./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl_p.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 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_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl_p.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire --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 32bit --witnessprinter.graph.data.programhash 822210afb67ed99ceea45b432aca8ec250ff4c38d2893c644887ddfbc667fadf --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:32:08,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:32:08,272 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-23 21:32:08,276 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:32:08,277 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:32:08,304 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:32:08,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:32:08,305 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:32:08,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:32:08,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:32:08,307 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:32:08,308 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:32:08,308 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:32:08,309 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:32:08,310 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:32:08,310 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:32:08,311 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:32:08,311 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:32:08,312 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:32:08,313 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:32:08,313 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:32:08,314 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:32:08,315 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:32:08,316 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:32:08,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:32:08,317 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:32:08,317 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:32:08,318 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:32:08,319 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:32:08,319 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:32:08,320 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:32:08,320 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:32:08,321 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:32:08,321 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:32:08,322 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:32:08,322 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:32:08,323 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:32:08,323 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:32:08,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:32:08,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:32:08,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:08,326 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:32:08,326 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:32:08,326 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:32:08,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:32:08,327 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:32:08,328 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:32:08,328 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:32:08,329 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_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 822210afb67ed99ceea45b432aca8ec250ff4c38d2893c644887ddfbc667fadf [2023-11-23 21:32:08,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:32:08,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:32:08,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:32:08,636 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:32:08,637 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:32:08,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl_p.i [2023-11-23 21:32:12,049 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:32:12,453 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:32:12,454 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl_p.i [2023-11-23 21:32:12,484 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/data/037f672d5/2ca3d2b960784e288e948da24d17cf64/FLAGa6149b46d [2023-11-23 21:32:12,499 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/data/037f672d5/2ca3d2b960784e288e948da24d17cf64 [2023-11-23 21:32:12,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:32:12,503 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:32:12,505 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:12,505 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:32:12,510 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:32:12,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:12" (1/1) ... [2023-11-23 21:32:12,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4f36b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:12, skipping insertion in model container [2023-11-23 21:32:12,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:12" (1/1) ... [2023-11-23 21:32:12,606 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:32:14,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:14,473 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) [2023-11-23 21:32:14,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5eeca978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:14, skipping insertion in model container [2023-11-23 21:32:14,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:14,475 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 21:32:14,477 INFO L158 Benchmark]: Toolchain (without parser) took 1972.77ms. Allocated memory was 136.3MB in the beginning and 174.1MB in the end (delta: 37.7MB). Free memory was 87.2MB in the beginning and 125.0MB in the end (delta: -37.8MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2023-11-23 21:32:14,478 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 136.3MB. Free memory is still 109.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:32:14,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1970.14ms. Allocated memory was 136.3MB in the beginning and 174.1MB in the end (delta: 37.7MB). Free memory was 87.2MB in the beginning and 125.0MB in the end (delta: -37.8MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2023-11-23 21:32:14,483 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 136.3MB. Free memory is still 109.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1970.14ms. Allocated memory was 136.3MB in the beginning and 174.1MB in the end (delta: 37.7MB). Free memory was 87.2MB in the beginning and 125.0MB in the end (delta: -37.8MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2978]: 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_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl_p.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire --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 32bit --witnessprinter.graph.data.programhash 822210afb67ed99ceea45b432aca8ec250ff4c38d2893c644887ddfbc667fadf --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:32:17,066 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:32:17,180 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-23 21:32:17,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:32:17,203 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:32:17,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:32:17,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:32:17,248 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:32:17,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:32:17,249 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:32:17,250 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:32:17,250 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:32:17,251 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:32:17,251 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:32:17,252 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:32:17,253 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:32:17,254 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:32:17,254 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:32:17,255 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:32:17,255 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:32:17,256 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:32:17,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:32:17,257 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:32:17,258 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:32:17,258 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:32:17,259 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:32:17,259 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:32:17,260 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:32:17,260 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:32:17,261 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:32:17,261 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:32:17,262 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:32:17,262 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:32:17,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:32:17,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:32:17,263 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:32:17,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:32:17,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:17,264 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:32:17,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:32:17,264 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:32:17,265 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:32:17,265 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:32:17,265 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:32:17,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:32:17,266 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_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 822210afb67ed99ceea45b432aca8ec250ff4c38d2893c644887ddfbc667fadf [2023-11-23 21:32:17,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:32:17,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:32:17,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:32:17,691 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:32:17,692 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:32:17,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl_p.i [2023-11-23 21:32:21,139 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:32:21,797 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:32:21,801 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl_p.i [2023-11-23 21:32:21,851 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/data/0514989b9/e27f96ad6b13430598a8b09079e1599f/FLAG238d469b8 [2023-11-23 21:32:21,875 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/data/0514989b9/e27f96ad6b13430598a8b09079e1599f [2023-11-23 21:32:21,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:32:21,885 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:32:21,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:21,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:32:21,893 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:32:21,896 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:21" (1/1) ... [2023-11-23 21:32:21,897 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61eff94b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:21, skipping insertion in model container [2023-11-23 21:32:21,898 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:21" (1/1) ... [2023-11-23 21:32:22,039 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:32:23,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:23,888 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 21:32:23,929 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:32:24,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:24,245 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:32:24,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:24,615 WARN L675 CHandler]: The function __VERIFIER_nondet_sector_t is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:24,623 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:32:24,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:24 WrapperNode [2023-11-23 21:32:24,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:24,628 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:24,629 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:32:24,629 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:32:24,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:24" (1/1) ... [2023-11-23 21:32:24,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:24" (1/1) ... [2023-11-23 21:32:24,830 INFO L138 Inliner]: procedures = 482, calls = 840, calls flagged for inlining = 55, calls inlined = 37, statements flattened = 985 [2023-11-23 21:32:24,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:24,832 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:32:24,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:32:24,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:32:24,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:24" (1/1) ... [2023-11-23 21:32:24,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:24" (1/1) ... [2023-11-23 21:32:24,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:24" (1/1) ... [2023-11-23 21:32:24,853 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:24" (1/1) ... [2023-11-23 21:32:24,917 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:24" (1/1) ... [2023-11-23 21:32:24,925 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:24" (1/1) ... [2023-11-23 21:32:24,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:24" (1/1) ... [2023-11-23 21:32:24,973 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:24" (1/1) ... [2023-11-23 21:32:24,996 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:32:24,997 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:32:24,997 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:32:24,997 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:32:24,998 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:24" (1/1) ... [2023-11-23 21:32:25,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:25,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:32:25,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:32:25,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:32:25,092 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2023-11-23 21:32:25,092 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2023-11-23 21:32:25,092 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-23 21:32:25,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-23 21:32:25,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:32:25,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2023-11-23 21:32:25,094 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:32:25,095 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:32:25,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:32:25,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-11-23 21:32:25,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:32:25,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-23 21:32:25,096 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 21:32:25,096 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 21:32:25,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:32:25,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2023-11-23 21:32:25,097 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2023-11-23 21:32:25,098 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2023-11-23 21:32:25,098 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-23 21:32:25,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-23 21:32:25,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:32:25,098 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2023-11-23 21:32:25,099 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2023-11-23 21:32:25,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:32:25,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:32:25,100 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:32:25,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:32:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2023-11-23 21:32:25,101 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2023-11-23 21:32:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2023-11-23 21:32:25,101 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2023-11-23 21:32:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:32:25,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:32:25,102 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2023-11-23 21:32:25,103 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2023-11-23 21:32:25,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-11-23 21:32:25,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 21:32:25,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-11-23 21:32:25,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:32:25,103 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:32:25,104 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:32:25,104 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-11-23 21:32:25,104 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-11-23 21:32:25,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:32:25,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:32:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-23 21:32:25,105 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-23 21:32:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-23 21:32:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-11-23 21:32:25,105 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-11-23 21:32:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-23 21:32:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-11-23 21:32:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 21:32:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:32:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:32:25,107 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:32:25,107 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-23 21:32:25,107 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-23 21:32:25,107 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-23 21:32:25,108 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-23 21:32:25,109 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-11-23 21:32:25,109 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-11-23 21:32:25,109 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2023-11-23 21:32:25,109 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2023-11-23 21:32:25,110 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2023-11-23 21:32:25,110 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2023-11-23 21:32:25,110 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-23 21:32:25,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-23 21:32:25,110 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2023-11-23 21:32:25,110 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2023-11-23 21:32:25,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-23 21:32:25,111 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2023-11-23 21:32:25,111 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2023-11-23 21:32:25,111 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 21:32:25,111 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 21:32:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2023-11-23 21:32:25,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2023-11-23 21:32:25,539 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:32:25,542 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:32:30,635 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:32:30,900 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:32:30,901 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 21:32:30,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:32:30 BoogieIcfgContainer [2023-11-23 21:32:30,903 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:32:30,905 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:32:30,905 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:32:30,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:32:30,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:32:21" (1/3) ... [2023-11-23 21:32:30,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431a8bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:32:30, skipping insertion in model container [2023-11-23 21:32:30,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:24" (2/3) ... [2023-11-23 21:32:30,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431a8bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:32:30, skipping insertion in model container [2023-11-23 21:32:30,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:32:30" (3/3) ... [2023-11-23 21:32:30,916 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inl_p.i [2023-11-23 21:32:30,938 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:32:30,939 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2023-11-23 21:32:31,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:32:31,032 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;@2cef34c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:32:31,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2023-11-23 21:32:31,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 603 states, 293 states have (on average 1.993174061433447) internal successors, (584), 504 states have internal predecessors, (584), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-23 21:32:31,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:32:31,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:31,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:32:31,069 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-23 21:32:31,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:31,109 INFO L85 PathProgramCache]: Analyzing trace with hash 40286083, now seen corresponding path program 1 times [2023-11-23 21:32:31,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:31,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502400652] [2023-11-23 21:32:31,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:31,136 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 [2023-11-23 21:32:31,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:31,141 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:32:31,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:32:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:31,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:32:31,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:32,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:32,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:32,038 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:32,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502400652] [2023-11-23 21:32:32,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502400652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:32,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:32,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:32,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863988031] [2023-11-23 21:32:32,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:32,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:32:32,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:32,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:32:32,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:32:32,096 INFO L87 Difference]: Start difference. First operand has 603 states, 293 states have (on average 1.993174061433447) internal successors, (584), 504 states have internal predecessors, (584), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:34,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:32:36,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:32:38,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:32:42,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:42,845 INFO L93 Difference]: Finished difference Result 1091 states and 1328 transitions. [2023-11-23 21:32:42,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:32:42,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-23 21:32:42,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:42,890 INFO L225 Difference]: With dead ends: 1091 [2023-11-23 21:32:42,890 INFO L226 Difference]: Without dead ends: 1089 [2023-11-23 21:32:42,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:32:42,896 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 632 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:42,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1970 Invalid, 1256 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1249 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2023-11-23 21:32:42,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2023-11-23 21:32:43,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 883. [2023-11-23 21:32:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 490 states have (on average 1.969387755102041) internal successors, (965), 712 states have internal predecessors, (965), 138 states have call successors, (138), 50 states have call predecessors, (138), 50 states have return successors, (138), 131 states have call predecessors, (138), 138 states have call successors, (138) [2023-11-23 21:32:43,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1241 transitions. [2023-11-23 21:32:43,066 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1241 transitions. Word has length 4 [2023-11-23 21:32:43,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:43,066 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1241 transitions. [2023-11-23 21:32:43,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:43,067 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1241 transitions. [2023-11-23 21:32:43,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:32:43,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:43,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:32:43,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:32:43,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:32:43,275 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-23 21:32:43,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:43,277 INFO L85 PathProgramCache]: Analyzing trace with hash 40286084, now seen corresponding path program 1 times [2023-11-23 21:32:43,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:43,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727509426] [2023-11-23 21:32:43,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:43,279 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 [2023-11-23 21:32:43,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:43,281 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:32:43,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:32:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:44,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:32:44,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:44,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:44,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:44,167 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:44,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727509426] [2023-11-23 21:32:44,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727509426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:44,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:44,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:44,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323112910] [2023-11-23 21:32:44,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:44,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:32:44,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:44,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:32:44,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:32:44,171 INFO L87 Difference]: Start difference. First operand 883 states and 1241 transitions. Second operand has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:46,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:32:48,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:32:50,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:32:55,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:55,117 INFO L93 Difference]: Finished difference Result 1004 states and 1322 transitions. [2023-11-23 21:32:55,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:32:55,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-23 21:32:55,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:55,130 INFO L225 Difference]: With dead ends: 1004 [2023-11-23 21:32:55,130 INFO L226 Difference]: Without dead ends: 1004 [2023-11-23 21:32:55,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:32:55,132 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 245 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:55,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 2156 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1002 Invalid, 3 Unknown, 0 Unchecked, 10.7s Time] [2023-11-23 21:32:55,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-11-23 21:32:55,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 946. [2023-11-23 21:32:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 521 states have (on average 1.9289827255278311) internal successors, (1005), 744 states have internal predecessors, (1005), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-23 21:32:55,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1319 transitions. [2023-11-23 21:32:55,211 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1319 transitions. Word has length 4 [2023-11-23 21:32:55,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:55,211 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1319 transitions. [2023-11-23 21:32:55,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:55,212 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1319 transitions. [2023-11-23 21:32:55,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:32:55,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:55,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:55,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:32:55,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:32:55,421 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-23 21:32:55,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:55,422 INFO L85 PathProgramCache]: Analyzing trace with hash -139118584, now seen corresponding path program 1 times [2023-11-23 21:32:55,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:55,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230021214] [2023-11-23 21:32:55,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:55,423 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 [2023-11-23 21:32:55,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:55,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:32:55,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:32:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:56,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:32:56,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:56,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:56,332 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:56,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230021214] [2023-11-23 21:32:56,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230021214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:56,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:56,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:32:56,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175667000] [2023-11-23 21:32:56,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:56,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:56,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:56,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:56,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:56,336 INFO L87 Difference]: Start difference. First operand 946 states and 1319 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:32:58,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:00,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:00,716 INFO L93 Difference]: Finished difference Result 1145 states and 1399 transitions. [2023-11-23 21:33:00,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:00,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-23 21:33:00,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:00,727 INFO L225 Difference]: With dead ends: 1145 [2023-11-23 21:33:00,727 INFO L226 Difference]: Without dead ends: 1145 [2023-11-23 21:33:00,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:00,729 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 609 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:00,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1029 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 457 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2023-11-23 21:33:00,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2023-11-23 21:33:00,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 945. [2023-11-23 21:33:00,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 521 states have (on average 1.9193857965451055) internal successors, (1000), 743 states have internal predecessors, (1000), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-23 21:33:00,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1314 transitions. [2023-11-23 21:33:00,786 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1314 transitions. Word has length 9 [2023-11-23 21:33:00,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:00,787 INFO L495 AbstractCegarLoop]: Abstraction has 945 states and 1314 transitions. [2023-11-23 21:33:00,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:33:00,788 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1314 transitions. [2023-11-23 21:33:00,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:33:00,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:00,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:00,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:33:00,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:33:00,998 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-23 21:33:00,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:00,999 INFO L85 PathProgramCache]: Analyzing trace with hash -139118583, now seen corresponding path program 1 times [2023-11-23 21:33:01,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:01,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687035000] [2023-11-23 21:33:01,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:01,000 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 [2023-11-23 21:33:01,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:01,002 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:33:01,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdfd2a0b-16bb-4b62-a598-8ad809c9664c/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:33:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:01,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:33:01,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:01,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:01,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:01,900 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:01,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687035000] [2023-11-23 21:33:01,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687035000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:01,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:01,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:33:01,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605589023] [2023-11-23 21:33:01,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:01,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:33:01,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:01,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:33:01,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:33:01,903 INFO L87 Difference]: Start difference. First operand 945 states and 1314 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:33:03,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []