./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9ba053a0d2bb5cff65ef20f502acdb8ce89a9e82653cf0711701cf2b8f86a02 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:39:46,278 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:39:46,373 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:39:46,380 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:39:46,381 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:39:46,424 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:39:46,425 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:39:46,425 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:39:46,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:39:46,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:39:46,432 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:39:46,433 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:39:46,433 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:39:46,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:39:46,436 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:39:46,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:39:46,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:39:46,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:39:46,438 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:39:46,438 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:39:46,439 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:39:46,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:39:46,440 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:39:46,441 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:39:46,441 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:39:46,442 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:39:46,442 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:39:46,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:39:46,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:39:46,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:46,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:39:46,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:39:46,446 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:39:46,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:39:46,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:39:46,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:39:46,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:39:46,448 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:39:46,448 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_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9ba053a0d2bb5cff65ef20f502acdb8ce89a9e82653cf0711701cf2b8f86a02 [2023-11-19 07:39:46,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:39:46,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:39:46,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:39:46,792 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:39:46,792 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:39:46,794 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i [2023-11-19 07:39:50,046 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:50,577 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:50,578 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i [2023-11-19 07:39:50,608 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/data/9549f5fbd/18d1f413a5ec4ea99ce6a58f215c98f3/FLAGde5e3b9ad [2023-11-19 07:39:50,623 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/data/9549f5fbd/18d1f413a5ec4ea99ce6a58f215c98f3 [2023-11-19 07:39:50,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:50,628 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:50,629 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:50,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:50,635 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:50,636 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:50" (1/1) ... [2023-11-19 07:39:50,638 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cddf9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:50, skipping insertion in model container [2023-11-19 07:39:50,638 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:50" (1/1) ... [2023-11-19 07:39:50,755 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:52,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:52,417 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-19 07:39:52,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@ab581b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:52, skipping insertion in model container [2023-11-19 07:39:52,418 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:52,418 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:39:52,421 INFO L158 Benchmark]: Toolchain (without parser) took 1791.77ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 98.2MB in the beginning and 119.4MB in the end (delta: -21.1MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2023-11-19 07:39:52,421 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 109.1MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:39:52,423 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1789.05ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 97.9MB in the beginning and 119.4MB in the end (delta: -21.5MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. [2023-11-19 07:39:52,426 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 109.1MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1789.05ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 97.9MB in the beginning and 119.4MB in the end (delta: -21.5MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2975]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9ba053a0d2bb5cff65ef20f502acdb8ce89a9e82653cf0711701cf2b8f86a02 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:39:55,003 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:39:55,130 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:39:55,139 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:39:55,140 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:39:55,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:39:55,195 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:39:55,196 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:39:55,197 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:39:55,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:39:55,203 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:39:55,204 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:39:55,204 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:39:55,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:39:55,207 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:39:55,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:39:55,208 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:39:55,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:39:55,209 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:39:55,209 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:39:55,210 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:39:55,210 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:39:55,211 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:39:55,211 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:39:55,211 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:39:55,212 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:39:55,212 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:39:55,213 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:39:55,214 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:39:55,214 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:39:55,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:39:55,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:55,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:39:55,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:39:55,217 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:39:55,217 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:39:55,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:39:55,218 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:39:55,218 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:39:55,219 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:39:55,220 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:39:55,220 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_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9ba053a0d2bb5cff65ef20f502acdb8ce89a9e82653cf0711701cf2b8f86a02 [2023-11-19 07:39:55,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:39:55,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:39:55,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:39:55,667 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:39:55,668 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:39:55,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i [2023-11-19 07:39:59,016 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:59,550 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:59,550 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i [2023-11-19 07:39:59,579 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/data/aec25d2e0/3dec2767a730475187c8210d06f43c44/FLAG3a3a841e1 [2023-11-19 07:39:59,595 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/data/aec25d2e0/3dec2767a730475187c8210d06f43c44 [2023-11-19 07:39:59,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:59,600 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:59,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:59,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:59,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:59,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:59" (1/1) ... [2023-11-19 07:39:59,609 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b2a0139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:59, skipping insertion in model container [2023-11-19 07:39:59,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:59" (1/1) ... [2023-11-19 07:39:59,748 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:01,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:01,139 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:40:01,170 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:01,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:01,439 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:40:01,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:01,917 WARN L675 CHandler]: The function __VERIFIER_nondet_sector_t is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:40:01,925 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:40:01,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:01 WrapperNode [2023-11-19 07:40:01,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:01,931 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:01,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:40:01,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:40:01,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:01" (1/1) ... [2023-11-19 07:40:02,046 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:01" (1/1) ... [2023-11-19 07:40:02,242 INFO L138 Inliner]: procedures = 482, calls = 840, calls flagged for inlining = 55, calls inlined = 39, statements flattened = 997 [2023-11-19 07:40:02,242 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:02,243 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:40:02,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:40:02,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:40:02,264 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:01" (1/1) ... [2023-11-19 07:40:02,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:01" (1/1) ... [2023-11-19 07:40:02,295 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:01" (1/1) ... [2023-11-19 07:40:02,295 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:01" (1/1) ... [2023-11-19 07:40:02,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:01" (1/1) ... [2023-11-19 07:40:02,379 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:01" (1/1) ... [2023-11-19 07:40:02,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:01" (1/1) ... [2023-11-19 07:40:02,399 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:01" (1/1) ... [2023-11-19 07:40:02,415 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:40:02,416 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:40:02,416 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:40:02,417 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:40:02,417 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:01" (1/1) ... [2023-11-19 07:40:02,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:02,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:02,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:02,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:40:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2023-11-19 07:40:02,505 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2023-11-19 07:40:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-19 07:40:02,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-19 07:40:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:40:02,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2023-11-19 07:40:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 07:40:02,506 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 07:40:02,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:40:02,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-11-19 07:40:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:40:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-19 07:40:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-19 07:40:02,513 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-19 07:40:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:40:02,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2023-11-19 07:40:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2023-11-19 07:40:02,514 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2023-11-19 07:40:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-19 07:40:02,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-19 07:40:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:40:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2023-11-19 07:40:02,516 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2023-11-19 07:40:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:40:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:40:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 07:40:02,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 07:40:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2023-11-19 07:40:02,517 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2023-11-19 07:40:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2023-11-19 07:40:02,518 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2023-11-19 07:40:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:40:02,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:40:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2023-11-19 07:40:02,519 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2023-11-19 07:40:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-11-19 07:40:02,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:40:02,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-11-19 07:40:02,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 07:40:02,521 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:40:02,521 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:40:02,521 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-11-19 07:40:02,521 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-11-19 07:40:02,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:40:02,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:40:02,522 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-19 07:40:02,522 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-19 07:40:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-19 07:40:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-11-19 07:40:02,523 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-11-19 07:40:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-19 07:40:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-11-19 07:40:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:40:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:40:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 07:40:02,525 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 07:40:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-19 07:40:02,525 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-19 07:40:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-19 07:40:02,526 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-19 07:40:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-11-19 07:40:02,527 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-11-19 07:40:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2023-11-19 07:40:02,528 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2023-11-19 07:40:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2023-11-19 07:40:02,529 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2023-11-19 07:40:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-19 07:40:02,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-19 07:40:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2023-11-19 07:40:02,530 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2023-11-19 07:40:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-19 07:40:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2023-11-19 07:40:02,531 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2023-11-19 07:40:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-19 07:40:02,531 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-19 07:40:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2023-11-19 07:40:02,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2023-11-19 07:40:02,993 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:40:02,996 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:40:09,160 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:40:09,198 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:40:09,199 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 07:40:09,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:09 BoogieIcfgContainer [2023-11-19 07:40:09,211 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:40:09,215 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:40:09,215 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:40:09,219 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:40:09,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:39:59" (1/3) ... [2023-11-19 07:40:09,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd1640d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:09, skipping insertion in model container [2023-11-19 07:40:09,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:01" (2/3) ... [2023-11-19 07:40:09,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd1640d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:09, skipping insertion in model container [2023-11-19 07:40:09,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:09" (3/3) ... [2023-11-19 07:40:09,224 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_outb.i [2023-11-19 07:40:09,244 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:40:09,244 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 206 error locations. [2023-11-19 07:40:09,331 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:09,338 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;@62bf9fa1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:09,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 206 error locations. [2023-11-19 07:40:09,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 672 states, 361 states have (on average 1.811634349030471) internal successors, (654), 573 states have internal predecessors, (654), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-19 07:40:09,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:40:09,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:09,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:40:09,363 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2023-11-19 07:40:09,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:09,372 INFO L85 PathProgramCache]: Analyzing trace with hash 347267923, now seen corresponding path program 1 times [2023-11-19 07:40:09,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:09,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340751903] [2023-11-19 07:40:09,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:09,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:09,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:09,394 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:40:09,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 07:40:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:10,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:40:10,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:10,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:10,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:10,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340751903] [2023-11-19 07:40:10,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340751903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:10,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:10,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:10,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481801324] [2023-11-19 07:40:10,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:10,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:40:10,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:10,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:10,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:10,258 INFO L87 Difference]: Start difference. First operand has 672 states, 361 states have (on average 1.811634349030471) internal successors, (654), 573 states have internal predecessors, (654), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:12,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:40:14,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:40:18,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:18,520 INFO L93 Difference]: Finished difference Result 1214 states and 1451 transitions. [2023-11-19 07:40:18,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:40:18,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 07:40:18,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:18,544 INFO L225 Difference]: With dead ends: 1214 [2023-11-19 07:40:18,545 INFO L226 Difference]: Without dead ends: 1210 [2023-11-19 07:40:18,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:18,549 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 691 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 2297 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:18,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 2297 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1123 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2023-11-19 07:40:18,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2023-11-19 07:40:18,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 994. [2023-11-19 07:40:18,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 600 states have (on average 1.795) internal successors, (1077), 823 states have internal predecessors, (1077), 138 states have call successors, (138), 50 states have call predecessors, (138), 50 states have return successors, (138), 131 states have call predecessors, (138), 138 states have call successors, (138) [2023-11-19 07:40:18,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1353 transitions. [2023-11-19 07:40:18,743 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1353 transitions. Word has length 5 [2023-11-19 07:40:18,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:18,743 INFO L495 AbstractCegarLoop]: Abstraction has 994 states and 1353 transitions. [2023-11-19 07:40:18,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:18,744 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1353 transitions. [2023-11-19 07:40:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:40:18,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:18,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:40:18,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:18,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:18,950 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2023-11-19 07:40:18,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:18,951 INFO L85 PathProgramCache]: Analyzing trace with hash 347267924, now seen corresponding path program 1 times [2023-11-19 07:40:18,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:18,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076212069] [2023-11-19 07:40:18,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:18,953 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:18,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:18,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:40:18,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 07:40:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:19,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:40:19,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:19,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:19,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:19,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:19,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076212069] [2023-11-19 07:40:19,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076212069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:19,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:19,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:19,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046236887] [2023-11-19 07:40:19,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:19,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:40:19,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:19,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:19,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:19,573 INFO L87 Difference]: Start difference. First operand 994 states and 1353 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:21,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:40:23,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:40:27,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:27,354 INFO L93 Difference]: Finished difference Result 1132 states and 1451 transitions. [2023-11-19 07:40:27,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:40:27,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 07:40:27,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:27,367 INFO L225 Difference]: With dead ends: 1132 [2023-11-19 07:40:27,367 INFO L226 Difference]: Without dead ends: 1132 [2023-11-19 07:40:27,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:27,369 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 274 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:27,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 2576 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 857 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2023-11-19 07:40:27,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2023-11-19 07:40:27,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1070. [2023-11-19 07:40:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 644 states have (on average 1.7562111801242235) internal successors, (1131), 868 states have internal predecessors, (1131), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-19 07:40:27,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1445 transitions. [2023-11-19 07:40:27,430 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1445 transitions. Word has length 5 [2023-11-19 07:40:27,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:27,431 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1445 transitions. [2023-11-19 07:40:27,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:27,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1445 transitions. [2023-11-19 07:40:27,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:40:27,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:27,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:27,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:27,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:27,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2023-11-19 07:40:27,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:27,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1758197843, now seen corresponding path program 1 times [2023-11-19 07:40:27,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:27,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144739529] [2023-11-19 07:40:27,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:27,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:27,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:27,643 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:40:27,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 07:40:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:28,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:40:28,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:28,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:28,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:28,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144739529] [2023-11-19 07:40:28,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144739529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:28,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:28,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:28,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417883027] [2023-11-19 07:40:28,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:28,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:28,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:28,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:28,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:28,383 INFO L87 Difference]: Start difference. First operand 1070 states and 1445 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:40:30,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:30,260 INFO L93 Difference]: Finished difference Result 1279 states and 1534 transitions. [2023-11-19 07:40:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:30,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-19 07:40:30,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:30,270 INFO L225 Difference]: With dead ends: 1279 [2023-11-19 07:40:30,271 INFO L226 Difference]: Without dead ends: 1279 [2023-11-19 07:40:30,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:30,275 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 664 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:30,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1224 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-19 07:40:30,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2023-11-19 07:40:30,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1069. [2023-11-19 07:40:30,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 644 states have (on average 1.7484472049689441) internal successors, (1126), 867 states have internal predecessors, (1126), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-19 07:40:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1440 transitions. [2023-11-19 07:40:30,380 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1440 transitions. Word has length 11 [2023-11-19 07:40:30,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:30,380 INFO L495 AbstractCegarLoop]: Abstraction has 1069 states and 1440 transitions. [2023-11-19 07:40:30,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:40:30,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1440 transitions. [2023-11-19 07:40:30,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:40:30,382 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:30,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:30,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:30,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:30,590 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2023-11-19 07:40:30,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:30,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1758197844, now seen corresponding path program 1 times [2023-11-19 07:40:30,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:30,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827658594] [2023-11-19 07:40:30,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:30,593 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 [2023-11-19 07:40:30,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:30,594 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:40:30,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 07:40:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:31,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:40:31,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:31,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:31,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:31,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827658594] [2023-11-19 07:40:31,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827658594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:31,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:31,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:31,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281895574] [2023-11-19 07:40:31,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:31,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:31,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:31,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:31,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:31,392 INFO L87 Difference]: Start difference. First operand 1069 states and 1440 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:40:33,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:40:35,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:35,888 INFO L93 Difference]: Finished difference Result 1138 states and 1457 transitions. [2023-11-19 07:40:35,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:35,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-19 07:40:35,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:35,897 INFO L225 Difference]: With dead ends: 1138 [2023-11-19 07:40:35,898 INFO L226 Difference]: Without dead ends: 1138 [2023-11-19 07:40:35,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:35,901 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 274 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:35,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 1496 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 421 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2023-11-19 07:40:35,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2023-11-19 07:40:35,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1072. [2023-11-19 07:40:35,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 647 states have (on average 1.7449768160741885) internal successors, (1129), 870 states have internal predecessors, (1129), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-19 07:40:35,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1443 transitions. [2023-11-19 07:40:35,960 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1443 transitions. Word has length 11 [2023-11-19 07:40:35,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:35,961 INFO L495 AbstractCegarLoop]: Abstraction has 1072 states and 1443 transitions. [2023-11-19 07:40:35,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:40:35,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1443 transitions. [2023-11-19 07:40:35,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:40:35,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:35,963 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:35,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:36,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:36,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2023-11-19 07:40:36,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:36,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1346083695, now seen corresponding path program 1 times [2023-11-19 07:40:36,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:36,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140442237] [2023-11-19 07:40:36,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:36,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:36,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:36,174 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:40:36,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f860c61c-fdbf-428a-93e3-e79b6a33a27b/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 07:40:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:36,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:40:36,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:37,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:37,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:40:37,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:37,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:37,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140442237] [2023-11-19 07:40:37,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140442237] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:40:37,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:40:37,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2023-11-19 07:40:37,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053237633] [2023-11-19 07:40:37,440 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:40:37,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:40:37,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:37,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:40:37,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:40:37,441 INFO L87 Difference]: Start difference. First operand 1072 states and 1443 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:40:39,472 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 []