./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 2261d9b3f7623cbd5155b35c39657066d179b87a48a9848bd1f196c713477a75 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:46:02,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:46:02,242 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:46:02,248 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:46:02,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:46:02,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:46:02,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:46:02,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:46:02,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:46:02,278 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:46:02,279 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:46:02,279 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:46:02,280 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:46:02,280 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:46:02,281 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:46:02,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:46:02,282 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:46:02,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:46:02,283 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:46:02,284 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:46:02,285 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:46:02,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:46:02,286 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:46:02,287 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:46:02,287 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:46:02,288 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:46:02,288 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:46:02,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:46:02,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:46:02,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:02,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:46:02,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:46:02,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:46:02,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:46:02,293 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:46:02,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:46:02,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:46:02,295 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:46:02,296 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_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2261d9b3f7623cbd5155b35c39657066d179b87a48a9848bd1f196c713477a75 [2023-11-19 07:46:02,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:46:02,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:46:02,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:46:02,621 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:46:02,622 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:46:02,623 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2023-11-19 07:46:05,885 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:46:06,191 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:46:06,191 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2023-11-19 07:46:06,199 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/data/d2b94d6cc/339e637bed2c4393bab8f9f8502ac5c4/FLAG93a2ffc1c [2023-11-19 07:46:06,213 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/data/d2b94d6cc/339e637bed2c4393bab8f9f8502ac5c4 [2023-11-19 07:46:06,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:46:06,218 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:46:06,219 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:06,219 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:46:06,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:46:06,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:06" (1/1) ... [2023-11-19 07:46:06,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c75efce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:06, skipping insertion in model container [2023-11-19 07:46:06,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:06" (1/1) ... [2023-11-19 07:46:06,259 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:46:06,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:06,465 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 07:46:06,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23a38384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:06, skipping insertion in model container [2023-11-19 07:46:06,466 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:06,467 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:46:06,469 INFO L158 Benchmark]: Toolchain (without parser) took 250.22ms. Allocated memory is still 174.1MB. Free memory was 143.1MB in the beginning and 133.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:46:06,470 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 117.4MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:46:06,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.72ms. Allocated memory is still 174.1MB. Free memory was 143.1MB in the beginning and 133.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:46:06,473 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 117.4MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.72ms. Allocated memory is still 174.1MB. Free memory was 143.1MB in the beginning and 133.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 109]: 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_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 2261d9b3f7623cbd5155b35c39657066d179b87a48a9848bd1f196c713477a75 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:46:09,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:46:09,370 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:46:09,379 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:46:09,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:46:09,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:46:09,422 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:46:09,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:46:09,424 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:46:09,430 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:46:09,431 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:46:09,431 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:46:09,432 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:46:09,434 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:46:09,435 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:46:09,435 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:46:09,436 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:46:09,436 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:46:09,437 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:46:09,438 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:46:09,439 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:46:09,439 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:46:09,440 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:46:09,440 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:46:09,441 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:46:09,441 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:46:09,442 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:46:09,442 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:46:09,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:46:09,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:46:09,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:46:09,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:09,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:46:09,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:46:09,447 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:46:09,447 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:46:09,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:46:09,448 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:46:09,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:46:09,449 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:46:09,449 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:46:09,450 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_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2261d9b3f7623cbd5155b35c39657066d179b87a48a9848bd1f196c713477a75 [2023-11-19 07:46:09,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:46:09,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:46:09,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:46:09,918 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:46:09,918 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:46:09,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2023-11-19 07:46:13,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:46:13,677 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:46:13,678 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2023-11-19 07:46:13,689 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/data/9fcf188f1/827ca7d8776a4b968525deca4cea0dfb/FLAG11cd94f17 [2023-11-19 07:46:13,705 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/data/9fcf188f1/827ca7d8776a4b968525deca4cea0dfb [2023-11-19 07:46:13,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:46:13,713 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:46:13,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:13,719 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:46:13,726 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:46:13,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:13" (1/1) ... [2023-11-19 07:46:13,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23dde299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:13, skipping insertion in model container [2023-11-19 07:46:13,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:13" (1/1) ... [2023-11-19 07:46:13,766 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:46:13,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:14,000 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:46:14,005 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:46:14,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:14,053 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:46:14,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:14,127 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:46:14,128 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:46:14,136 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:46:14,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:14 WrapperNode [2023-11-19 07:46:14,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:14,139 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:14,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:46:14,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:46:14,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:14" (1/1) ... [2023-11-19 07:46:14,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:14" (1/1) ... [2023-11-19 07:46:14,223 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 103 [2023-11-19 07:46:14,224 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:14,225 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:46:14,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:46:14,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:46:14,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:14" (1/1) ... [2023-11-19 07:46:14,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:14" (1/1) ... [2023-11-19 07:46:14,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:14" (1/1) ... [2023-11-19 07:46:14,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:14" (1/1) ... [2023-11-19 07:46:14,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:14" (1/1) ... [2023-11-19 07:46:14,297 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:14" (1/1) ... [2023-11-19 07:46:14,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:14" (1/1) ... [2023-11-19 07:46:14,302 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:14" (1/1) ... [2023-11-19 07:46:14,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:46:14,307 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:46:14,307 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:46:14,307 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:46:14,308 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:14" (1/1) ... [2023-11-19 07:46:14,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:14,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:14,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:14,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:46:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:46:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:46:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:46:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:46:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:46:14,427 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:46:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:46:14,427 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:46:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:46:14,429 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:46:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:46:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:46:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:46:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:46:14,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:46:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:46:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:46:14,434 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:46:14,639 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:46:14,643 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:46:15,403 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:46:15,608 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:46:15,608 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 07:46:15,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:15 BoogieIcfgContainer [2023-11-19 07:46:15,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:46:15,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:46:15,617 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:46:15,620 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:46:15,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:46:13" (1/3) ... [2023-11-19 07:46:15,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff988b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:15, skipping insertion in model container [2023-11-19 07:46:15,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:14" (2/3) ... [2023-11-19 07:46:15,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff988b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:15, skipping insertion in model container [2023-11-19 07:46:15,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:15" (3/3) ... [2023-11-19 07:46:15,625 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2023-11-19 07:46:15,647 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:46:15,648 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-19 07:46:15,648 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:46:15,767 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:46:15,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 191 transitions, 403 flow [2023-11-19 07:46:15,930 INFO L124 PetriNetUnfolderBase]: 14/188 cut-off events. [2023-11-19 07:46:15,931 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:46:15,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 188 events. 14/188 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 230 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-11-19 07:46:15,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 191 transitions, 403 flow [2023-11-19 07:46:15,960 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 183 transitions, 384 flow [2023-11-19 07:46:15,964 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:46:15,982 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 183 transitions, 384 flow [2023-11-19 07:46:15,989 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 183 transitions, 384 flow [2023-11-19 07:46:15,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 183 transitions, 384 flow [2023-11-19 07:46:16,050 INFO L124 PetriNetUnfolderBase]: 14/183 cut-off events. [2023-11-19 07:46:16,051 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:46:16,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 183 events. 14/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 228 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-11-19 07:46:16,057 INFO L119 LiptonReduction]: Number of co-enabled transitions 3472 [2023-11-19 07:46:44,300 INFO L134 LiptonReduction]: Checked pairs total: 4324 [2023-11-19 07:46:44,301 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-11-19 07:46:44,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:46:44,323 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;@1bfc7a94, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:46:44,324 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2023-11-19 07:46:44,328 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:46:44,328 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:46:44,329 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:44,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:44,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:46:44,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 07:46:44,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:44,335 INFO L85 PathProgramCache]: Analyzing trace with hash 25254, now seen corresponding path program 1 times [2023-11-19 07:46:44,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:46:44,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689015003] [2023-11-19 07:46:44,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:44,349 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 07:46:44,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:46:44,356 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:44,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:44,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:46:44,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:44,565 INFO L378 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 8 treesize of output 7 [2023-11-19 07:46:44,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:44,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:44,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:46:44,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:46:44,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:44,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:44,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:46:44,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:44,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:46:44,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:44,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:46:44,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:44,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:46:44,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:44,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:46:44,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:46:44,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:44,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:46:44,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:44,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:45,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:45,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:45,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:45,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:46:45,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:45,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:46:45,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:45,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-19 07:46:45,155 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 07:46:45,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:45,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:46:45,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689015003] [2023-11-19 07:46:45,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689015003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:45,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:45,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:45,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332213309] [2023-11-19 07:46:45,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:45,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:45,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:46:45,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:45,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:45,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 382 [2023-11-19 07:46:45,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:45,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:45,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 382 [2023-11-19 07:46:45,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:46,177 INFO L124 PetriNetUnfolderBase]: 1820/2570 cut-off events. [2023-11-19 07:46:46,178 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-11-19 07:46:46,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5238 conditions, 2570 events. 1820/2570 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10360 event pairs, 1428 based on Foata normal form. 0/1027 useless extension candidates. Maximal degree in co-relation 4490. Up to 2569 conditions per place. [2023-11-19 07:46:46,212 INFO L140 encePairwiseOnDemand]: 369/382 looper letters, 44 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2023-11-19 07:46:46,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 214 flow [2023-11-19 07:46:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:46,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2023-11-19 07:46:46,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4424083769633508 [2023-11-19 07:46:46,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2023-11-19 07:46:46,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2023-11-19 07:46:46,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:46,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2023-11-19 07:46:46,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:46,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:46,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:46,257 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 120 flow. Second operand 3 states and 507 transitions. [2023-11-19 07:46:46,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 214 flow [2023-11-19 07:46:46,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 202 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:46:46,267 INFO L231 Difference]: Finished difference. Result has 47 places, 48 transitions, 127 flow [2023-11-19 07:46:46,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=47, PETRI_TRANSITIONS=48} [2023-11-19 07:46:46,273 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -10 predicate places. [2023-11-19 07:46:46,273 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 127 flow [2023-11-19 07:46:46,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:46,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:46,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:46:46,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:46,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:46,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 07:46:46,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:46,478 INFO L85 PathProgramCache]: Analyzing trace with hash 25340, now seen corresponding path program 1 times [2023-11-19 07:46:46,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:46:46,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215065716] [2023-11-19 07:46:46,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:46,479 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 07:46:46,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:46:46,481 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:46,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:46,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:46:46,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:46,587 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 07:46:46,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:46,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:46:46,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215065716] [2023-11-19 07:46:46,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215065716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:46,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:46,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:46,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542669955] [2023-11-19 07:46:46,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:46,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:46,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:46:46,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:46,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:46,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 382 [2023-11-19 07:46:46,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 48 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:46,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:46,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 382 [2023-11-19 07:46:46,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:47,336 INFO L124 PetriNetUnfolderBase]: 1817/2567 cut-off events. [2023-11-19 07:46:47,336 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-19 07:46:47,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5177 conditions, 2567 events. 1817/2567 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10351 event pairs, 1428 based on Foata normal form. 0/1029 useless extension candidates. Maximal degree in co-relation 5164. Up to 2566 conditions per place. [2023-11-19 07:46:47,359 INFO L140 encePairwiseOnDemand]: 377/382 looper letters, 44 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-19 07:46:47,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 206 flow [2023-11-19 07:46:47,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:47,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:47,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 505 transitions. [2023-11-19 07:46:47,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4406631762652705 [2023-11-19 07:46:47,365 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 505 transitions. [2023-11-19 07:46:47,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 505 transitions. [2023-11-19 07:46:47,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:47,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 505 transitions. [2023-11-19 07:46:47,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:47,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:47,376 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:47,376 INFO L175 Difference]: Start difference. First operand has 47 places, 48 transitions, 127 flow. Second operand 3 states and 505 transitions. [2023-11-19 07:46:47,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 206 flow [2023-11-19 07:46:47,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:47,380 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 114 flow [2023-11-19 07:46:47,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-11-19 07:46:47,381 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2023-11-19 07:46:47,383 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 114 flow [2023-11-19 07:46:47,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:47,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:47,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:46:47,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:47,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:47,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 07:46:47,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:47,588 INFO L85 PathProgramCache]: Analyzing trace with hash 25255, now seen corresponding path program 1 times [2023-11-19 07:46:47,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:46:47,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999248060] [2023-11-19 07:46:47,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:47,589 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 07:46:47,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:46:47,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:47,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:47,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:46:47,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:47,666 INFO L378 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 [2023-11-19 07:46:47,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:46:47,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:46:47,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:46:47,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:46:47,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 07:46:47,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 07:46:47,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:46:47,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:46:47,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:46:47,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:46:47,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:46:47,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:46:47,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 07:46:47,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:46:47,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:46:47,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:46:47,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:46:47,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:46:47,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 07:46:47,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 07:46:47,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:47,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:46:48,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:48,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-19 07:46:48,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:48,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 07:46:48,039 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 07:46:48,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:48,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:46:48,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999248060] [2023-11-19 07:46:48,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999248060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:48,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:48,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:48,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712085561] [2023-11-19 07:46:48,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:48,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:48,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:46:48,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:48,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:48,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 382 [2023-11-19 07:46:48,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:48,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:48,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 382 [2023-11-19 07:46:48,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:48,674 INFO L124 PetriNetUnfolderBase]: 1817/2565 cut-off events. [2023-11-19 07:46:48,674 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-19 07:46:48,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5174 conditions, 2565 events. 1817/2565 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10289 event pairs, 1428 based on Foata normal form. 2/1029 useless extension candidates. Maximal degree in co-relation 5162. Up to 2562 conditions per place. [2023-11-19 07:46:48,695 INFO L140 encePairwiseOnDemand]: 377/382 looper letters, 40 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2023-11-19 07:46:48,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 200 flow [2023-11-19 07:46:48,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:48,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-11-19 07:46:48,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336823734729494 [2023-11-19 07:46:48,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-11-19 07:46:48,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-11-19 07:46:48,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:48,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-11-19 07:46:48,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:48,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:48,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:48,705 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 114 flow. Second operand 3 states and 497 transitions. [2023-11-19 07:46:48,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 200 flow [2023-11-19 07:46:48,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 194 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:48,709 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 114 flow [2023-11-19 07:46:48,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-11-19 07:46:48,711 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -10 predicate places. [2023-11-19 07:46:48,711 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 114 flow [2023-11-19 07:46:48,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:48,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:48,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:46:48,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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)] Ended with exit code 0 [2023-11-19 07:46:48,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:48,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 07:46:48,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:48,915 INFO L85 PathProgramCache]: Analyzing trace with hash 785274, now seen corresponding path program 1 times [2023-11-19 07:46:48,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:46:48,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121361935] [2023-11-19 07:46:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:48,917 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 07:46:48,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:46:48,918 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:48,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:49,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:46:49,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:49,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:49,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:49,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:49,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2023-11-19 07:46:49,085 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-19 07:46:49,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-11-19 07:46:49,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:49,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:49,194 INFO L349 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2023-11-19 07:46:49,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 26 [2023-11-19 07:46:49,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:49,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-19 07:46:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:49,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:49,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:46:49,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121361935] [2023-11-19 07:46:49,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121361935] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:46:49,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:46:49,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-19 07:46:49,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411157695] [2023-11-19 07:46:49,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:49,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:49,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:46:49,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:49,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:50,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 382 [2023-11-19 07:46:50,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:50,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:50,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 382 [2023-11-19 07:46:50,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:52,057 INFO L124 PetriNetUnfolderBase]: 1823/2577 cut-off events. [2023-11-19 07:46:52,057 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-19 07:46:52,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5217 conditions, 2577 events. 1823/2577 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10355 event pairs, 1428 based on Foata normal form. 0/1034 useless extension candidates. Maximal degree in co-relation 5147. Up to 2567 conditions per place. [2023-11-19 07:46:52,078 INFO L140 encePairwiseOnDemand]: 376/382 looper letters, 45 selfloop transitions, 11 changer transitions 0/56 dead transitions. [2023-11-19 07:46:52,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 56 transitions, 286 flow [2023-11-19 07:46:52,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:46:52,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:46:52,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 899 transitions. [2023-11-19 07:46:52,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39223385689354273 [2023-11-19 07:46:52,083 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 899 transitions. [2023-11-19 07:46:52,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 899 transitions. [2023-11-19 07:46:52,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:52,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 899 transitions. [2023-11-19 07:46:52,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:52,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 382.0) internal successors, (2674), 7 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:52,095 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 382.0) internal successors, (2674), 7 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:52,095 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 114 flow. Second operand 6 states and 899 transitions. [2023-11-19 07:46:52,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 56 transitions, 286 flow [2023-11-19 07:46:52,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 56 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:52,098 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 200 flow [2023-11-19 07:46:52,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2023-11-19 07:46:52,099 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2023-11-19 07:46:52,099 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 200 flow [2023-11-19 07:46:52,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:52,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:52,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:46:52,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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)] Ended with exit code 0 [2023-11-19 07:46:52,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:52,303 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 07:46:52,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:52,304 INFO L85 PathProgramCache]: Analyzing trace with hash 785275, now seen corresponding path program 1 times [2023-11-19 07:46:52,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:46:52,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242838814] [2023-11-19 07:46:52,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:52,305 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 07:46:52,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:46:52,307 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:52,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:52,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:46:52,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:52,486 INFO L349 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2023-11-19 07:46:52,487 INFO L378 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 4 case distinctions, treesize of input 35 treesize of output 40 [2023-11-19 07:46:52,591 INFO L349 Elim1Store]: treesize reduction 103, result has 12.7 percent of original size [2023-11-19 07:46:52,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 40 [2023-11-19 07:46:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:46:52,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:52,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:46:52,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242838814] [2023-11-19 07:46:52,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242838814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:52,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:52,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:52,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103723148] [2023-11-19 07:46:52,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:52,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:52,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:46:52,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:52,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:52,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 382 [2023-11-19 07:46:52,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:52,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:52,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 382 [2023-11-19 07:46:52,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:53,432 INFO L124 PetriNetUnfolderBase]: 1446/2073 cut-off events. [2023-11-19 07:46:53,432 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-19 07:46:53,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4223 conditions, 2073 events. 1446/2073 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8074 event pairs, 1128 based on Foata normal form. 2/890 useless extension candidates. Maximal degree in co-relation 4177. Up to 2073 conditions per place. [2023-11-19 07:46:53,448 INFO L140 encePairwiseOnDemand]: 379/382 looper letters, 48 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-11-19 07:46:53,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 272 flow [2023-11-19 07:46:53,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:53,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-11-19 07:46:53,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328097731239092 [2023-11-19 07:46:53,452 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-11-19 07:46:53,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-11-19 07:46:53,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:53,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-11-19 07:46:53,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:53,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:53,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:53,475 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 200 flow. Second operand 3 states and 496 transitions. [2023-11-19 07:46:53,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 272 flow [2023-11-19 07:46:53,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 49 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:53,481 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 174 flow [2023-11-19 07:46:53,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-11-19 07:46:53,484 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -4 predicate places. [2023-11-19 07:46:53,484 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 174 flow [2023-11-19 07:46:53,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:53,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:53,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:46:53,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:53,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:53,689 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 07:46:53,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:53,689 INFO L85 PathProgramCache]: Analyzing trace with hash 785188, now seen corresponding path program 1 times [2023-11-19 07:46:53,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:46:53,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635869562] [2023-11-19 07:46:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:53,690 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 07:46:53,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:46:53,691 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:53,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 (7)] Waiting until timeout for monitored process [2023-11-19 07:46:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:53,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:46:53,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:53,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-19 07:46:53,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:53,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:53,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:53,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:46:53,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:53,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-19 07:46:53,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:53,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:46:53,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:53,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:53,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:53,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:46:53,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:53,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:53,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:53,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:46:53,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:53,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:53,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:53,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:46:53,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:53,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:53,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:53,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:54,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:54,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:46:54,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:54,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:46:54,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:54,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:54,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:54,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:46:54,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:54,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:54,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:54,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:46:54,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:54,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:54,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:54,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:46:54,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:54,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:54,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:54,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:46:54,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:54,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:46:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:54,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:54,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:46:54,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635869562] [2023-11-19 07:46:54,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635869562] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:46:54,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:46:54,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-19 07:46:54,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353534657] [2023-11-19 07:46:54,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:54,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:54,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:46:54,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:54,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:55,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 382 [2023-11-19 07:46:55,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:55,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:55,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 382 [2023-11-19 07:46:55,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:56,328 INFO L124 PetriNetUnfolderBase]: 1445/2070 cut-off events. [2023-11-19 07:46:56,328 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-19 07:46:56,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4212 conditions, 2070 events. 1445/2070 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8113 event pairs, 1128 based on Foata normal form. 3/888 useless extension candidates. Maximal degree in co-relation 4199. Up to 2067 conditions per place. [2023-11-19 07:46:56,347 INFO L140 encePairwiseOnDemand]: 378/382 looper letters, 40 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2023-11-19 07:46:56,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 48 transitions, 264 flow [2023-11-19 07:46:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:46:56,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:46:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 921 transitions. [2023-11-19 07:46:56,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4018324607329843 [2023-11-19 07:46:56,356 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 921 transitions. [2023-11-19 07:46:56,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 921 transitions. [2023-11-19 07:46:56,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:56,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 921 transitions. [2023-11-19 07:46:56,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 153.5) internal successors, (921), 6 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:56,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 382.0) internal successors, (2674), 7 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:56,366 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 382.0) internal successors, (2674), 7 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:56,366 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 174 flow. Second operand 6 states and 921 transitions. [2023-11-19 07:46:56,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 48 transitions, 264 flow [2023-11-19 07:46:56,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 245 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:56,370 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 165 flow [2023-11-19 07:46:56,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=165, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-11-19 07:46:56,373 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2023-11-19 07:46:56,374 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 165 flow [2023-11-19 07:46:56,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:56,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:56,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:46:56,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 (7)] Ended with exit code 0 [2023-11-19 07:46:56,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:56,577 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 07:46:56,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:56,577 INFO L85 PathProgramCache]: Analyzing trace with hash 754665565, now seen corresponding path program 1 times [2023-11-19 07:46:56,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:46:56,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051930965] [2023-11-19 07:46:56,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:56,578 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 07:46:56,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:46:56,579 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 07:46:56,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f25f22bf-a8d7-41be-9df9-bd6e4f763a93/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 (8)] Waiting until timeout for monitored process [2023-11-19 07:46:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:56,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:46:56,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:56,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:56,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-19 07:46:56,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:56,791 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-19 07:46:56,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2023-11-19 07:46:56,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:56,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2023-11-19 07:46:56,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:56,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:56,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-19 07:46:56,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:56,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-19 07:46:56,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:56,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:56,907 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-19 07:46:56,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 13 [2023-11-19 07:46:56,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2023-11-19 07:46:56,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:56,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:56,983 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-19 07:46:56,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 13 [2023-11-19 07:46:57,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:57,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:57,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-19 07:46:57,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:57,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:57,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:57,117 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-19 07:46:57,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2023-11-19 07:46:57,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:57,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 07:46:57,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:57,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:57,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-19 07:46:57,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:57,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:46:57,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2023-11-19 07:46:57,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:57,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:58,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:58,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:46:58,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051930965] [2023-11-19 07:46:58,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051930965] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:46:58,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:46:58,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-19 07:46:58,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699328124] [2023-11-19 07:46:58,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:58,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:46:58,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:46:58,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:46:58,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56