./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 345f2c82068eea48aca6314e15d35413af585b08222f0693277bcfbc8625f6ae --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:22:53,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:22:53,719 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:22:53,731 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:22:53,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:22:53,772 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:22:53,775 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:22:53,775 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:22:53,777 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:22:53,782 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:22:53,784 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:22:53,785 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:22:53,785 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:22:53,787 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:22:53,788 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:22:53,788 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:22:53,789 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:22:53,789 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:22:53,790 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:22:53,790 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:22:53,791 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:22:53,791 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:22:53,792 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:22:53,792 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:22:53,793 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:22:53,793 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:22:53,794 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:22:53,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:22:53,795 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:22:53,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:22:53,797 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:22:53,797 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:22:53,798 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:22:53,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:22:53,798 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:22:53,798 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:22:53,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:22:53,799 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:22:53,799 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 345f2c82068eea48aca6314e15d35413af585b08222f0693277bcfbc8625f6ae [2023-11-06 22:22:54,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:22:54,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:22:54,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:22:54,215 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:22:54,215 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:22:54,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i [2023-11-06 22:22:57,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:22:57,895 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:22:57,898 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i [2023-11-06 22:22:57,942 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/data/62cafd466/fcce3f04832d43fd83f6a2a98728e9da/FLAG5bfb60741 [2023-11-06 22:22:57,965 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/data/62cafd466/fcce3f04832d43fd83f6a2a98728e9da [2023-11-06 22:22:57,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:22:57,974 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:22:57,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:22:57,978 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:22:57,983 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:22:57,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:22:57" (1/1) ... [2023-11-06 22:22:57,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22cc411e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:57, skipping insertion in model container [2023-11-06 22:22:57,988 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:22:57" (1/1) ... [2023-11-06 22:22:58,108 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:22:59,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:22:59,809 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-06 22:22:59,810 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@69dc2afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:59, skipping insertion in model container [2023-11-06 22:22:59,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:22:59,811 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 22:22:59,813 INFO L158 Benchmark]: Toolchain (without parser) took 1837.91ms. Allocated memory is still 163.6MB. Free memory was 127.8MB in the beginning and 83.7MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-06 22:22:59,814 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 121.6MB. Free memory is still 93.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:22:59,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1833.26ms. Allocated memory is still 163.6MB. Free memory was 127.0MB in the beginning and 83.7MB in the end (delta: 43.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-11-06 22:22:59,817 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 121.6MB. Free memory is still 93.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1833.26ms. Allocated memory is still 163.6MB. Free memory was 127.0MB in the beginning and 83.7MB in the end (delta: 43.3MB). Peak memory consumption was 41.9MB. 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_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 345f2c82068eea48aca6314e15d35413af585b08222f0693277bcfbc8625f6ae --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:23:02,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:23:02,456 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:23:02,465 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:23:02,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:23:02,512 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:23:02,514 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:23:02,515 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:23:02,516 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:23:02,521 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:23:02,522 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:23:02,523 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:23:02,524 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:23:02,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:23:02,526 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:23:02,527 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:23:02,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:23:02,528 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:23:02,528 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:23:02,530 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:23:02,530 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:23:02,531 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:23:02,531 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:23:02,532 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:23:02,532 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:23:02,533 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:23:02,533 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:23:02,534 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:23:02,535 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:23:02,536 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:23:02,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:23:02,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:23:02,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:23:02,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:23:02,539 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:23:02,539 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:23:02,539 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:23:02,540 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:23:02,540 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:23:02,541 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:23:02,541 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:23:02,542 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 345f2c82068eea48aca6314e15d35413af585b08222f0693277bcfbc8625f6ae [2023-11-06 22:23:02,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:23:03,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:23:03,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:23:03,005 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:23:03,006 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:23:03,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i [2023-11-06 22:23:06,391 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:23:06,908 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:23:06,908 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i [2023-11-06 22:23:06,941 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/data/a389d63ae/52958b9ba04648e795d9ccc753a6a634/FLAG6ceeb0a0b [2023-11-06 22:23:06,957 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/data/a389d63ae/52958b9ba04648e795d9ccc753a6a634 [2023-11-06 22:23:06,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:23:06,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:23:06,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:23:06,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:23:06,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:23:06,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:23:06" (1/1) ... [2023-11-06 22:23:06,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42828a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:06, skipping insertion in model container [2023-11-06 22:23:06,972 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:23:06" (1/1) ... [2023-11-06 22:23:07,110 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:23:08,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:23:08,965 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 22:23:08,995 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:23:09,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:23:09,238 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:23:09,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:23:09,644 WARN L672 CHandler]: The function __VERIFIER_nondet_sector_t is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:23:09,652 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:23:09,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:09 WrapperNode [2023-11-06 22:23:09,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:23:09,654 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:23:09,655 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:23:09,655 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:23:09,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:09" (1/1) ... [2023-11-06 22:23:09,749 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:09" (1/1) ... [2023-11-06 22:23:09,840 INFO L138 Inliner]: procedures = 482, calls = 840, calls flagged for inlining = 55, calls inlined = 37, statements flattened = 985 [2023-11-06 22:23:09,841 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:23:09,841 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:23:09,842 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:23:09,842 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:23:09,863 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:09" (1/1) ... [2023-11-06 22:23:09,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:09" (1/1) ... [2023-11-06 22:23:09,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:09" (1/1) ... [2023-11-06 22:23:09,874 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:09" (1/1) ... [2023-11-06 22:23:09,918 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:09" (1/1) ... [2023-11-06 22:23:09,926 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:09" (1/1) ... [2023-11-06 22:23:09,936 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:09" (1/1) ... [2023-11-06 22:23:09,943 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:09" (1/1) ... [2023-11-06 22:23:09,957 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:23:09,958 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:23:09,958 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:23:09,958 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:23:09,959 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:09" (1/1) ... [2023-11-06 22:23:09,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:23:09,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:23:09,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:23:10,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:23:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2023-11-06 22:23:10,041 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2023-11-06 22:23:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-06 22:23:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-06 22:23:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:23:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2023-11-06 22:23:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-06 22:23:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-06 22:23:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:23:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-11-06 22:23:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:23:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-06 22:23:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-06 22:23:10,045 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-06 22:23:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:23:10,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2023-11-06 22:23:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2023-11-06 22:23:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2023-11-06 22:23:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-06 22:23:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-06 22:23:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:23:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2023-11-06 22:23:10,047 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2023-11-06 22:23:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:23:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:23:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-06 22:23:10,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-06 22:23:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2023-11-06 22:23:10,048 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2023-11-06 22:23:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2023-11-06 22:23:10,049 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2023-11-06 22:23:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:23:10,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:23:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2023-11-06 22:23:10,050 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2023-11-06 22:23:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-11-06 22:23:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:23:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-11-06 22:23:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-06 22:23:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:23:10,051 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:23:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-11-06 22:23:10,051 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-11-06 22:23:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:23:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:23:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-06 22:23:10,052 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-06 22:23:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-06 22:23:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-11-06 22:23:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-11-06 22:23:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-06 22:23:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-11-06 22:23:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:23:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:23:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-06 22:23:10,054 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-06 22:23:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-06 22:23:10,054 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-06 22:23:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-06 22:23:10,054 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-06 22:23:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-11-06 22:23:10,055 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-11-06 22:23:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2023-11-06 22:23:10,056 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2023-11-06 22:23:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2023-11-06 22:23:10,057 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2023-11-06 22:23:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-06 22:23:10,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-06 22:23:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2023-11-06 22:23:10,057 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2023-11-06 22:23:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-06 22:23:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2023-11-06 22:23:10,057 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2023-11-06 22:23:10,058 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-06 22:23:10,058 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-06 22:23:10,058 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2023-11-06 22:23:10,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2023-11-06 22:23:10,459 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:23:10,462 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:23:16,383 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:23:16,402 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:23:16,402 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:23:16,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:23:16 BoogieIcfgContainer [2023-11-06 22:23:16,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:23:16,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:23:16,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:23:16,413 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:23:16,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:23:06" (1/3) ... [2023-11-06 22:23:16,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578d5999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:23:16, skipping insertion in model container [2023-11-06 22:23:16,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:09" (2/3) ... [2023-11-06 22:23:16,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578d5999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:23:16, skipping insertion in model container [2023-11-06 22:23:16,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:23:16" (3/3) ... [2023-11-06 22:23:16,420 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_outl.i [2023-11-06 22:23:16,441 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:23:16,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2023-11-06 22:23:16,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:23:16,542 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=PETRI_NET, 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;@40becf68, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:23:16,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2023-11-06 22:23:16,554 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) [2023-11-06 22:23:16,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 22:23:16,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:23:16,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:23:16,565 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)] === [2023-11-06 22:23:16,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:16,574 INFO L85 PathProgramCache]: Analyzing trace with hash 328182463, now seen corresponding path program 1 times [2023-11-06 22:23:16,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:23:16,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474816793] [2023-11-06 22:23:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:16,593 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 [2023-11-06 22:23:16,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:23:16,601 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:23:16,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 22:23:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:17,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:23:17,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:17,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:17,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:23:17,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:23:17,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474816793] [2023-11-06 22:23:17,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474816793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:17,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:17,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:23:17,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433967563] [2023-11-06 22:23:17,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:17,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:23:17,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:23:17,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:23:17,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:23:17,422 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) [2023-11-06 22:23:19,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:21,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:25,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:23:25,076 INFO L93 Difference]: Finished difference Result 1202 states and 1439 transitions. [2023-11-06 22:23:25,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:23:25,083 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 [2023-11-06 22:23:25,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:23:25,104 INFO L225 Difference]: With dead ends: 1202 [2023-11-06 22:23:25,104 INFO L226 Difference]: Without dead ends: 1198 [2023-11-06 22:23:25,105 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 [2023-11-06 22:23:25,109 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 685 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:23:25,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 2232 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1098 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2023-11-06 22:23:25,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2023-11-06 22:23:25,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 985. [2023-11-06 22:23:25,247 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) [2023-11-06 22:23:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1343 transitions. [2023-11-06 22:23:25,259 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1343 transitions. Word has length 5 [2023-11-06 22:23:25,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:23:25,260 INFO L495 AbstractCegarLoop]: Abstraction has 985 states and 1343 transitions. [2023-11-06 22:23:25,260 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) [2023-11-06 22:23:25,260 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1343 transitions. [2023-11-06 22:23:25,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 22:23:25,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:23:25,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:23:25,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:23:25,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:23:25,464 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)] === [2023-11-06 22:23:25,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:25,465 INFO L85 PathProgramCache]: Analyzing trace with hash 328182464, now seen corresponding path program 1 times [2023-11-06 22:23:25,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:23:25,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617846586] [2023-11-06 22:23:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:25,467 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:23:25,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:23:25,509 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:23:25,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 22:23:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:26,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:23:26,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:26,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:23:26,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:23:26,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617846586] [2023-11-06 22:23:26,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617846586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:26,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:26,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:23:26,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070845906] [2023-11-06 22:23:26,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:26,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:23:26,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:23:26,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:23:26,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:23:26,146 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) [2023-11-06 22:23:28,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:30,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:33,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:23:33,607 INFO L93 Difference]: Finished difference Result 1117 states and 1435 transitions. [2023-11-06 22:23:33,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:23:33,609 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 [2023-11-06 22:23:33,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:23:33,623 INFO L225 Difference]: With dead ends: 1117 [2023-11-06 22:23:33,623 INFO L226 Difference]: Without dead ends: 1117 [2023-11-06 22:23:33,624 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 [2023-11-06 22:23:33,625 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 268 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:23:33,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 2604 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 850 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2023-11-06 22:23:33,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2023-11-06 22:23:33,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1058. [2023-11-06 22:23:33,678 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) [2023-11-06 22:23:33,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1431 transitions. [2023-11-06 22:23:33,694 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1431 transitions. Word has length 5 [2023-11-06 22:23:33,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:23:33,694 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 1431 transitions. [2023-11-06 22:23:33,697 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) [2023-11-06 22:23:33,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1431 transitions. [2023-11-06 22:23:33,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 22:23:33,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:23:33,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:33,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:23:33,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:23:33,914 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)] === [2023-11-06 22:23:33,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:33,915 INFO L85 PathProgramCache]: Analyzing trace with hash 466557375, now seen corresponding path program 1 times [2023-11-06 22:23:33,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:23:33,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824477772] [2023-11-06 22:23:33,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:33,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:23:33,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:23:33,919 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:23:33,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-06 22:23:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:34,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:23:34,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:34,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:34,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:23:34,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:23:34,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824477772] [2023-11-06 22:23:34,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824477772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:34,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:34,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:23:34,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312080604] [2023-11-06 22:23:34,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:34,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:23:34,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:23:34,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:23:34,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:23:34,577 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) [2023-11-06 22:23:36,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:23:36,341 INFO L93 Difference]: Finished difference Result 1264 states and 1518 transitions. [2023-11-06 22:23:36,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:23:36,342 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 [2023-11-06 22:23:36,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:23:36,350 INFO L225 Difference]: With dead ends: 1264 [2023-11-06 22:23:36,351 INFO L226 Difference]: Without dead ends: 1264 [2023-11-06 22:23:36,351 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 [2023-11-06 22:23:36,352 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 658 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:23:36,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1234 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 22:23:36,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2023-11-06 22:23:36,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1057. [2023-11-06 22:23:36,392 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) [2023-11-06 22:23:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1426 transitions. [2023-11-06 22:23:36,400 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1426 transitions. Word has length 11 [2023-11-06 22:23:36,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:23:36,400 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1426 transitions. [2023-11-06 22:23:36,401 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) [2023-11-06 22:23:36,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1426 transitions. [2023-11-06 22:23:36,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 22:23:36,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:23:36,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:36,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:23:36,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:23:36,617 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)] === [2023-11-06 22:23:36,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:36,618 INFO L85 PathProgramCache]: Analyzing trace with hash 466557376, now seen corresponding path program 1 times [2023-11-06 22:23:36,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:23:36,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755548611] [2023-11-06 22:23:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:36,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:23:36,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:23:36,620 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:23:36,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:23:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:37,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:23:37,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:37,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:23:37,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:23:37,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755548611] [2023-11-06 22:23:37,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755548611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:37,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:37,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:23:37,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057680478] [2023-11-06 22:23:37,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:37,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:23:37,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:23:37,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:23:37,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:23:37,361 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) [2023-11-06 22:23:39,394 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 [] [2023-11-06 22:23:41,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:23:41,570 INFO L93 Difference]: Finished difference Result 1123 states and 1441 transitions. [2023-11-06 22:23:41,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:23:41,571 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 [2023-11-06 22:23:41,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:23:41,578 INFO L225 Difference]: With dead ends: 1123 [2023-11-06 22:23:41,578 INFO L226 Difference]: Without dead ends: 1123 [2023-11-06 22:23:41,578 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 [2023-11-06 22:23:41,579 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 268 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:23:41,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 1503 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 411 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-11-06 22:23:41,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2023-11-06 22:23:41,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1060. [2023-11-06 22:23:41,629 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) [2023-11-06 22:23:41,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1429 transitions. [2023-11-06 22:23:41,635 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1429 transitions. Word has length 11 [2023-11-06 22:23:41,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:23:41,636 INFO L495 AbstractCegarLoop]: Abstraction has 1060 states and 1429 transitions. [2023-11-06 22:23:41,637 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) [2023-11-06 22:23:41,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1429 transitions. [2023-11-06 22:23:41,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 22:23:41,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:23:41,638 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:41,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:23:41,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:23:41,853 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)] === [2023-11-06 22:23:41,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:41,853 INFO L85 PathProgramCache]: Analyzing trace with hash 696886511, now seen corresponding path program 1 times [2023-11-06 22:23:41,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:23:41,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409905043] [2023-11-06 22:23:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:41,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:23:41,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:23:41,856 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:23:41,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:23:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:42,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:23:42,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:42,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:23:43,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:43,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:23:43,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409905043] [2023-11-06 22:23:43,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409905043] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:23:43,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:23:43,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2023-11-06 22:23:43,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748912237] [2023-11-06 22:23:43,010 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:23:43,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:23:43,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:23:43,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:23:43,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:23:43,011 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) [2023-11-06 22:23:45,042 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 [] [2023-11-06 22:23:47,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:49,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:51,057 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 [] [2023-11-06 22:23:59,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:23:59,419 INFO L93 Difference]: Finished difference Result 1333 states and 1675 transitions. [2023-11-06 22:23:59,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:23:59,420 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 14 [2023-11-06 22:23:59,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:23:59,432 INFO L225 Difference]: With dead ends: 1333 [2023-11-06 22:23:59,432 INFO L226 Difference]: Without dead ends: 1333 [2023-11-06 22:23:59,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:23:59,436 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 566 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 9 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 3886 SdHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:23:59,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 3886 Invalid, 1762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1749 Invalid, 4 Unknown, 0 Unchecked, 16.2s Time] [2023-11-06 22:23:59,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2023-11-06 22:23:59,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1207. [2023-11-06 22:23:59,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 740 states have (on average 1.7391891891891893) internal successors, (1287), 964 states have internal predecessors, (1287), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:23:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1655 transitions. [2023-11-06 22:23:59,487 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1655 transitions. Word has length 14 [2023-11-06 22:23:59,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:23:59,508 INFO L495 AbstractCegarLoop]: Abstraction has 1207 states and 1655 transitions. [2023-11-06 22:23:59,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-06 22:23:59,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1655 transitions. [2023-11-06 22:23:59,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-06 22:23:59,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:23:59,510 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:59,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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)] Forceful destruction successful, exit code 0 [2023-11-06 22:23:59,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:23:59,725 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:23:59,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:59,726 INFO L85 PathProgramCache]: Analyzing trace with hash -435447830, now seen corresponding path program 1 times [2023-11-06 22:23:59,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:23:59,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601559073] [2023-11-06 22:23:59,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:59,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:23:59,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:23:59,728 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:23:59,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (7)] Waiting until timeout for monitored process [2023-11-06 22:24:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:00,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:24:00,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:00,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:00,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:00,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601559073] [2023-11-06 22:24:00,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601559073] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:24:00,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:24:00,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 22:24:00,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130522880] [2023-11-06 22:24:00,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:24:00,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:24:00,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:00,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:24:00,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:24:00,453 INFO L87 Difference]: Start difference. First operand 1207 states and 1655 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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) [2023-11-06 22:24:00,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:00,750 INFO L93 Difference]: Finished difference Result 1213 states and 1659 transitions. [2023-11-06 22:24:00,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:24:00,751 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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 19 [2023-11-06 22:24:00,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:00,760 INFO L225 Difference]: With dead ends: 1213 [2023-11-06 22:24:00,760 INFO L226 Difference]: Without dead ends: 1213 [2023-11-06 22:24:00,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:24:00,763 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 22 mSDsluCounter, 3884 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 4667 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:00,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 4667 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:24:00,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2023-11-06 22:24:00,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1212. [2023-11-06 22:24:00,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 745 states have (on average 1.7328859060402684) internal successors, (1291), 969 states have internal predecessors, (1291), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:24:00,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1659 transitions. [2023-11-06 22:24:00,808 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1659 transitions. Word has length 19 [2023-11-06 22:24:00,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:00,809 INFO L495 AbstractCegarLoop]: Abstraction has 1212 states and 1659 transitions. [2023-11-06 22:24:00,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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) [2023-11-06 22:24:00,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1659 transitions. [2023-11-06 22:24:00,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-06 22:24:00,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:00,818 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:00,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (7)] Ended with exit code 0 [2023-11-06 22:24:01,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:01,032 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:24:01,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:01,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1491950848, now seen corresponding path program 2 times [2023-11-06 22:24:01,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:01,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047691970] [2023-11-06 22:24:01,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:24:01,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:01,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:01,035 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:24:01,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (8)] Waiting until timeout for monitored process [2023-11-06 22:24:01,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:24:01,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:01,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:24:01,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:02,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:03,246 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:03,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:03,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047691970] [2023-11-06 22:24:03,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047691970] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:24:03,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:24:03,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2023-11-06 22:24:03,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31565803] [2023-11-06 22:24:03,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:24:03,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:24:03,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:03,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:24:03,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:24:03,249 INFO L87 Difference]: Start difference. First operand 1212 states and 1659 transitions. Second operand has 15 states, 14 states have (on average 3.0) internal successors, (42), 15 states have internal predecessors, (42), 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) [2023-11-06 22:24:05,279 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 [] [2023-11-06 22:24:07,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:09,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:11,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:13,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:15,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:17,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:19,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:21,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:23,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:25,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:38,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:38,504 INFO L93 Difference]: Finished difference Result 1290 states and 1689 transitions. [2023-11-06 22:24:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:24:38,505 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 15 states have internal predecessors, (42), 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) Word has length 23 [2023-11-06 22:24:38,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:38,512 INFO L225 Difference]: With dead ends: 1290 [2023-11-06 22:24:38,512 INFO L226 Difference]: Without dead ends: 1290 [2023-11-06 22:24:38,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=229, Invalid=371, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:24:38,513 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 293 mSDsluCounter, 4674 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 24 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 5501 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:38,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 5501 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2347 Invalid, 11 Unknown, 0 Unchecked, 33.7s Time] [2023-11-06 22:24:38,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2023-11-06 22:24:38,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1225. [2023-11-06 22:24:38,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 758 states have (on average 1.7242744063324538) internal successors, (1307), 982 states have internal predecessors, (1307), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:24:38,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1675 transitions. [2023-11-06 22:24:38,556 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1675 transitions. Word has length 23 [2023-11-06 22:24:38,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:38,557 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 1675 transitions. [2023-11-06 22:24:38,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 15 states have internal predecessors, (42), 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) [2023-11-06 22:24:38,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1675 transitions. [2023-11-06 22:24:38,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:24:38,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:38,559 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:38,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:38,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:38,774 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:24:38,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:38,775 INFO L85 PathProgramCache]: Analyzing trace with hash 525507370, now seen corresponding path program 2 times [2023-11-06 22:24:38,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:38,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002175805] [2023-11-06 22:24:38,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:24:38,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:38,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:38,778 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:24:38,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (9)] Waiting until timeout for monitored process [2023-11-06 22:24:39,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:24:39,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:39,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:24:39,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-06 22:24:39,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:39,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:39,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002175805] [2023-11-06 22:24:39,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002175805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:39,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:39,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:24:39,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734390175] [2023-11-06 22:24:39,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:39,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:24:39,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:39,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:24:39,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:24:39,562 INFO L87 Difference]: Start difference. First operand 1225 states and 1675 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-11-06 22:24:41,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:41,260 INFO L93 Difference]: Finished difference Result 1433 states and 1768 transitions. [2023-11-06 22:24:41,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:24:41,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 31 [2023-11-06 22:24:41,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:41,268 INFO L225 Difference]: With dead ends: 1433 [2023-11-06 22:24:41,268 INFO L226 Difference]: Without dead ends: 1433 [2023-11-06 22:24:41,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:24:41,270 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 644 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:41,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 1232 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 22:24:41,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2023-11-06 22:24:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1223. [2023-11-06 22:24:41,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 758 states have (on average 1.712401055408971) internal successors, (1298), 980 states have internal predecessors, (1298), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:24:41,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1666 transitions. [2023-11-06 22:24:41,311 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1666 transitions. Word has length 31 [2023-11-06 22:24:41,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:41,312 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1666 transitions. [2023-11-06 22:24:41,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-11-06 22:24:41,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1666 transitions. [2023-11-06 22:24:41,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:24:41,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:41,313 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:41,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:41,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:41,529 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:24:41,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:41,529 INFO L85 PathProgramCache]: Analyzing trace with hash 525507371, now seen corresponding path program 1 times [2023-11-06 22:24:41,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:41,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541224877] [2023-11-06 22:24:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:41,530 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:41,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:41,534 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:24:41,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (10)] Waiting until timeout for monitored process [2023-11-06 22:24:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:42,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:24:42,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:42,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:42,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:42,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541224877] [2023-11-06 22:24:42,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541224877] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:24:42,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:24:42,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-06 22:24:42,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753318272] [2023-11-06 22:24:42,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:24:42,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:24:42,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:42,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:24:42,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:24:42,437 INFO L87 Difference]: Start difference. First operand 1223 states and 1666 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 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) [2023-11-06 22:24:42,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:42,961 INFO L93 Difference]: Finished difference Result 1223 states and 1662 transitions. [2023-11-06 22:24:42,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:24:42,962 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 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 31 [2023-11-06 22:24:42,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:42,969 INFO L225 Difference]: With dead ends: 1223 [2023-11-06 22:24:42,969 INFO L226 Difference]: Without dead ends: 1223 [2023-11-06 22:24:42,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:24:42,970 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 53 mSDsluCounter, 5432 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 6213 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:42,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 6213 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:24:42,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2023-11-06 22:24:43,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2023-11-06 22:24:43,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 758 states have (on average 1.7071240105540897) internal successors, (1294), 980 states have internal predecessors, (1294), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:24:43,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1662 transitions. [2023-11-06 22:24:43,010 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1662 transitions. Word has length 31 [2023-11-06 22:24:43,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:43,010 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1662 transitions. [2023-11-06 22:24:43,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 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) [2023-11-06 22:24:43,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1662 transitions. [2023-11-06 22:24:43,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-06 22:24:43,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:43,012 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:43,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:43,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:43,228 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:24:43,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:43,228 INFO L85 PathProgramCache]: Analyzing trace with hash 642735584, now seen corresponding path program 3 times [2023-11-06 22:24:43,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:43,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981975671] [2023-11-06 22:24:43,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:24:43,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:43,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:43,231 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:24:43,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (11)] Waiting until timeout for monitored process [2023-11-06 22:24:44,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-06 22:24:44,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:44,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:24:44,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:45,484 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:45,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:48,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:48,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981975671] [2023-11-06 22:24:48,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981975671] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:24:48,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:24:48,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2023-11-06 22:24:48,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391248470] [2023-11-06 22:24:48,044 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:24:48,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 22:24:48,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:48,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 22:24:48,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:24:48,046 INFO L87 Difference]: Start difference. First operand 1223 states and 1662 transitions. Second operand has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 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) [2023-11-06 22:24:50,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:52,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:54,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:56,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:58,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:00,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:02,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:04,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:06,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:08,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:10,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:12,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:14,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:16,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:18,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:20,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:22,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:24,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:26,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:28,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:30,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:32,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:34,186 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 [] [2023-11-06 22:25:55,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:55,466 INFO L93 Difference]: Finished difference Result 1279 states and 1673 transitions. [2023-11-06 22:25:55,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:25:55,467 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 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) Word has length 41 [2023-11-06 22:25:55,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:55,474 INFO L225 Difference]: With dead ends: 1279 [2023-11-06 22:25:55,474 INFO L226 Difference]: Without dead ends: 1279 [2023-11-06 22:25:55,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:25:55,475 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 249 mSDsluCounter, 8237 mSDsCounter, 0 mSdLazyCounter, 4429 mSolverCounterSat, 8 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 9060 SdHoareTripleChecker+Invalid, 4460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 4429 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:55,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 9060 Invalid, 4460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 4429 Invalid, 23 Unknown, 0 Unchecked, 67.2s Time] [2023-11-06 22:25:55,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2023-11-06 22:25:55,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1221. [2023-11-06 22:25:55,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 757 states have (on average 1.7054161162483488) internal successors, (1291), 978 states have internal predecessors, (1291), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:25:55,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1659 transitions. [2023-11-06 22:25:55,513 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1659 transitions. Word has length 41 [2023-11-06 22:25:55,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:55,513 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1659 transitions. [2023-11-06 22:25:55,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 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) [2023-11-06 22:25:55,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1659 transitions. [2023-11-06 22:25:55,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 22:25:55,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:55,515 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:55,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:55,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:25:55,732 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:25:55,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:55,733 INFO L85 PathProgramCache]: Analyzing trace with hash -806437269, now seen corresponding path program 2 times [2023-11-06 22:25:55,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:25:55,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993583166] [2023-11-06 22:25:55,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:25:55,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:25:55,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:25:55,735 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:25:55,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (12)] Waiting until timeout for monitored process [2023-11-06 22:25:56,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:25:56,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:56,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:25:56,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:56,682 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 22:25:56,682 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:25:56,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:25:56,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993583166] [2023-11-06 22:25:56,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993583166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:56,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:56,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:25:56,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087254929] [2023-11-06 22:25:56,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:56,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:25:56,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:25:56,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:25:56,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:25:56,684 INFO L87 Difference]: Start difference. First operand 1221 states and 1659 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-06 22:25:58,708 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 [] [2023-11-06 22:26:01,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:01,055 INFO L93 Difference]: Finished difference Result 1277 states and 1671 transitions. [2023-11-06 22:26:01,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:26:01,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 43 [2023-11-06 22:26:01,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:01,061 INFO L225 Difference]: With dead ends: 1277 [2023-11-06 22:26:01,061 INFO L226 Difference]: Without dead ends: 1277 [2023-11-06 22:26:01,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:26:01,063 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 234 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:01,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1964 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 572 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2023-11-06 22:26:01,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-11-06 22:26:01,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1219. [2023-11-06 22:26:01,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 757 states have (on average 1.702774108322325) internal successors, (1289), 976 states have internal predecessors, (1289), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:26:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1657 transitions. [2023-11-06 22:26:01,132 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1657 transitions. Word has length 43 [2023-11-06 22:26:01,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:01,133 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 1657 transitions. [2023-11-06 22:26:01,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-06 22:26:01,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1657 transitions. [2023-11-06 22:26:01,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 22:26:01,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:01,136 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:01,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:01,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:26:01,352 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:26:01,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:01,353 INFO L85 PathProgramCache]: Analyzing trace with hash -856983900, now seen corresponding path program 1 times [2023-11-06 22:26:01,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:26:01,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620469354] [2023-11-06 22:26:01,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:01,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:26:01,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:26:01,355 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:26:01,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (13)] Waiting until timeout for monitored process [2023-11-06 22:26:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:02,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:26:02,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:02,060 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 22:26:02,069 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-06 22:26:02,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:26:02,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:26:02,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620469354] [2023-11-06 22:26:02,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620469354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:02,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:02,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:02,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256939994] [2023-11-06 22:26:02,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:02,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:02,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:26:02,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:02,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:02,072 INFO L87 Difference]: Start difference. First operand 1219 states and 1657 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:26:04,104 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 [] [2023-11-06 22:26:04,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:04,952 INFO L93 Difference]: Finished difference Result 1218 states and 1656 transitions. [2023-11-06 22:26:04,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:26:04,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 67 [2023-11-06 22:26:04,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:04,960 INFO L225 Difference]: With dead ends: 1218 [2023-11-06 22:26:04,960 INFO L226 Difference]: Without dead ends: 1218 [2023-11-06 22:26:04,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:04,961 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 2 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:04,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1358 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 213 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2023-11-06 22:26:04,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2023-11-06 22:26:04,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1218. [2023-11-06 22:26:04,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 757 states have (on average 1.701453104359313) internal successors, (1288), 975 states have internal predecessors, (1288), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:26:04,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1656 transitions. [2023-11-06 22:26:04,995 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1656 transitions. Word has length 67 [2023-11-06 22:26:04,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:04,995 INFO L495 AbstractCegarLoop]: Abstraction has 1218 states and 1656 transitions. [2023-11-06 22:26:04,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:26:04,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1656 transitions. [2023-11-06 22:26:04,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 22:26:04,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:04,997 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:05,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:05,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:26:05,214 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:26:05,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:05,214 INFO L85 PathProgramCache]: Analyzing trace with hash -856983899, now seen corresponding path program 1 times [2023-11-06 22:26:05,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:26:05,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013058827] [2023-11-06 22:26:05,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:05,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:26:05,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:26:05,216 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:26:05,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (14)] Waiting until timeout for monitored process [2023-11-06 22:26:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:05,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:26:05,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:06,063 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:26:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-06 22:26:06,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:26:06,100 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:26:06,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013058827] [2023-11-06 22:26:06,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013058827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:06,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:06,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:06,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775449847] [2023-11-06 22:26:06,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:06,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:26:06,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:26:06,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:26:06,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:26:06,102 INFO L87 Difference]: Start difference. First operand 1218 states and 1656 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:26:08,129 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 [] [2023-11-06 22:26:09,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:09,358 INFO L93 Difference]: Finished difference Result 1217 states and 1654 transitions. [2023-11-06 22:26:09,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:26:09,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 67 [2023-11-06 22:26:09,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:09,365 INFO L225 Difference]: With dead ends: 1217 [2023-11-06 22:26:09,366 INFO L226 Difference]: Without dead ends: 1217 [2023-11-06 22:26:09,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:26:09,366 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 748 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:09,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1357 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 211 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2023-11-06 22:26:09,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-11-06 22:26:09,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2023-11-06 22:26:09,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 757 states have (on average 1.6988110964332892) internal successors, (1286), 974 states have internal predecessors, (1286), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:26:09,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1654 transitions. [2023-11-06 22:26:09,411 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1654 transitions. Word has length 67 [2023-11-06 22:26:09,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:09,411 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1654 transitions. [2023-11-06 22:26:09,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:26:09,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1654 transitions. [2023-11-06 22:26:09,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-06 22:26:09,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:09,413 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:09,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:09,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:26:09,637 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr164ASSERT_VIOLATIONMEMORY_LEAK === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:26:09,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:09,638 INFO L85 PathProgramCache]: Analyzing trace with hash -641761608, now seen corresponding path program 1 times [2023-11-06 22:26:09,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:26:09,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722626510] [2023-11-06 22:26:09,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:09,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:26:09,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:26:09,641 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:26:09,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (15)] Waiting until timeout for monitored process [2023-11-06 22:26:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:10,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:26:10,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-06 22:26:10,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:26:10,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:26:10,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722626510] [2023-11-06 22:26:10,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722626510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:10,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:10,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:10,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258278701] [2023-11-06 22:26:10,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:10,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:10,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:26:10,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:10,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:10,432 INFO L87 Difference]: Start difference. First operand 1217 states and 1654 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:26:12,456 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 [] [2023-11-06 22:26:13,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:13,474 INFO L93 Difference]: Finished difference Result 1258 states and 1663 transitions. [2023-11-06 22:26:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:26:13,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 74 [2023-11-06 22:26:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:13,482 INFO L225 Difference]: With dead ends: 1258 [2023-11-06 22:26:13,482 INFO L226 Difference]: Without dead ends: 1246 [2023-11-06 22:26:13,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:13,483 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 93 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:13,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1315 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2023-11-06 22:26:13,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2023-11-06 22:26:13,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1213. [2023-11-06 22:26:13,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 755 states have (on average 1.6993377483443708) internal successors, (1283), 972 states have internal predecessors, (1283), 183 states have call successors, (183), 79 states have call predecessors, (183), 78 states have return successors, (181), 174 states have call predecessors, (181), 181 states have call successors, (181) [2023-11-06 22:26:13,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1647 transitions. [2023-11-06 22:26:13,538 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1647 transitions. Word has length 74 [2023-11-06 22:26:13,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:13,539 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 1647 transitions. [2023-11-06 22:26:13,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:26:13,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1647 transitions. [2023-11-06 22:26:13,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 22:26:13,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:13,544 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:13,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:13,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:26:13,761 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:26:13,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:13,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1271061945, now seen corresponding path program 1 times [2023-11-06 22:26:13,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:26:13,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750956740] [2023-11-06 22:26:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:13,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:26:13,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:26:13,764 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:26:13,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (16)] Waiting until timeout for monitored process [2023-11-06 22:26:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:15,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:26:15,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:15,514 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 22:26:15,515 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:26:15,611 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-06 22:26:15,669 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-06 22:26:15,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:15,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:26:15,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750956740] [2023-11-06 22:26:15,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750956740] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:26:15,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [353592286] [2023-11-06 22:26:15,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:15,806 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:26:15,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:26:15,812 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:26:15,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-11-06 22:26:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:17,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:26:17,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:18,860 INFO L322 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2023-11-06 22:26:18,860 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2023-11-06 22:26:19,026 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2023-11-06 22:26:19,136 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-06 22:26:19,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:19,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [353592286] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:26:19,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:19,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:26:19,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105311224] [2023-11-06 22:26:19,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:19,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:26:19,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:26:19,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:26:19,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:26:19,228 INFO L87 Difference]: Start difference. First operand 1213 states and 1647 transitions. Second operand has 10 states, 9 states have (on average 8.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-06 22:26:21,261 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 [] [2023-11-06 22:26:23,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:25,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:27,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:29,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:31,290 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 [] [2023-11-06 22:26:35,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:35,996 INFO L93 Difference]: Finished difference Result 1745 states and 2283 transitions. [2023-11-06 22:26:35,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:26:35,997 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 76 [2023-11-06 22:26:35,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:36,005 INFO L225 Difference]: With dead ends: 1745 [2023-11-06 22:26:36,005 INFO L226 Difference]: Without dead ends: 1745 [2023-11-06 22:26:36,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:26:36,006 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 752 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 2113 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 3506 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2113 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:36,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 3506 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2113 Invalid, 6 Unknown, 0 Unchecked, 16.6s Time] [2023-11-06 22:26:36,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2023-11-06 22:26:36,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1522. [2023-11-06 22:26:36,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 984 states have (on average 1.728658536585366) internal successors, (1701), 1213 states have internal predecessors, (1701), 241 states have call successors, (241), 101 states have call predecessors, (241), 100 states have return successors, (239), 225 states have call predecessors, (239), 239 states have call successors, (239) [2023-11-06 22:26:36,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2181 transitions. [2023-11-06 22:26:36,048 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2181 transitions. Word has length 76 [2023-11-06 22:26:36,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:36,048 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 2181 transitions. [2023-11-06 22:26:36,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-06 22:26:36,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2181 transitions. [2023-11-06 22:26:36,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 22:26:36,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:36,050 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:36,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:36,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:36,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:26:36,460 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:26:36,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:36,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1271061944, now seen corresponding path program 1 times [2023-11-06 22:26:36,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:26:36,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263131745] [2023-11-06 22:26:36,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:36,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:26:36,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:26:36,462 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:26:36,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (18)] Waiting until timeout for monitored process [2023-11-06 22:26:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:37,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:26:37,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:38,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:26:38,540 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:26:38,705 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-06 22:26:38,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:39,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:26:39,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263131745] [2023-11-06 22:26:39,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263131745] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:26:39,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1775346139] [2023-11-06 22:26:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:39,252 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:26:39,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:26:39,257 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:26:39,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-11-06 22:26:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:41,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:26:41,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:42,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:26:42,568 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:26:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-06 22:26:42,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:43,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1775346139] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:26:43,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:43,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-11-06 22:26:43,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769229014] [2023-11-06 22:26:43,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:43,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:26:43,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:26:43,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:26:43,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:26:43,026 INFO L87 Difference]: Start difference. First operand 1522 states and 2181 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:26:45,053 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 [] [2023-11-06 22:26:47,059 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 [] [2023-11-06 22:26:52,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:52,761 INFO L93 Difference]: Finished difference Result 1945 states and 2506 transitions. [2023-11-06 22:26:52,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:26:52,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 76 [2023-11-06 22:26:52,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:52,772 INFO L225 Difference]: With dead ends: 1945 [2023-11-06 22:26:52,772 INFO L226 Difference]: Without dead ends: 1945 [2023-11-06 22:26:52,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:26:52,774 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 968 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:52,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 2063 Invalid, 1896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1887 Invalid, 2 Unknown, 0 Unchecked, 9.6s Time] [2023-11-06 22:26:52,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2023-11-06 22:26:52,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1699. [2023-11-06 22:26:52,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1119 states have (on average 1.737265415549598) internal successors, (1944), 1344 states have internal predecessors, (1944), 268 states have call successors, (268), 116 states have call predecessors, (268), 115 states have return successors, (266), 257 states have call predecessors, (266), 266 states have call successors, (266) [2023-11-06 22:26:52,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2478 transitions. [2023-11-06 22:26:52,864 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2478 transitions. Word has length 76 [2023-11-06 22:26:52,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:52,864 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2478 transitions. [2023-11-06 22:26:52,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:26:52,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2478 transitions. [2023-11-06 22:26:52,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-06 22:26:52,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:52,870 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:52,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:53,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:53,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt [2023-11-06 22:26:53,291 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr114REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:26:53,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:53,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1980893507, now seen corresponding path program 1 times [2023-11-06 22:26:53,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:26:53,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733202064] [2023-11-06 22:26:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:53,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:26:53,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:26:53,294 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:26:53,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (20)] Waiting until timeout for monitored process [2023-11-06 22:26:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:54,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:26:54,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-06 22:26:54,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:26:54,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:26:54,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733202064] [2023-11-06 22:26:54,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733202064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:54,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:54,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:26:54,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862327012] [2023-11-06 22:26:54,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:54,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:26:54,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:26:54,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:26:54,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:26:54,154 INFO L87 Difference]: Start difference. First operand 1699 states and 2478 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-06 22:26:54,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:54,224 INFO L93 Difference]: Finished difference Result 1338 states and 1886 transitions. [2023-11-06 22:26:54,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:26:54,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 81 [2023-11-06 22:26:54,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:54,230 INFO L225 Difference]: With dead ends: 1338 [2023-11-06 22:26:54,230 INFO L226 Difference]: Without dead ends: 1333 [2023-11-06 22:26:54,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:26:54,231 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 3 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:54,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3131 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:26:54,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2023-11-06 22:26:54,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1333. [2023-11-06 22:26:54,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 859 states have (on average 1.7415599534342259) internal successors, (1496), 1071 states have internal predecessors, (1496), 192 states have call successors, (192), 85 states have call predecessors, (192), 85 states have return successors, (192), 189 states have call predecessors, (192), 192 states have call successors, (192) [2023-11-06 22:26:54,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1880 transitions. [2023-11-06 22:26:54,264 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1880 transitions. Word has length 81 [2023-11-06 22:26:54,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:54,265 INFO L495 AbstractCegarLoop]: Abstraction has 1333 states and 1880 transitions. [2023-11-06 22:26:54,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-06 22:26:54,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1880 transitions. [2023-11-06 22:26:54,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-06 22:26:54,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:54,266 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:54,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:54,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:26:54,487 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:26:54,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:54,487 INFO L85 PathProgramCache]: Analyzing trace with hash -425223700, now seen corresponding path program 1 times [2023-11-06 22:26:54,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:26:54,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623529110] [2023-11-06 22:26:54,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:54,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:26:54,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:26:54,489 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:26:54,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/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 (21)] Waiting until timeout for monitored process [2023-11-06 22:26:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:55,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:26:55,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:56,262 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 22:26:56,263 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:26:56,347 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-06 22:26:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-06 22:26:56,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:56,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:26:56,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623529110] [2023-11-06 22:26:56,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623529110] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:26:56,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [361537959] [2023-11-06 22:26:56,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:56,558 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:26:56,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:26:56,559 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:26:56,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a6e305e-c30e-453e-a824-21c105c968ad/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process