./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e9935ba6b05a3c7e4f0c65d8e33bc471835cb8eb350ac893c3dd9a00ab8c4f5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:10:15,485 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:10:15,596 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 04:10:15,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:10:15,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:10:15,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:10:15,648 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:10:15,648 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:10:15,649 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:10:15,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:10:15,655 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:10:15,656 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:10:15,657 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:10:15,659 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:10:15,659 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:10:15,660 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:10:15,660 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:10:15,660 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:10:15,661 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:10:15,662 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:10:15,662 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:10:15,663 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:10:15,663 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:10:15,664 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:10:15,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:10:15,665 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:10:15,666 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:10:15,666 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:10:15,667 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:10:15,667 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:10:15,669 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:10:15,669 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:10:15,669 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:10:15,670 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:10:15,670 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:10:15,670 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:10:15,671 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:10:15,671 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:10:15,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:10:15,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:10:15,672 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:10:15,672 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:10:15,673 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:10:15,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:10:15,674 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:10:15,674 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:10:15,674 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_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e9935ba6b05a3c7e4f0c65d8e33bc471835cb8eb350ac893c3dd9a00ab8c4f5 [2023-11-19 04:10:15,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:10:16,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:10:16,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:10:16,020 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:10:16,026 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:10:16,028 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl.i [2023-11-19 04:10:19,176 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:10:19,646 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:10:19,646 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl.i [2023-11-19 04:10:19,694 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/data/cf9fa4047/7da9ccce2beb414eb19477d523c6bd78/FLAG54b6613e0 [2023-11-19 04:10:19,711 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/data/cf9fa4047/7da9ccce2beb414eb19477d523c6bd78 [2023-11-19 04:10:19,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:10:19,722 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:10:19,729 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:10:19,729 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:10:19,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:10:19,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:10:19" (1/1) ... [2023-11-19 04:10:19,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d7dd7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:19, skipping insertion in model container [2023-11-19 04:10:19,736 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:10:19" (1/1) ... [2023-11-19 04:10:19,834 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:10:21,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:10:21,728 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-19 04:10:21,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3108c0df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:21, skipping insertion in model container [2023-11-19 04:10:21,729 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:10:21,729 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 04:10:21,742 INFO L158 Benchmark]: Toolchain (without parser) took 2008.28ms. Allocated memory is still 148.9MB. Free memory was 107.8MB in the beginning and 63.8MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-19 04:10:21,742 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 75.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:10:21,743 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2000.58ms. Allocated memory is still 148.9MB. Free memory was 107.8MB in the beginning and 64.4MB in the end (delta: 43.4MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-19 04:10:21,744 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 75.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2000.58ms. Allocated memory is still 148.9MB. Free memory was 107.8MB in the beginning and 64.4MB in the end (delta: 43.4MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2975]: 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_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e9935ba6b05a3c7e4f0c65d8e33bc471835cb8eb350ac893c3dd9a00ab8c4f5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:10:24,081 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:10:24,176 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 04:10:24,182 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:10:24,183 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:10:24,222 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:10:24,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:10:24,223 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:10:24,224 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:10:24,225 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:10:24,225 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:10:24,226 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:10:24,226 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:10:24,227 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:10:24,228 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:10:24,228 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:10:24,229 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:10:24,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:10:24,230 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:10:24,231 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:10:24,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:10:24,232 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:10:24,232 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:10:24,233 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:10:24,233 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:10:24,234 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:10:24,234 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:10:24,235 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:10:24,235 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:10:24,236 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:10:24,236 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:10:24,236 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:10:24,237 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:10:24,237 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:10:24,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:10:24,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:10:24,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:10:24,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:10:24,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:10:24,240 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:10:24,240 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:10:24,241 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:10:24,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:10:24,242 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_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e9935ba6b05a3c7e4f0c65d8e33bc471835cb8eb350ac893c3dd9a00ab8c4f5 [2023-11-19 04:10:24,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:10:24,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:10:24,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:10:24,636 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:10:24,636 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:10:24,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl.i [2023-11-19 04:10:27,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:10:28,308 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:10:28,310 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl.i [2023-11-19 04:10:28,346 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/data/e900284b0/a6575d88c2dc4f50b2460555bcb3e7b2/FLAG3bcd7e5e8 [2023-11-19 04:10:28,361 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/data/e900284b0/a6575d88c2dc4f50b2460555bcb3e7b2 [2023-11-19 04:10:28,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:10:28,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:10:28,367 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:10:28,367 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:10:28,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:10:28,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:10:28" (1/1) ... [2023-11-19 04:10:28,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382bc384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:28, skipping insertion in model container [2023-11-19 04:10:28,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:10:28" (1/1) ... [2023-11-19 04:10:28,465 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:10:29,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:10:30,001 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:10:30,036 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:10:30,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:10:30,234 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:10:30,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:10:30,676 WARN L675 CHandler]: The function __VERIFIER_nondet_sector_t is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:10:30,684 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:10:30,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:30 WrapperNode [2023-11-19 04:10:30,686 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:10:30,687 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:10:30,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:10:30,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:10:30,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:30" (1/1) ... [2023-11-19 04:10:30,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:30" (1/1) ... [2023-11-19 04:10:30,929 INFO L138 Inliner]: procedures = 482, calls = 840, calls flagged for inlining = 55, calls inlined = 37, statements flattened = 985 [2023-11-19 04:10:30,935 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:10:30,936 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:10:30,937 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:10:30,937 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:10:30,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:30" (1/1) ... [2023-11-19 04:10:30,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:30" (1/1) ... [2023-11-19 04:10:30,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:30" (1/1) ... [2023-11-19 04:10:30,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:30" (1/1) ... [2023-11-19 04:10:31,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:30" (1/1) ... [2023-11-19 04:10:31,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:30" (1/1) ... [2023-11-19 04:10:31,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:30" (1/1) ... [2023-11-19 04:10:31,073 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:30" (1/1) ... [2023-11-19 04:10:31,101 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:10:31,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:10:31,107 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:10:31,107 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:10:31,108 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:30" (1/1) ... [2023-11-19 04:10:31,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:10:31,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:10:31,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:10:31,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:10:31,205 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2023-11-19 04:10:31,205 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2023-11-19 04:10:31,205 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-19 04:10:31,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-19 04:10:31,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 04:10:31,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2023-11-19 04:10:31,206 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 04:10:31,206 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 04:10:31,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:10:31,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-11-19 04:10:31,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:10:31,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-19 04:10:31,209 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-19 04:10:31,209 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-19 04:10:31,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 04:10:31,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2023-11-19 04:10:31,210 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2023-11-19 04:10:31,210 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2023-11-19 04:10:31,211 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-19 04:10:31,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-19 04:10:31,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:10:31,212 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2023-11-19 04:10:31,212 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2023-11-19 04:10:31,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:10:31,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:10:31,213 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 04:10:31,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 04:10:31,213 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2023-11-19 04:10:31,214 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2023-11-19 04:10:31,214 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2023-11-19 04:10:31,214 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2023-11-19 04:10:31,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:10:31,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:10:31,215 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2023-11-19 04:10:31,215 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2023-11-19 04:10:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-11-19 04:10:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:10:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-11-19 04:10:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:10:31,217 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:10:31,217 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:10:31,217 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-11-19 04:10:31,217 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-11-19 04:10:31,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:10:31,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:10:31,218 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-19 04:10:31,218 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-19 04:10:31,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-19 04:10:31,218 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-11-19 04:10:31,218 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-11-19 04:10:31,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-19 04:10:31,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-11-19 04:10:31,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:10:31,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:10:31,219 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 04:10:31,220 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 04:10:31,220 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-19 04:10:31,220 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-19 04:10:31,220 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-19 04:10:31,221 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-19 04:10:31,221 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-11-19 04:10:31,221 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-11-19 04:10:31,222 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2023-11-19 04:10:31,222 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2023-11-19 04:10:31,223 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2023-11-19 04:10:31,223 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2023-11-19 04:10:31,223 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-19 04:10:31,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-19 04:10:31,223 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2023-11-19 04:10:31,223 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2023-11-19 04:10:31,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-19 04:10:31,224 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2023-11-19 04:10:31,224 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2023-11-19 04:10:31,225 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-19 04:10:31,225 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-19 04:10:31,225 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2023-11-19 04:10:31,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2023-11-19 04:10:31,658 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:10:31,662 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:10:37,378 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:10:37,406 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:10:37,406 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 04:10:37,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:10:37 BoogieIcfgContainer [2023-11-19 04:10:37,415 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:10:37,417 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:10:37,418 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:10:37,421 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:10:37,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:10:28" (1/3) ... [2023-11-19 04:10:37,422 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127ef590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:10:37, skipping insertion in model container [2023-11-19 04:10:37,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:30" (2/3) ... [2023-11-19 04:10:37,422 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127ef590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:10:37, skipping insertion in model container [2023-11-19 04:10:37,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:10:37" (3/3) ... [2023-11-19 04:10:37,424 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inl.i [2023-11-19 04:10:37,443 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:10:37,443 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2023-11-19 04:10:37,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:10:37,509 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;@10d6f106, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:10:37,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2023-11-19 04:10:37,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 665 states, 355 states have (on average 1.819718309859155) internal successors, (646), 566 states have internal predecessors, (646), 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) [2023-11-19 04:10:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:10:37,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:37,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:10:37,526 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)] === [2023-11-19 04:10:37,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:37,532 INFO L85 PathProgramCache]: Analyzing trace with hash 331999555, now seen corresponding path program 1 times [2023-11-19 04:10:37,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:10:37,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496033527] [2023-11-19 04:10:37,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:37,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:10:37,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:10:37,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:10:37,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 04:10:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:38,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:10:38,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:10:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:10:38,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:10:38,382 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:10:38,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496033527] [2023-11-19 04:10:38,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496033527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:38,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:10:38,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:10:38,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873392907] [2023-11-19 04:10:38,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:38,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:10:38,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:10:38,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:10:38,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:10:38,513 INFO L87 Difference]: Start difference. First operand has 665 states, 355 states have (on average 1.819718309859155) internal successors, (646), 566 states have internal predecessors, (646), 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, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-19 04:10:40,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:10:42,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:10:46,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:46,192 INFO L93 Difference]: Finished difference Result 1202 states and 1439 transitions. [2023-11-19 04:10:46,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:10:46,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 5 [2023-11-19 04:10:46,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:46,217 INFO L225 Difference]: With dead ends: 1202 [2023-11-19 04:10:46,217 INFO L226 Difference]: Without dead ends: 1198 [2023-11-19 04:10:46,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:10:46,222 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 685 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:46,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 2219 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1111 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2023-11-19 04:10:46,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2023-11-19 04:10:46,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 985. [2023-11-19 04:10:46,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 592 states have (on average 1.802364864864865) internal successors, (1067), 814 states have internal predecessors, (1067), 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) [2023-11-19 04:10:46,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1343 transitions. [2023-11-19 04:10:46,338 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1343 transitions. Word has length 5 [2023-11-19 04:10:46,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:46,338 INFO L495 AbstractCegarLoop]: Abstraction has 985 states and 1343 transitions. [2023-11-19 04:10:46,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-19 04:10:46,339 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1343 transitions. [2023-11-19 04:10:46,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:10:46,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:46,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:10:46,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:10:46,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:10:46,546 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)] === [2023-11-19 04:10:46,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:46,546 INFO L85 PathProgramCache]: Analyzing trace with hash 331999556, now seen corresponding path program 1 times [2023-11-19 04:10:46,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:10:46,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895630281] [2023-11-19 04:10:46,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:46,547 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:10:46,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:10:46,550 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:10:46,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 04:10:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:47,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:10:47,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:10:47,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:10:47,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:10:47,314 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:10:47,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895630281] [2023-11-19 04:10:47,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895630281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:47,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:10:47,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:10:47,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770172910] [2023-11-19 04:10:47,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:47,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:10:47,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:10:47,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:10:47,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:10:47,317 INFO L87 Difference]: Start difference. First operand 985 states and 1343 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-19 04:10:49,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:10:51,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:10:54,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:54,679 INFO L93 Difference]: Finished difference Result 1117 states and 1435 transitions. [2023-11-19 04:10:54,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:10:54,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 5 [2023-11-19 04:10:54,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:54,690 INFO L225 Difference]: With dead ends: 1117 [2023-11-19 04:10:54,691 INFO L226 Difference]: Without dead ends: 1117 [2023-11-19 04:10:54,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:10:54,692 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 268 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:54,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 2589 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 865 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2023-11-19 04:10:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2023-11-19 04:10:54,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1058. [2023-11-19 04:10:54,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 633 states have (on average 1.764612954186414) internal successors, (1117), 856 states have internal predecessors, (1117), 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) [2023-11-19 04:10:54,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1431 transitions. [2023-11-19 04:10:54,789 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1431 transitions. Word has length 5 [2023-11-19 04:10:54,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:54,789 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 1431 transitions. [2023-11-19 04:10:54,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-19 04:10:54,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1431 transitions. [2023-11-19 04:10:54,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:10:54,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:54,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:54,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:10:54,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:10:55,000 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)] === [2023-11-19 04:10:55,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:55,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1852094909, now seen corresponding path program 1 times [2023-11-19 04:10:55,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:10:55,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306824341] [2023-11-19 04:10:55,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:55,002 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:10:55,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:10:55,004 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:10:55,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 04:10:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:55,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:10:55,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:10:55,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:10:55,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:10:55,652 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:10:55,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306824341] [2023-11-19 04:10:55,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306824341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:55,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:10:55,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:10:55,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484998350] [2023-11-19 04:10:55,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:55,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:10:55,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:10:55,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:10:55,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:10:55,655 INFO L87 Difference]: Start difference. First operand 1058 states and 1431 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-19 04:10:57,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:57,370 INFO L93 Difference]: Finished difference Result 1264 states and 1518 transitions. [2023-11-19 04:10:57,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:10:57,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 11 [2023-11-19 04:10:57,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:57,379 INFO L225 Difference]: With dead ends: 1264 [2023-11-19 04:10:57,379 INFO L226 Difference]: Without dead ends: 1264 [2023-11-19 04:10:57,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:10:57,381 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 658 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:57,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1227 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 04:10:57,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2023-11-19 04:10:57,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1057. [2023-11-19 04:10:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 633 states have (on average 1.7567140600315956) internal successors, (1112), 855 states have internal predecessors, (1112), 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) [2023-11-19 04:10:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1426 transitions. [2023-11-19 04:10:57,490 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1426 transitions. Word has length 11 [2023-11-19 04:10:57,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:57,491 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1426 transitions. [2023-11-19 04:10:57,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-19 04:10:57,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1426 transitions. [2023-11-19 04:10:57,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:10:57,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:57,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:57,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:10:57,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:10:57,701 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)] === [2023-11-19 04:10:57,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:57,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1852094908, now seen corresponding path program 1 times [2023-11-19 04:10:57,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:10:57,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296839401] [2023-11-19 04:10:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:57,704 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:10:57,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:10:57,705 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:10:57,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 04:10:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:58,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:10:58,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:10:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:10:58,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:10:58,490 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:10:58,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296839401] [2023-11-19 04:10:58,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296839401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:58,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:10:58,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:10:58,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557511004] [2023-11-19 04:10:58,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:58,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:10:58,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:10:58,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:10:58,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:10:58,493 INFO L87 Difference]: Start difference. First operand 1057 states and 1426 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 04:11:00,523 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 [] [2023-11-19 04:11:02,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:02,616 INFO L93 Difference]: Finished difference Result 1123 states and 1441 transitions. [2023-11-19 04:11:02,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:11:02,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 11 [2023-11-19 04:11:02,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:02,625 INFO L225 Difference]: With dead ends: 1123 [2023-11-19 04:11:02,625 INFO L226 Difference]: Without dead ends: 1123 [2023-11-19 04:11:02,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:11:02,627 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 268 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:02,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 1493 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 421 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-11-19 04:11:02,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2023-11-19 04:11:02,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1060. [2023-11-19 04:11:02,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 636 states have (on average 1.7531446540880504) internal successors, (1115), 858 states have internal predecessors, (1115), 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) [2023-11-19 04:11:02,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1429 transitions. [2023-11-19 04:11:02,675 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1429 transitions. Word has length 11 [2023-11-19 04:11:02,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:02,675 INFO L495 AbstractCegarLoop]: Abstraction has 1060 states and 1429 transitions. [2023-11-19 04:11:02,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 04:11:02,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1429 transitions. [2023-11-19 04:11:02,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 04:11:02,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:02,677 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:11:02,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:11:02,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:11:02,885 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-19 04:11:02,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:02,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1685719407, now seen corresponding path program 1 times [2023-11-19 04:11:02,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:11:02,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133910102] [2023-11-19 04:11:02,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:02,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:11:02,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:11:02,887 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:11:02,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 04:11:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:03,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:11:03,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:11:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:03,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:11:03,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:03,952 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:11:03,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133910102] [2023-11-19 04:11:03,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133910102] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:11:03,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1138291200] [2023-11-19 04:11:03,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:03,952 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:11:03,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:11:03,960 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:11:03,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-19 04:11:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:04,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:11:04,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:11:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:05,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:11:05,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:05,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1138291200] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:11:05,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744377264] [2023-11-19 04:11:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:05,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:11:05,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:11:05,308 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:11:05,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a769a7e4-9d08-4c21-88e2-c9d0b51d260f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:11:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:05,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:11:05,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:11:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:06,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:11:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:06,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744377264] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:11:06,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 04:11:06,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3, 4, 3, 4] total 7 [2023-11-19 04:11:06,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445399831] [2023-11-19 04:11:06,159 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 04:11:06,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:11:06,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:11:06,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:11:06,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:11:06,161 INFO L87 Difference]: Start difference. First operand 1060 states and 1429 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 04:11:08,189 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 [] [2023-11-19 04:11:10,193 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 []