./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/sleep-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/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_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/sleep-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/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 64bit --witnessprinter.graph.data.programhash 1e099c141db1278dd7dc59dcdcfdc10ad8cc996c8a466cfbb74d8c9ff6c31d46 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:02:24,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:02:24,410 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2023-11-06 21:02:24,416 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:02:24,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:02:24,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:02:24,444 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:02:24,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:02:24,445 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:02:24,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:02:24,447 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:02:24,447 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:02:24,448 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:02:24,448 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:02:24,449 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:02:24,449 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:02:24,450 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:02:24,451 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:02:24,451 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:02:24,452 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:02:24,452 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:02:24,453 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:02:24,454 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:02:24,454 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:02:24,455 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:02:24,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:02:24,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:02:24,456 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:02:24,456 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:02:24,457 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:02:24,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:02:24,458 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:02:24,458 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:02:24,458 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:02:24,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:02:24,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:02:24,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:02:24,460 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:02:24,460 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:02:24,460 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:02:24,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:02:24,461 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:02:24,461 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:02:24,462 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_eeff126a-8ed8-46f0-9290-5157e056a799/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e099c141db1278dd7dc59dcdcfdc10ad8cc996c8a466cfbb74d8c9ff6c31d46 [2023-11-06 21:02:24,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:02:24,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:02:24,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:02:24,798 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:02:24,798 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:02:24,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/busybox-1.22.0/sleep-1.i [2023-11-06 21:02:28,002 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:02:28,516 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:02:28,517 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/sv-benchmarks/c/busybox-1.22.0/sleep-1.i [2023-11-06 21:02:28,564 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/data/6a69c6f24/981a37903f434c7c815010bcac394369/FLAG6c6fd074c [2023-11-06 21:02:28,586 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/data/6a69c6f24/981a37903f434c7c815010bcac394369 [2023-11-06 21:02:28,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:02:28,598 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:02:28,602 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:02:28,602 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:02:28,608 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:02:28,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:02:28" (1/1) ... [2023-11-06 21:02:28,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e953205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:28, skipping insertion in model container [2023-11-06 21:02:28,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:02:28" (1/1) ... [2023-11-06 21:02:28,714 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:02:30,255 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:02:30,287 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 21:02:30,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21c4fdfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:30, skipping insertion in model container [2023-11-06 21:02:30,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:02:30,288 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 21:02:30,290 INFO L158 Benchmark]: Toolchain (without parser) took 1691.84ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 90.1MB in the beginning and 139.5MB in the end (delta: -49.4MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2023-11-06 21:02:30,291 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 140.5MB. Free memory is still 114.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:02:30,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1686.53ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 90.1MB in the beginning and 139.5MB in the end (delta: -49.4MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2023-11-06 21:02:30,294 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 140.5MB. Free memory is still 114.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1686.53ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 90.1MB in the beginning and 139.5MB in the end (delta: -49.4MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2471]: 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/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_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/sleep-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/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 64bit --witnessprinter.graph.data.programhash 1e099c141db1278dd7dc59dcdcfdc10ad8cc996c8a466cfbb74d8c9ff6c31d46 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:02:32,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:02:32,956 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2023-11-06 21:02:32,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:02:32,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:02:32,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:02:32,997 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:02:32,997 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:02:32,998 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:02:32,999 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:02:33,000 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:02:33,001 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:02:33,001 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:02:33,002 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:02:33,002 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:02:33,003 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:02:33,004 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:02:33,005 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:02:33,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:02:33,006 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:02:33,007 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:02:33,008 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:02:33,008 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:02:33,009 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:02:33,010 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:02:33,010 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:02:33,011 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 21:02:33,012 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 21:02:33,012 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:02:33,013 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:02:33,013 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:02:33,014 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:02:33,015 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:02:33,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:02:33,016 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:02:33,016 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:02:33,017 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 21:02:33,017 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 21:02:33,017 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:02:33,018 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:02:33,018 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_eeff126a-8ed8-46f0-9290-5157e056a799/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e099c141db1278dd7dc59dcdcfdc10ad8cc996c8a466cfbb74d8c9ff6c31d46 [2023-11-06 21:02:33,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:02:33,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:02:33,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:02:33,499 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:02:33,500 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:02:33,501 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/busybox-1.22.0/sleep-1.i [2023-11-06 21:02:36,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:02:37,387 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:02:37,388 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/sv-benchmarks/c/busybox-1.22.0/sleep-1.i [2023-11-06 21:02:37,430 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/data/ebfcd467c/a4824ec3dc5e46ebbaf79f65d09af236/FLAG197194c23 [2023-11-06 21:02:37,450 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/data/ebfcd467c/a4824ec3dc5e46ebbaf79f65d09af236 [2023-11-06 21:02:37,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:02:37,454 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:02:37,456 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:02:37,456 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:02:37,465 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:02:37,466 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:02:37" (1/1) ... [2023-11-06 21:02:37,468 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c04fd57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:37, skipping insertion in model container [2023-11-06 21:02:37,468 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:02:37" (1/1) ... [2023-11-06 21:02:37,613 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:02:39,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:02:39,497 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 21:02:39,515 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:02:39,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:02:39,628 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:02:39,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:02:40,095 WARN L672 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:02:40,096 WARN L672 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:02:40,096 WARN L672 CHandler]: The function strspn is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:02:40,096 WARN L672 CHandler]: The function longjmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:02:40,104 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:02:40,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:40 WrapperNode [2023-11-06 21:02:40,105 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:02:40,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:02:40,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:02:40,107 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:02:40,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:40" (1/1) ... [2023-11-06 21:02:40,221 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:40" (1/1) ... [2023-11-06 21:02:40,289 INFO L138 Inliner]: procedures = 647, calls = 236, calls flagged for inlining = 18, calls inlined = 16, statements flattened = 712 [2023-11-06 21:02:40,290 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:02:40,290 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:02:40,291 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:02:40,291 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:02:40,311 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:40" (1/1) ... [2023-11-06 21:02:40,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:40" (1/1) ... [2023-11-06 21:02:40,327 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:40" (1/1) ... [2023-11-06 21:02:40,327 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:40" (1/1) ... [2023-11-06 21:02:40,376 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:40" (1/1) ... [2023-11-06 21:02:40,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:40" (1/1) ... [2023-11-06 21:02:40,398 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:40" (1/1) ... [2023-11-06 21:02:40,405 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:40" (1/1) ... [2023-11-06 21:02:40,421 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:02:40,422 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:02:40,422 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:02:40,422 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:02:40,423 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:40" (1/1) ... [2023-11-06 21:02:40,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:02:40,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:02:40,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:02:40,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:02:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:02:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 21:02:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-06 21:02:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure xatoul_sfx [2023-11-06 21:02:40,510 INFO L138 BoogieDeclarations]: Found implementation of procedure xatoul_sfx [2023-11-06 21:02:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:02:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-06 21:02:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:02:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 21:02:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-11-06 21:02:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-11-06 21:02:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-11-06 21:02:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-11-06 21:02:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:02:40,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:02:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-06 21:02:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-06 21:02:40,514 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-06 21:02:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-11-06 21:02:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 21:02:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-06 21:02:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-06 21:02:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 21:02:40,516 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 21:02:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:02:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 21:02:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-06 21:02:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-06 21:02:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 21:02:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2023-11-06 21:02:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-06 21:02:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-06 21:02:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-11-06 21:02:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-06 21:02:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-11-06 21:02:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-06 21:02:40,519 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-06 21:02:41,027 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:02:41,030 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:02:48,450 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:02:48,463 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:02:48,463 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-06 21:02:48,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:02:48 BoogieIcfgContainer [2023-11-06 21:02:48,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:02:48,482 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:02:48,482 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:02:48,486 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:02:48,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:02:37" (1/3) ... [2023-11-06 21:02:48,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5201c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:02:48, skipping insertion in model container [2023-11-06 21:02:48,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:40" (2/3) ... [2023-11-06 21:02:48,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5201c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:02:48, skipping insertion in model container [2023-11-06 21:02:48,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:02:48" (3/3) ... [2023-11-06 21:02:48,492 INFO L112 eAbstractionObserver]: Analyzing ICFG sleep-1.i [2023-11-06 21:02:48,513 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:02:48,513 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 219 error locations. [2023-11-06 21:02:48,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:02:48,605 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;@e410d43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:02:48,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 219 error locations. [2023-11-06 21:02:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 522 states, 285 states have (on average 1.9824561403508771) internal successors, (565), 504 states have internal predecessors, (565), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:02:48,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 21:02:48,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:02:48,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 21:02:48,620 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 216 more)] === [2023-11-06 21:02:48,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:02:48,628 INFO L85 PathProgramCache]: Analyzing trace with hash 356554, now seen corresponding path program 1 times [2023-11-06 21:02:48,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:02:48,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508701548] [2023-11-06 21:02:48,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:02:48,649 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 21:02:48,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:02:48,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/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 21:02:48,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/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 21:02:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:02:48,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:02:48,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:02:49,069 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 21:02:49,096 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 21:02:49,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:02:49,097 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:02:49,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508701548] [2023-11-06 21:02:49,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508701548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:02:49,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:02:49,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:02:49,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935943405] [2023-11-06 21:02:49,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:02:49,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:02:49,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:02:49,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:02:49,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:02:49,149 INFO L87 Difference]: Start difference. First operand has 522 states, 285 states have (on average 1.9824561403508771) internal successors, (565), 504 states have internal predecessors, (565), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) 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 21:02:51,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:02:51,748 INFO L93 Difference]: Finished difference Result 563 states and 622 transitions. [2023-11-06 21:02:51,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:02:51,751 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 21:02:51,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:02:51,767 INFO L225 Difference]: With dead ends: 563 [2023-11-06 21:02:51,767 INFO L226 Difference]: Without dead ends: 561 [2023-11-06 21:02:51,769 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 21:02:51,772 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 102 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:02:51,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 817 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 21:02:51,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2023-11-06 21:02:51,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 513. [2023-11-06 21:02:51,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 281 states have (on average 1.9323843416370108) internal successors, (543), 497 states have internal predecessors, (543), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-06 21:02:51,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 567 transitions. [2023-11-06 21:02:51,851 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 567 transitions. Word has length 3 [2023-11-06 21:02:51,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:02:51,852 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 567 transitions. [2023-11-06 21:02:51,852 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 21:02:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 567 transitions. [2023-11-06 21:02:51,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 21:02:51,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:02:51,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 21:02:51,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/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 21:02:52,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/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 21:02:52,065 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 216 more)] === [2023-11-06 21:02:52,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:02:52,066 INFO L85 PathProgramCache]: Analyzing trace with hash 356555, now seen corresponding path program 1 times [2023-11-06 21:02:52,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:02:52,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027207174] [2023-11-06 21:02:52,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:02:52,068 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 21:02:52,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:02:52,069 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/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 21:02:52,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/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 21:02:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:02:52,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:02:52,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:02:52,310 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 21:02:52,341 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 21:02:52,341 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:02:52,341 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:02:52,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027207174] [2023-11-06 21:02:52,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027207174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:02:52,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:02:52,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:02:52,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725686564] [2023-11-06 21:02:52,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:02:52,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:02:52,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:02:52,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:02:52,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:02:52,345 INFO L87 Difference]: Start difference. First operand 513 states and 567 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 21:02:55,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:02:55,897 INFO L93 Difference]: Finished difference Result 512 states and 566 transitions. [2023-11-06 21:02:55,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:02:55,899 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 21:02:55,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:02:55,904 INFO L225 Difference]: With dead ends: 512 [2023-11-06 21:02:55,904 INFO L226 Difference]: Without dead ends: 512 [2023-11-06 21:02:55,905 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 21:02:55,906 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 13 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:02:55,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 897 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-06 21:02:55,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-11-06 21:02:55,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2023-11-06 21:02:55,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 281 states have (on average 1.9288256227758007) internal successors, (542), 496 states have internal predecessors, (542), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-06 21:02:55,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 566 transitions. [2023-11-06 21:02:55,936 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 566 transitions. Word has length 3 [2023-11-06 21:02:55,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:02:55,937 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 566 transitions. [2023-11-06 21:02:55,937 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 21:02:55,937 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 566 transitions. [2023-11-06 21:02:55,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 21:02:55,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:02:55,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 21:02:55,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/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)] Forceful destruction successful, exit code 0 [2023-11-06 21:02:56,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/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 21:02:56,154 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 216 more)] === [2023-11-06 21:02:56,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:02:56,154 INFO L85 PathProgramCache]: Analyzing trace with hash 2032468745, now seen corresponding path program 1 times [2023-11-06 21:02:56,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:02:56,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465697777] [2023-11-06 21:02:56,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:02:56,156 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 21:02:56,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:02:56,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/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 21:02:56,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeff126a-8ed8-46f0-9290-5157e056a799/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 21:02:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:02:56,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:02:56,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:02:56,404 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 21:02:56,546 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 21:02:56,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:02:56,547 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:02:56,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465697777] [2023-11-06 21:02:56,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465697777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:02:56,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:02:56,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:02:56,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411310723] [2023-11-06 21:02:56,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:02:56,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:02:56,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:02:56,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:02:56,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:02:56,549 INFO L87 Difference]: Start difference. First operand 512 states and 566 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)