05:05:24,645 INFO L158 Benchmark]: Toolchain (without parser) took 1995.42ms. Allocated memory is still 159.4MB. Free memory was 112.9MB in the beginning and 77.0MB in the end (delta: 35.9MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-19 05:05:24,646 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 159.4MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:05:24,647 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1987.73ms. Allocated memory is still 159.4MB. Free memory was 112.6MB in the beginning and 77.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-19 05:05:24,649 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 159.4MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1987.73ms. Allocated memory is still 159.4MB. Free memory was 112.6MB in the beginning and 77.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2215]: 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_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/readlink-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 64bit --witnessprinter.graph.data.programhash 46eaa86a058d5f8f9ac1a5b9efbcb664547df2e8af2d76b8a7d936d3418cf7e2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:05:27,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:05:27,552 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2023-11-19 05:05:27,562 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:05:27,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:05:27,625 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:05:27,626 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:05:27,627 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:05:27,628 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:05:27,633 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:05:27,634 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:05:27,634 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:05:27,635 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:05:27,637 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:05:27,637 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:05:27,638 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:05:27,639 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:05:27,639 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:05:27,640 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:05:27,641 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:05:27,641 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:05:27,642 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:05:27,642 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:05:27,643 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:05:27,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:05:27,644 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:05:27,644 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:05:27,645 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:05:27,645 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:05:27,645 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:05:27,647 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:05:27,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:05:27,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:05:27,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:05:27,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:05:27,649 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:05:27,650 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:05:27,650 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:05:27,650 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:05:27,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:05:27,651 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_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46eaa86a058d5f8f9ac1a5b9efbcb664547df2e8af2d76b8a7d936d3418cf7e2 [2023-11-19 05:05:28,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:05:28,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:05:28,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:05:28,209 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:05:28,210 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:05:28,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/busybox-1.22.0/readlink-2.i [2023-11-19 05:05:31,870 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:05:32,474 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:05:32,474 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/sv-benchmarks/c/busybox-1.22.0/readlink-2.i [2023-11-19 05:05:32,527 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/data/1c6c9a664/f375b5c43aaf46b68c07fddd3e8cbdcd/FLAG2dc15727b [2023-11-19 05:05:32,552 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/data/1c6c9a664/f375b5c43aaf46b68c07fddd3e8cbdcd [2023-11-19 05:05:32,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:05:32,561 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:05:32,568 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:05:32,568 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:05:32,575 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:05:32,576 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:32" (1/1) ... [2023-11-19 05:05:32,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21359cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:32, skipping insertion in model container [2023-11-19 05:05:32,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:32" (1/1) ... [2023-11-19 05:05:32,707 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:05:34,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:05:34,247 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:05:34,286 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:05:34,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:05:34,481 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:05:34,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:05:34,866 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:05:34,867 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:05:34,867 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:05:34,875 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:05:34,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:34 WrapperNode [2023-11-19 05:05:34,875 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:05:34,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:05:34,877 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:05:34,877 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:05:34,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:34" (1/1) ... [2023-11-19 05:05:34,960 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:34" (1/1) ... [2023-11-19 05:05:35,121 INFO L138 Inliner]: procedures = 589, calls = 398, calls flagged for inlining = 29, calls inlined = 27, statements flattened = 1457 [2023-11-19 05:05:35,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:05:35,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:05:35,123 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:05:35,123 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:05:35,155 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:34" (1/1) ... [2023-11-19 05:05:35,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:34" (1/1) ... [2023-11-19 05:05:35,179 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:34" (1/1) ... [2023-11-19 05:05:35,179 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:34" (1/1) ... [2023-11-19 05:05:35,250 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:34" (1/1) ... [2023-11-19 05:05:35,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:34" (1/1) ... [2023-11-19 05:05:35,279 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:34" (1/1) ... [2023-11-19 05:05:35,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:34" (1/1) ... [2023-11-19 05:05:35,318 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:05:35,320 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:05:35,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:05:35,321 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:05:35,322 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:34" (1/1) ... [2023-11-19 05:05:35,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:05:35,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:35,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:05:35,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:05:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-19 05:05:35,420 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-19 05:05:35,420 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 05:05:35,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:05:35,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:05:35,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-19 05:05:35,421 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 05:05:35,421 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 05:05:35,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:05:35,421 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 05:05:35,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:05:35,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:05:35,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-11-19 05:05:35,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-11-19 05:05:35,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-11-19 05:05:35,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-11-19 05:05:35,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:05:35,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:05:35,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 05:05:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 05:05:35,424 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 05:05:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 05:05:35,424 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 05:05:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:05:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:05:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:05:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:05:35,425 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:05:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:05:35,426 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:05:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:05:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:05:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-19 05:05:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-19 05:05:35,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:05:35,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:05:35,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-19 05:05:35,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-11-19 05:05:35,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 05:05:35,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-11-19 05:05:35,428 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 05:05:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 05:05:35,450 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 05:05:36,115 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:05:36,118 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:05:36,349 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:05:47,791 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:05:47,824 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:05:47,824 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-11-19 05:05:47,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:05:47 BoogieIcfgContainer [2023-11-19 05:05:47,842 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:05:47,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:05:47,845 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:05:47,849 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:05:47,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:05:32" (1/3) ... [2023-11-19 05:05:47,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65232a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:05:47, skipping insertion in model container [2023-11-19 05:05:47,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:34" (2/3) ... [2023-11-19 05:05:47,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65232a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:05:47, skipping insertion in model container [2023-11-19 05:05:47,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:05:47" (3/3) ... [2023-11-19 05:05:47,857 INFO L112 eAbstractionObserver]: Analyzing ICFG readlink-2.i [2023-11-19 05:05:47,883 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:05:47,884 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 437 error locations. [2023-11-19 05:05:47,987 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:05:48,001 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;@262fadf1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:05:48,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 437 error locations. [2023-11-19 05:05:48,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 1067 states, 600 states have (on average 2.0116666666666667) internal successors, (1207), 1034 states have internal predecessors, (1207), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 05:05:48,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:05:48,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:48,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:05:48,024 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 434 more)] === [2023-11-19 05:05:48,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:48,031 INFO L85 PathProgramCache]: Analyzing trace with hash 428050, now seen corresponding path program 1 times [2023-11-19 05:05:48,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:05:48,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575848287] [2023-11-19 05:05:48,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:48,054 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 [2023-11-19 05:05:48,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:05:48,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:05:48,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:05:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:48,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:05:48,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:05:48,570 INFO L378 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 [2023-11-19 05:05:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:05:48,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:05:48,603 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:05:48,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575848287] [2023-11-19 05:05:48,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575848287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:48,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:48,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:05:48,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90525220] [2023-11-19 05:05:48,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:48,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:05:48,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:05:48,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:05:48,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:48,661 INFO L87 Difference]: Start difference. First operand has 1067 states, 600 states have (on average 2.0116666666666667) internal successors, (1207), 1034 states have internal predecessors, (1207), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) 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) [2023-11-19 05:05:52,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:52,868 INFO L93 Difference]: Finished difference Result 1225 states and 1407 transitions. [2023-11-19 05:05:52,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:05:52,879 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 [2023-11-19 05:05:52,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:52,907 INFO L225 Difference]: With dead ends: 1225 [2023-11-19 05:05:52,908 INFO L226 Difference]: Without dead ends: 1223 [2023-11-19 05:05:52,910 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 [2023-11-19 05:05:52,914 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 407 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:52,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1661 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-19 05:05:52,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2023-11-19 05:05:53,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1053. [2023-11-19 05:05:53,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 593 states have (on average 1.954468802698145) internal successors, (1159), 1025 states have internal predecessors, (1159), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 05:05:53,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1204 transitions. [2023-11-19 05:05:53,042 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1204 transitions. Word has length 3 [2023-11-19 05:05:53,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:53,042 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1204 transitions. [2023-11-19 05:05:53,043 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) [2023-11-19 05:05:53,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1204 transitions. [2023-11-19 05:05:53,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:05:53,044 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:53,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:05:53,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:05:53,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:05:53,253 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 434 more)] === [2023-11-19 05:05:53,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:53,254 INFO L85 PathProgramCache]: Analyzing trace with hash 428051, now seen corresponding path program 1 times [2023-11-19 05:05:53,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:05:53,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322884376] [2023-11-19 05:05:53,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:53,256 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 [2023-11-19 05:05:53,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:05:53,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:05:53,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:05:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:53,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:05:53,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:05:53,690 INFO L378 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 [2023-11-19 05:05:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:05:53,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:05:53,727 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:05:53,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322884376] [2023-11-19 05:05:53,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322884376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:53,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:53,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:05:53,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484374994] [2023-11-19 05:05:53,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:53,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:05:53,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:05:53,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:05:53,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:53,730 INFO L87 Difference]: Start difference. First operand 1053 states and 1204 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) [2023-11-19 05:05:59,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:59,639 INFO L93 Difference]: Finished difference Result 1052 states and 1203 transitions. [2023-11-19 05:05:59,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:05:59,641 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 [2023-11-19 05:05:59,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:59,649 INFO L225 Difference]: With dead ends: 1052 [2023-11-19 05:05:59,649 INFO L226 Difference]: Without dead ends: 1052 [2023-11-19 05:05:59,649 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 [2023-11-19 05:05:59,651 INFO L413 NwaCegarLoop]: 1196 mSDtfsCounter, 13 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:59,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1961 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-19 05:05:59,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2023-11-19 05:05:59,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2023-11-19 05:05:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 593 states have (on average 1.9527824620573355) internal successors, (1158), 1024 states have internal predecessors, (1158), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 05:05:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1203 transitions. [2023-11-19 05:05:59,696 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1203 transitions. Word has length 3 [2023-11-19 05:05:59,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:59,696 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1203 transitions. [2023-11-19 05:05:59,696 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) [2023-11-19 05:05:59,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1203 transitions. [2023-11-19 05:05:59,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:05:59,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:59,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:05:59,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/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)] Forceful destruction successful, exit code 0 [2023-11-19 05:05:59,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:05:59,912 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 434 more)] === [2023-11-19 05:05:59,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:59,918 INFO L85 PathProgramCache]: Analyzing trace with hash -132489719, now seen corresponding path program 1 times [2023-11-19 05:05:59,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:05:59,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000115280] [2023-11-19 05:05:59,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:59,920 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 [2023-11-19 05:05:59,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:05:59,922 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:05:59,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:06:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:00,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:06:00,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:06:00,329 INFO L378 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 [2023-11-19 05:06:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:06:00,486 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:06:00,487 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:06:00,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000115280] [2023-11-19 05:06:00,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000115280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:06:00,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:06:00,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:06:00,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196216309] [2023-11-19 05:06:00,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:06:00,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:06:00,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:06:00,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:06:00,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:06:00,490 INFO L87 Difference]: Start difference. First operand 1052 states and 1203 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-11-19 05:06:06,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:06:06,432 INFO L93 Difference]: Finished difference Result 1056 states and 1207 transitions. [2023-11-19 05:06:06,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:06:06,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2023-11-19 05:06:06,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:06:06,441 INFO L225 Difference]: With dead ends: 1056 [2023-11-19 05:06:06,442 INFO L226 Difference]: Without dead ends: 1056 [2023-11-19 05:06:06,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:06:06,444 INFO L413 NwaCegarLoop]: 1194 mSDtfsCounter, 16 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:06:06,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1962 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-19 05:06:06,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2023-11-19 05:06:06,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1054. [2023-11-19 05:06:06,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 595 states have (on average 1.949579831932773) internal successors, (1160), 1026 states have internal predecessors, (1160), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 05:06:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1205 transitions. [2023-11-19 05:06:06,484 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1205 transitions. Word has length 6 [2023-11-19 05:06:06,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:06:06,484 INFO L495 AbstractCegarLoop]: Abstraction has 1054 states and 1205 transitions. [2023-11-19 05:06:06,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-11-19 05:06:06,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1205 transitions. [2023-11-19 05:06:06,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:06:06,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:06,486 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:06:06,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/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)] Ended with exit code 0 [2023-11-19 05:06:06,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:06:06,697 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 434 more)] === [2023-11-19 05:06:06,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:06,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1998398900, now seen corresponding path program 1 times [2023-11-19 05:06:06,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:06:06,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419065521] [2023-11-19 05:06:06,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:06,698 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 [2023-11-19 05:06:06,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:06:06,700 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:06:06,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/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 (5)] Waiting until timeout for monitored process [2023-11-19 05:06:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:07,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:06:07,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:06:07,077 INFO L378 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 [2023-11-19 05:06:07,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:06:07,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:06:08,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:06:08,298 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:06:08,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419065521] [2023-11-19 05:06:08,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419065521] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:06:08,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [796558643] [2023-11-19 05:06:08,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:08,300 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:06:08,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:06:08,306 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:06:08,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfef883-b39a-4f75-816f-a5c8e68b5701/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-11-19 05:06:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:09,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:06:09,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:06:09,222 INFO L378 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