./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 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_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:22:29,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:22:30,085 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-23 21:22:30,094 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:22:30,096 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:22:30,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:22:30,120 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:22:30,121 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:22:30,122 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:22:30,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:22:30,123 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:22:30,123 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:22:30,124 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:22:30,124 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:22:30,125 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:22:30,126 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:22:30,126 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:22:30,127 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:22:30,127 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:22:30,128 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:22:30,128 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:22:30,129 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:22:30,130 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:22:30,130 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:22:30,131 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:22:30,131 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:22:30,132 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:22:30,132 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:22:30,132 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:22:30,133 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:22:30,133 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:22:30,134 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:22:30,134 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:22:30,135 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:22:30,135 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:22:30,135 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:22:30,136 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:22:30,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:22:30,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:22:30,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:22:30,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:30,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:22:30,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:22:30,139 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:22:30,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:22:30,140 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:22:30,140 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:22:30,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:22:30,141 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_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de [2023-11-23 21:22:30,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:22:30,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:22:30,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:22:30,479 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:22:30,480 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:22:30,481 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2023-11-23 21:22:33,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:22:34,129 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:22:34,130 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2023-11-23 21:22:34,168 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/data/5ecb5951f/27b7196e160a41b5968dca80386d508a/FLAGbd4544191 [2023-11-23 21:22:34,187 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/data/5ecb5951f/27b7196e160a41b5968dca80386d508a [2023-11-23 21:22:34,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:22:34,194 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:22:34,196 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:34,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:22:34,202 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:22:34,203 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:34" (1/1) ... [2023-11-23 21:22:34,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@190ba710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:34, skipping insertion in model container [2023-11-23 21:22:34,205 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:34" (1/1) ... [2023-11-23 21:22:34,305 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:35,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:36,041 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-23 21:22:36,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7dbf5e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:36, skipping insertion in model container [2023-11-23 21:22:36,043 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:36,044 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 21:22:36,046 INFO L158 Benchmark]: Toolchain (without parser) took 1851.09ms. Allocated memory is still 138.4MB. Free memory was 93.2MB in the beginning and 89.1MB in the end (delta: 4.1MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2023-11-23 21:22:36,047 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 98.6MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:36,048 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1848.01ms. Allocated memory is still 138.4MB. Free memory was 92.9MB in the beginning and 89.1MB in the end (delta: 3.9MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2023-11-23 21:22:36,051 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 98.6MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1848.01ms. Allocated memory is still 138.4MB. Free memory was 92.9MB in the beginning and 89.1MB in the end (delta: 3.9MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2976]: 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_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:22:38,613 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:22:38,729 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-23 21:22:38,737 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:22:38,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:22:38,814 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:22:38,815 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:22:38,815 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:22:38,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:22:38,821 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:22:38,822 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:22:38,823 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:22:38,823 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:22:38,825 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:22:38,825 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:22:38,826 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:22:38,827 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:22:38,827 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:22:38,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:22:38,829 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:22:38,830 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:22:38,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:22:38,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:22:38,831 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:22:38,832 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:22:38,832 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:22:38,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:22:38,833 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:22:38,833 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:22:38,834 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:22:38,835 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:22:38,836 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:22:38,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:22:38,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:22:38,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:22:38,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:22:38,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:22:38,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:38,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:22:38,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:22:38,839 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:22:38,840 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:22:38,840 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:22:38,840 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:22:38,841 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:22:38,841 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_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de [2023-11-23 21:22:39,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:22:39,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:22:39,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:22:39,335 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:22:39,336 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:22:39,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2023-11-23 21:22:42,691 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:22:43,207 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:22:43,208 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2023-11-23 21:22:43,252 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/data/8ce9371dc/1a8d5b75a12b4c01834821fd66dc8e00/FLAG1b9da3742 [2023-11-23 21:22:43,269 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/data/8ce9371dc/1a8d5b75a12b4c01834821fd66dc8e00 [2023-11-23 21:22:43,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:22:43,276 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:22:43,281 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:43,282 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:22:43,287 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:22:43,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:43" (1/1) ... [2023-11-23 21:22:43,289 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b4f6bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:43, skipping insertion in model container [2023-11-23 21:22:43,289 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:43" (1/1) ... [2023-11-23 21:22:43,398 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:44,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:44,939 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 21:22:44,978 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:45,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:45,238 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:22:45,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:45,694 WARN L675 CHandler]: The function __VERIFIER_nondet_sector_t is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:45,702 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:22:45,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:45 WrapperNode [2023-11-23 21:22:45,703 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:45,704 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:45,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:22:45,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:22:45,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:45" (1/1) ... [2023-11-23 21:22:45,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:45" (1/1) ... [2023-11-23 21:22:45,929 INFO L138 Inliner]: procedures = 482, calls = 840, calls flagged for inlining = 55, calls inlined = 39, statements flattened = 995 [2023-11-23 21:22:45,929 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:45,930 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:22:45,930 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:22:45,930 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:22:45,940 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:45" (1/1) ... [2023-11-23 21:22:45,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:45" (1/1) ... [2023-11-23 21:22:45,952 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:45" (1/1) ... [2023-11-23 21:22:45,953 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:45" (1/1) ... [2023-11-23 21:22:46,024 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:45" (1/1) ... [2023-11-23 21:22:46,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:45" (1/1) ... [2023-11-23 21:22:46,060 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:45" (1/1) ... [2023-11-23 21:22:46,080 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:45" (1/1) ... [2023-11-23 21:22:46,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:22:46,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:22:46,107 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:22:46,107 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:22:46,108 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:45" (1/1) ... [2023-11-23 21:22:46,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:46,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:46,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:22:46,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:22:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2023-11-23 21:22:46,188 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2023-11-23 21:22:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-23 21:22:46,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-23 21:22:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:22:46,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2023-11-23 21:22:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:22:46,189 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:22:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:22:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-11-23 21:22:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:22:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-23 21:22:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 21:22:46,190 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 21:22:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:22:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2023-11-23 21:22:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2023-11-23 21:22:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2023-11-23 21:22:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-23 21:22:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-23 21:22:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:22:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2023-11-23 21:22:46,192 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2023-11-23 21:22:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:22:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:22:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:22:46,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:22:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2023-11-23 21:22:46,193 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2023-11-23 21:22:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2023-11-23 21:22:46,194 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2023-11-23 21:22:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:22:46,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:22:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2023-11-23 21:22:46,194 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2023-11-23 21:22:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-11-23 21:22:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 21:22:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-11-23 21:22:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:22:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:22:46,195 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:22:46,196 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-11-23 21:22:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-11-23 21:22:46,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:22:46,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:22:46,196 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-23 21:22:46,197 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-23 21:22:46,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-23 21:22:46,197 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-11-23 21:22:46,197 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-11-23 21:22:46,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-23 21:22:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-11-23 21:22:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 21:22:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:22:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:22:46,198 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:22:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-23 21:22:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-23 21:22:46,199 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-23 21:22:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-23 21:22:46,199 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-11-23 21:22:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-11-23 21:22:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2023-11-23 21:22:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2023-11-23 21:22:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2023-11-23 21:22:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2023-11-23 21:22:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-23 21:22:46,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-23 21:22:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2023-11-23 21:22:46,201 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2023-11-23 21:22:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-23 21:22:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2023-11-23 21:22:46,202 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2023-11-23 21:22:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 21:22:46,202 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 21:22:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2023-11-23 21:22:46,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2023-11-23 21:22:46,556 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:22:46,560 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:22:51,309 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:22:51,500 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:22:51,500 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 21:22:51,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:51 BoogieIcfgContainer [2023-11-23 21:22:51,502 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:22:51,505 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:22:51,505 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:22:51,508 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:22:51,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:22:43" (1/3) ... [2023-11-23 21:22:51,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2528b139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:51, skipping insertion in model container [2023-11-23 21:22:51,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:45" (2/3) ... [2023-11-23 21:22:51,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2528b139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:51, skipping insertion in model container [2023-11-23 21:22:51,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:51" (3/3) ... [2023-11-23 21:22:51,515 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inw.i [2023-11-23 21:22:51,537 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:22:51,537 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 206 error locations. [2023-11-23 21:22:51,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:22:51,625 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;@4665fc0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:22:51,625 INFO L358 AbstractCegarLoop]: Starting to check reachability of 206 error locations. [2023-11-23 21:22:51,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 607 states, 296 states have (on average 1.989864864864865) internal successors, (589), 508 states have internal predecessors, (589), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-23 21:22:51,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:22:51,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:51,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:22:51,652 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 203 more)] === [2023-11-23 21:22:51,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:51,657 INFO L85 PathProgramCache]: Analyzing trace with hash 40867488, now seen corresponding path program 1 times [2023-11-23 21:22:51,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:51,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125455900] [2023-11-23 21:22:51,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:51,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:22:51,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:51,677 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:22:51,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:22:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:52,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:22:52,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:52,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:52,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:52,500 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:52,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125455900] [2023-11-23 21:22:52,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125455900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:52,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:52,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:22:52,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988474319] [2023-11-23 21:22:52,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:52,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:22:52,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:52,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:22:52,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:22:52,552 INFO L87 Difference]: Start difference. First operand has 607 states, 296 states have (on average 1.989864864864865) internal successors, (589), 508 states have internal predecessors, (589), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:54,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:22:56,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:22:58,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:23:02,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:02,535 INFO L93 Difference]: Finished difference Result 1099 states and 1336 transitions. [2023-11-23 21:23:02,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:23:02,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-23 21:23:02,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:02,558 INFO L225 Difference]: With dead ends: 1099 [2023-11-23 21:23:02,558 INFO L226 Difference]: Without dead ends: 1097 [2023-11-23 21:23:02,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:23:02,563 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 636 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1978 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:02,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1978 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1257 Invalid, 3 Unknown, 0 Unchecked, 9.8s Time] [2023-11-23 21:23:02,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2023-11-23 21:23:02,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 889. [2023-11-23 21:23:02,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 495 states have (on average 1.9636363636363636) internal successors, (972), 718 states have internal predecessors, (972), 138 states have call successors, (138), 50 states have call predecessors, (138), 50 states have return successors, (138), 131 states have call predecessors, (138), 138 states have call successors, (138) [2023-11-23 21:23:02,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1248 transitions. [2023-11-23 21:23:02,703 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1248 transitions. Word has length 4 [2023-11-23 21:23:02,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:02,703 INFO L495 AbstractCegarLoop]: Abstraction has 889 states and 1248 transitions. [2023-11-23 21:23:02,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:23:02,704 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1248 transitions. [2023-11-23 21:23:02,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:23:02,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:02,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:23:02,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:02,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:02,910 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 203 more)] === [2023-11-23 21:23:02,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:02,911 INFO L85 PathProgramCache]: Analyzing trace with hash 40867489, now seen corresponding path program 1 times [2023-11-23 21:23:02,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:23:02,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150603393] [2023-11-23 21:23:02,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:02,912 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:02,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:23:02,914 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:23:02,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 21:23:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:03,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:23:03,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:23:03,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:03,530 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:23:03,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150603393] [2023-11-23 21:23:03,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150603393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:03,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:03,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:03,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392710109] [2023-11-23 21:23:03,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:03,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:23:03,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:23:03,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:23:03,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:03,533 INFO L87 Difference]: Start difference. First operand 889 states and 1248 transitions. Second operand has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:23:05,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:23:07,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:23:09,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:23:13,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:13,293 INFO L93 Difference]: Finished difference Result 1014 states and 1333 transitions. [2023-11-23 21:23:13,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:23:13,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-23 21:23:13,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:13,305 INFO L225 Difference]: With dead ends: 1014 [2023-11-23 21:23:13,305 INFO L226 Difference]: Without dead ends: 1014 [2023-11-23 21:23:13,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:23:13,307 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 249 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:13,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 2164 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1010 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2023-11-23 21:23:13,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2023-11-23 21:23:13,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 954. [2023-11-23 21:23:13,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 528 states have (on average 1.9223484848484849) internal successors, (1015), 752 states have internal predecessors, (1015), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-23 21:23:13,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1329 transitions. [2023-11-23 21:23:13,382 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1329 transitions. Word has length 4 [2023-11-23 21:23:13,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:13,383 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1329 transitions. [2023-11-23 21:23:13,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:23:13,383 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1329 transitions. [2023-11-23 21:23:13,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:23:13,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:13,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:13,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-23 21:23:13,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:13,590 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 203 more)] === [2023-11-23 21:23:13,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:13,591 INFO L85 PathProgramCache]: Analyzing trace with hash 2009415451, now seen corresponding path program 1 times [2023-11-23 21:23:13,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:23:13,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99019156] [2023-11-23 21:23:13,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:13,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:13,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:23:13,594 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:23:13,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 21:23:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:14,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:23:14,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:23:14,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:14,184 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:23:14,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99019156] [2023-11-23 21:23:14,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99019156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:14,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:14,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:23:14,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432301946] [2023-11-23 21:23:14,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:14,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:23:14,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:23:14,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:23:14,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:14,187 INFO L87 Difference]: Start difference. First operand 954 states and 1329 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:23:16,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:23:18,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:18,439 INFO L93 Difference]: Finished difference Result 1155 states and 1410 transitions. [2023-11-23 21:23:18,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:23:18,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-23 21:23:18,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:18,450 INFO L225 Difference]: With dead ends: 1155 [2023-11-23 21:23:18,450 INFO L226 Difference]: Without dead ends: 1155 [2023-11-23 21:23:18,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:18,452 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 613 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:18,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 1033 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 461 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-11-23 21:23:18,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2023-11-23 21:23:18,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 953. [2023-11-23 21:23:18,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 528 states have (on average 1.9128787878787878) internal successors, (1010), 751 states have internal predecessors, (1010), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-23 21:23:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1324 transitions. [2023-11-23 21:23:18,505 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1324 transitions. Word has length 9 [2023-11-23 21:23:18,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:18,506 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1324 transitions. [2023-11-23 21:23:18,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:23:18,506 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1324 transitions. [2023-11-23 21:23:18,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:23:18,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:18,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:18,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-23 21:23:18,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:18,720 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 203 more)] === [2023-11-23 21:23:18,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:18,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2009415452, now seen corresponding path program 1 times [2023-11-23 21:23:18,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:23:18,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894009827] [2023-11-23 21:23:18,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:18,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:18,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:23:18,723 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:23:18,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-23 21:23:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:19,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:23:19,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:23:19,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:19,513 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:23:19,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894009827] [2023-11-23 21:23:19,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894009827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:19,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:19,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:23:19,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689009276] [2023-11-23 21:23:19,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:19,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:19,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:23:19,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:19,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:19,515 INFO L87 Difference]: Start difference. First operand 953 states and 1324 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:23:21,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:23:23,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:23:26,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:26,097 INFO L93 Difference]: Finished difference Result 1018 states and 1337 transitions. [2023-11-23 21:23:26,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:23:26,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-23 21:23:26,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:26,105 INFO L225 Difference]: With dead ends: 1018 [2023-11-23 21:23:26,105 INFO L226 Difference]: Without dead ends: 1018 [2023-11-23 21:23:26,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:26,107 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 248 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:26,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 1251 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 515 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2023-11-23 21:23:26,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2023-11-23 21:23:26,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 956. [2023-11-23 21:23:26,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 531 states have (on average 1.9077212806026365) internal successors, (1013), 754 states have internal predecessors, (1013), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-23 21:23:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1327 transitions. [2023-11-23 21:23:26,165 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1327 transitions. Word has length 9 [2023-11-23 21:23:26,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:26,166 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1327 transitions. [2023-11-23 21:23:26,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:23:26,166 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1327 transitions. [2023-11-23 21:23:26,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:23:26,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:26,167 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:26,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-23 21:23:26,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:26,374 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 203 more)] === [2023-11-23 21:23:26,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:26,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1686109835, now seen corresponding path program 1 times [2023-11-23 21:23:26,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:23:26,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935707383] [2023-11-23 21:23:26,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:26,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:26,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:23:26,376 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:23:26,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07a692-d028-4ea7-a2c6-f4c2e58918ee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-23 21:23:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:26,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:23:26,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:27,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:23:27,209 INFO L327 TraceCheckSpWp]: Computing backward predicates...