./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI --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 edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:27:36,155 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:27:36,231 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:27:36,237 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:27:36,238 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:27:36,272 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:27:36,273 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:27:36,273 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:27:36,274 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:27:36,275 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:27:36,275 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:27:36,276 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:27:36,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:27:36,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:27:36,278 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:27:36,279 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:27:36,279 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:27:36,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:27:36,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:27:36,284 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:27:36,289 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:27:36,290 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:27:36,290 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:27:36,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:27:36,292 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:27:36,293 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:27:36,293 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:27:36,294 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:27:36,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:27:36,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:27:36,296 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:27:36,297 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:27:36,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:27:36,297 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:27:36,297 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:27:36,298 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:27:36,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:27:36,298 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:27:36,298 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:27:36,298 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:27:36,299 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:27:36,299 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_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e [2023-11-24 21:27:36,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:27:36,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:27:36,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:27:36,669 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:27:36,670 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:27:36,671 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2023-11-24 21:27:39,973 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:27:40,349 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:27:40,350 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2023-11-24 21:27:40,402 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/data/be88ee669/84f4970fb6454c4a8e43e715784ba200/FLAGee9af28c6 [2023-11-24 21:27:40,422 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/data/be88ee669/84f4970fb6454c4a8e43e715784ba200 [2023-11-24 21:27:40,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:27:40,436 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:27:40,442 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:27:40,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:27:40,448 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:27:40,449 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:27:40" (1/1) ... [2023-11-24 21:27:40,451 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7635afb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:40, skipping insertion in model container [2023-11-24 21:27:40,451 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:27:40" (1/1) ... [2023-11-24 21:27:40,535 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:27:41,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:27:41,054 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) [2023-11-24 21:27:41,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@50d06743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:41, skipping insertion in model container [2023-11-24 21:27:41,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:27:41,063 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:27:41,066 INFO L158 Benchmark]: Toolchain (without parser) took 628.77ms. Allocated memory is still 153.1MB. Free memory was 103.9MB in the beginning and 83.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:27:41,066 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 96.5MB. Free memory is still 45.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:27:41,067 INFO L158 Benchmark]: CACSL2BoogieTranslator took 620.81ms. Allocated memory is still 153.1MB. Free memory was 103.5MB in the beginning and 83.0MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:27:41,069 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 96.5MB. Free memory is still 45.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 620.81ms. Allocated memory is still 153.1MB. Free memory was 103.5MB in the beginning and 83.0MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3902]: 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_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI --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 edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:27:43,541 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:27:43,686 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:27:43,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:27:43,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:27:43,742 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:27:43,743 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:27:43,743 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:27:43,745 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:27:43,745 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:27:43,746 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:27:43,747 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:27:43,748 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:27:43,753 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:27:43,753 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:27:43,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:27:43,755 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:27:43,755 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:27:43,756 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:27:43,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:27:43,758 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:27:43,758 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:27:43,759 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:27:43,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:27:43,760 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:27:43,760 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:27:43,761 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:27:43,761 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:27:43,762 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:27:43,762 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:27:43,764 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:27:43,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:27:43,765 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:27:43,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:27:43,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:27:43,766 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:27:43,767 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:27:43,768 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:27:43,768 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:27:43,769 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:27:43,769 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:27:43,769 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:27:43,770 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:27:43,770 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:27:43,771 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_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e [2023-11-24 21:27:44,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:27:44,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:27:44,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:27:44,163 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:27:44,163 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:27:44,165 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2023-11-24 21:27:47,498 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:27:47,963 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:27:47,964 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2023-11-24 21:27:48,001 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/data/488b03c8e/aeb1dd0e237e43c684c22b5838fb22dc/FLAGcb0a43ca4 [2023-11-24 21:27:48,016 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/data/488b03c8e/aeb1dd0e237e43c684c22b5838fb22dc [2023-11-24 21:27:48,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:27:48,021 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:27:48,022 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:27:48,022 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:27:48,028 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:27:48,029 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:27:48" (1/1) ... [2023-11-24 21:27:48,030 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16083e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:48, skipping insertion in model container [2023-11-24 21:27:48,030 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:27:48" (1/1) ... [2023-11-24 21:27:48,155 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:27:48,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:27:48,875 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:27:48,922 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:27:48,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:27:49,004 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:27:49,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:27:49,168 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:27:49,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:49 WrapperNode [2023-11-24 21:27:49,169 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:27:49,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:27:49,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:27:49,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:27:49,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:49" (1/1) ... [2023-11-24 21:27:49,214 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:49" (1/1) ... [2023-11-24 21:27:49,264 INFO L138 Inliner]: procedures = 250, calls = 48, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 150 [2023-11-24 21:27:49,265 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:27:49,266 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:27:49,266 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:27:49,266 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:27:49,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:49" (1/1) ... [2023-11-24 21:27:49,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:49" (1/1) ... [2023-11-24 21:27:49,292 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:49" (1/1) ... [2023-11-24 21:27:49,333 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 3, 3, 2, 13]. 57 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 1, 1, 0, 0]. The 10 writes are split as follows [0, 1, 1, 2, 6]. [2023-11-24 21:27:49,333 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:49" (1/1) ... [2023-11-24 21:27:49,333 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:49" (1/1) ... [2023-11-24 21:27:49,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:49" (1/1) ... [2023-11-24 21:27:49,377 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:49" (1/1) ... [2023-11-24 21:27:49,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:49" (1/1) ... [2023-11-24 21:27:49,404 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:49" (1/1) ... [2023-11-24 21:27:49,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:27:49,429 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:27:49,429 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:27:49,429 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:27:49,430 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:49" (1/1) ... [2023-11-24 21:27:49,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:27:49,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:27:49,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:27:49,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:27:49,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:27:49,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:27:49,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:27:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-24 21:27:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-24 21:27:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-24 21:27:49,500 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-24 21:27:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:27:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:27:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:27:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:27:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:27:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 21:27:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-24 21:27:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:27:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:27:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:27:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 21:27:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-24 21:27:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-11-24 21:27:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-11-24 21:27:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-11-24 21:27:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-11-24 21:27:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-11-24 21:27:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-24 21:27:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-24 21:27:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:27:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 21:27:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 21:27:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-24 21:27:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-24 21:27:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-24 21:27:49,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:27:49,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:27:49,508 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:27:49,911 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:27:49,914 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:27:50,528 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:27:50,798 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:27:50,798 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:27:50,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:27:50 BoogieIcfgContainer [2023-11-24 21:27:50,799 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:27:50,802 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:27:50,802 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:27:50,806 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:27:50,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:27:48" (1/3) ... [2023-11-24 21:27:50,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bca2be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:27:50, skipping insertion in model container [2023-11-24 21:27:50,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:49" (2/3) ... [2023-11-24 21:27:50,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bca2be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:27:50, skipping insertion in model container [2023-11-24 21:27:50,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:27:50" (3/3) ... [2023-11-24 21:27:50,810 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2023-11-24 21:27:50,830 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:27:50,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-11-24 21:27:50,831 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:27:50,928 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 21:27:50,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 144 transitions, 302 flow [2023-11-24 21:27:51,057 INFO L124 PetriNetUnfolderBase]: 18/180 cut-off events. [2023-11-24 21:27:51,058 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 21:27:51,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 180 events. 18/180 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 595 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 95. Up to 4 conditions per place. [2023-11-24 21:27:51,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 144 transitions, 302 flow [2023-11-24 21:27:51,070 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 142 transitions, 296 flow [2023-11-24 21:27:51,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:27:51,088 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;@e2583c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:27:51,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-11-24 21:27:51,093 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:27:51,093 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-24 21:27:51,093 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:27:51,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:51,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:27:51,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:27:51,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:51,100 INFO L85 PathProgramCache]: Analyzing trace with hash 512946, now seen corresponding path program 1 times [2023-11-24 21:27:51,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:27:51,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656814751] [2023-11-24 21:27:51,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:51,118 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 [2023-11-24 21:27:51,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:27:51,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:27:51,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:27:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:51,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:27:51,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:27:51,413 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 [2023-11-24 21:27:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:51,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:27:51,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:27:51,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656814751] [2023-11-24 21:27:51,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656814751] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:51,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:51,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:27:51,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245549757] [2023-11-24 21:27:51,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:51,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:27:51,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:27:51,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:27:51,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:27:51,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 144 [2023-11-24 21:27:51,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 142 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2023-11-24 21:27:51,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:51,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 144 [2023-11-24 21:27:51,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:52,458 INFO L124 PetriNetUnfolderBase]: 707/2163 cut-off events. [2023-11-24 21:27:52,458 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-24 21:27:52,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3379 conditions, 2163 events. 707/2163 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 17605 event pairs, 95 based on Foata normal form. 156/1920 useless extension candidates. Maximal degree in co-relation 3185. Up to 1002 conditions per place. [2023-11-24 21:27:52,491 INFO L140 encePairwiseOnDemand]: 126/144 looper letters, 54 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-11-24 21:27:52,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 130 transitions, 384 flow [2023-11-24 21:27:52,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:27:52,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:27:52,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-11-24 21:27:52,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2023-11-24 21:27:52,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-11-24 21:27:52,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-11-24 21:27:52,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:52,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-11-24 21:27:52,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2023-11-24 21:27:52,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-24 21:27:52,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-24 21:27:52,536 INFO L175 Difference]: Start difference. First operand has 134 places, 142 transitions, 296 flow. Second operand 3 states and 300 transitions. [2023-11-24 21:27:52,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 130 transitions, 384 flow [2023-11-24 21:27:52,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 130 transitions, 376 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:27:52,547 INFO L231 Difference]: Finished difference. Result has 122 places, 120 transitions, 248 flow [2023-11-24 21:27:52,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=122, PETRI_TRANSITIONS=120} [2023-11-24 21:27:52,554 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -12 predicate places. [2023-11-24 21:27:52,555 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 120 transitions, 248 flow [2023-11-24 21:27:52,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2023-11-24 21:27:52,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:52,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:27:52,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:27:52,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:27:52,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:27:52,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:52,761 INFO L85 PathProgramCache]: Analyzing trace with hash 512947, now seen corresponding path program 1 times [2023-11-24 21:27:52,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:27:52,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816780125] [2023-11-24 21:27:52,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:52,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:52,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:27:52,764 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:27:52,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:27:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:52,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:27:52,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:27:52,950 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 5 [2023-11-24 21:27:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:52,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:27:52,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:27:52,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816780125] [2023-11-24 21:27:52,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816780125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:52,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:52,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:27:52,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613518562] [2023-11-24 21:27:52,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:52,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:27:52,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:27:52,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:27:52,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:27:53,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 144 [2023-11-24 21:27:53,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 120 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2023-11-24 21:27:53,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:53,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 144 [2023-11-24 21:27:53,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:53,866 INFO L124 PetriNetUnfolderBase]: 707/2159 cut-off events. [2023-11-24 21:27:53,866 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-24 21:27:53,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 2159 events. 707/2159 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 17512 event pairs, 95 based on Foata normal form. 2/1762 useless extension candidates. Maximal degree in co-relation 494. Up to 1002 conditions per place. [2023-11-24 21:27:53,886 INFO L140 encePairwiseOnDemand]: 138/144 looper letters, 52 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2023-11-24 21:27:53,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 126 transitions, 368 flow [2023-11-24 21:27:53,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:27:53,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:27:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-11-24 21:27:53,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2023-11-24 21:27:53,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-11-24 21:27:53,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-11-24 21:27:53,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:53,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-11-24 21:27:53,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2023-11-24 21:27:53,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-24 21:27:53,894 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-24 21:27:53,894 INFO L175 Difference]: Start difference. First operand has 122 places, 120 transitions, 248 flow. Second operand 3 states and 292 transitions. [2023-11-24 21:27:53,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 126 transitions, 368 flow [2023-11-24 21:27:53,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 126 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:27:53,900 INFO L231 Difference]: Finished difference. Result has 118 places, 116 transitions, 240 flow [2023-11-24 21:27:53,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=118, PETRI_TRANSITIONS=116} [2023-11-24 21:27:53,901 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -16 predicate places. [2023-11-24 21:27:53,902 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 116 transitions, 240 flow [2023-11-24 21:27:53,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2023-11-24 21:27:53,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:53,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-24 21:27:53,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:27:54,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:27:54,106 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:27:54,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:54,107 INFO L85 PathProgramCache]: Analyzing trace with hash 15899294, now seen corresponding path program 1 times [2023-11-24 21:27:54,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:27:54,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137718257] [2023-11-24 21:27:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:54,109 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 [2023-11-24 21:27:54,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:27:54,111 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:27:54,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:27:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:54,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:27:54,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:27:54,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:54,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:27:54,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:27:54,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137718257] [2023-11-24 21:27:54,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137718257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:54,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:54,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:27:54,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417784527] [2023-11-24 21:27:54,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:54,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:27:54,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:27:54,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:27:54,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:27:54,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 144 [2023-11-24 21:27:54,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 116 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2023-11-24 21:27:54,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:54,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 144 [2023-11-24 21:27:54,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:54,771 INFO L124 PetriNetUnfolderBase]: 706/1806 cut-off events. [2023-11-24 21:27:54,771 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-24 21:27:54,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3043 conditions, 1806 events. 706/1806 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 12904 event pairs, 645 based on Foata normal form. 1/1494 useless extension candidates. Maximal degree in co-relation 901. Up to 1092 conditions per place. [2023-11-24 21:27:54,786 INFO L140 encePairwiseOnDemand]: 141/144 looper letters, 52 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2023-11-24 21:27:54,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 125 transitions, 366 flow [2023-11-24 21:27:54,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:27:54,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:27:54,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-11-24 21:27:54,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6898148148148148 [2023-11-24 21:27:54,789 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-11-24 21:27:54,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-11-24 21:27:54,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:54,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-11-24 21:27:54,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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) [2023-11-24 21:27:54,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-24 21:27:54,793 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-24 21:27:54,794 INFO L175 Difference]: Start difference. First operand has 118 places, 116 transitions, 240 flow. Second operand 3 states and 298 transitions. [2023-11-24 21:27:54,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 125 transitions, 366 flow [2023-11-24 21:27:54,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 125 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:27:54,801 INFO L231 Difference]: Finished difference. Result has 118 places, 115 transitions, 238 flow [2023-11-24 21:27:54,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=118, PETRI_TRANSITIONS=115} [2023-11-24 21:27:54,803 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -16 predicate places. [2023-11-24 21:27:54,803 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 115 transitions, 238 flow [2023-11-24 21:27:54,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2023-11-24 21:27:54,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:54,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:54,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:27:55,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:27:55,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:27:55,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:55,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1240814598, now seen corresponding path program 1 times [2023-11-24 21:27:55,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:27:55,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755078684] [2023-11-24 21:27:55,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:55,010 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 [2023-11-24 21:27:55,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:27:55,011 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:27:55,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:27:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:55,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:27:55,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:27:55,243 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:27:55,244 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:27:55,245 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:27:55,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 41 [2023-11-24 21:27:55,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 21:27:55,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 53 [2023-11-24 21:27:55,410 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 21:27:55,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 45 [2023-11-24 21:27:55,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:55,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:27:55,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:27:55,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755078684] [2023-11-24 21:27:55,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755078684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:55,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:55,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:27:55,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843438589] [2023-11-24 21:27:55,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:55,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:27:55,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:27:55,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:27:55,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:27:55,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 144 [2023-11-24 21:27:55,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 115 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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) [2023-11-24 21:27:55,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:55,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 144 [2023-11-24 21:27:55,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:56,791 INFO L124 PetriNetUnfolderBase]: 1153/2821 cut-off events. [2023-11-24 21:27:56,792 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-24 21:27:56,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4779 conditions, 2821 events. 1153/2821 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 21351 event pairs, 684 based on Foata normal form. 1/2339 useless extension candidates. Maximal degree in co-relation 4410. Up to 1845 conditions per place. [2023-11-24 21:27:56,816 INFO L140 encePairwiseOnDemand]: 137/144 looper letters, 52 selfloop transitions, 6 changer transitions 0/122 dead transitions. [2023-11-24 21:27:56,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 122 transitions, 369 flow [2023-11-24 21:27:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:27:56,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:27:56,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2023-11-24 21:27:56,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6371527777777778 [2023-11-24 21:27:56,818 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2023-11-24 21:27:56,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2023-11-24 21:27:56,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:56,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2023-11-24 21:27:56,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 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) [2023-11-24 21:27:56,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-24 21:27:56,822 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-24 21:27:56,822 INFO L175 Difference]: Start difference. First operand has 118 places, 115 transitions, 238 flow. Second operand 4 states and 367 transitions. [2023-11-24 21:27:56,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 122 transitions, 369 flow [2023-11-24 21:27:56,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 122 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:27:56,827 INFO L231 Difference]: Finished difference. Result has 117 places, 115 transitions, 258 flow [2023-11-24 21:27:56,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2023-11-24 21:27:56,828 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -17 predicate places. [2023-11-24 21:27:56,828 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 258 flow [2023-11-24 21:27:56,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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) [2023-11-24 21:27:56,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:56,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:56,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:27:57,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:27:57,041 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:27:57,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:57,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1628468711, now seen corresponding path program 1 times [2023-11-24 21:27:57,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:27:57,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889217533] [2023-11-24 21:27:57,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:57,042 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 [2023-11-24 21:27:57,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:27:57,044 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:27:57,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:27:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:57,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:27:57,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:27:57,303 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:27:57,303 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:27:57,304 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:27:57,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 41 [2023-11-24 21:27:57,464 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 21:27:57,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 45 [2023-11-24 21:27:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:57,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:27:57,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:27:57,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889217533] [2023-11-24 21:27:57,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889217533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:57,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:57,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:27:57,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363575399] [2023-11-24 21:27:57,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:57,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:27:57,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:27:57,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:27:57,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:27:57,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 144 [2023-11-24 21:27:57,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 115 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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) [2023-11-24 21:27:57,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:57,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 144 [2023-11-24 21:27:57,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:58,662 INFO L124 PetriNetUnfolderBase]: 1153/2818 cut-off events. [2023-11-24 21:27:58,662 INFO L125 PetriNetUnfolderBase]: For 210/216 co-relation queries the response was YES. [2023-11-24 21:27:58,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5003 conditions, 2818 events. 1153/2818 cut-off events. For 210/216 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 21290 event pairs, 684 based on Foata normal form. 7/2342 useless extension candidates. Maximal degree in co-relation 2047. Up to 1845 conditions per place. [2023-11-24 21:27:58,684 INFO L140 encePairwiseOnDemand]: 137/144 looper letters, 51 selfloop transitions, 6 changer transitions 0/119 dead transitions. [2023-11-24 21:27:58,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 119 transitions, 381 flow [2023-11-24 21:27:58,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:27:58,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:27:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2023-11-24 21:27:58,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2023-11-24 21:27:58,687 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 366 transitions. [2023-11-24 21:27:58,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 366 transitions. [2023-11-24 21:27:58,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:58,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 366 transitions. [2023-11-24 21:27:58,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 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) [2023-11-24 21:27:58,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-24 21:27:58,691 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-24 21:27:58,691 INFO L175 Difference]: Start difference. First operand has 117 places, 115 transitions, 258 flow. Second operand 4 states and 366 transitions. [2023-11-24 21:27:58,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 119 transitions, 381 flow [2023-11-24 21:27:58,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 119 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:27:58,695 INFO L231 Difference]: Finished difference. Result has 115 places, 112 transitions, 258 flow [2023-11-24 21:27:58,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=115, PETRI_TRANSITIONS=112} [2023-11-24 21:27:58,697 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -19 predicate places. [2023-11-24 21:27:58,697 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 112 transitions, 258 flow [2023-11-24 21:27:58,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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) [2023-11-24 21:27:58,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:58,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:58,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:27:58,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:27:58,905 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:27:58,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:58,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1057112590, now seen corresponding path program 1 times [2023-11-24 21:27:58,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:27:58,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870642343] [2023-11-24 21:27:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:58,907 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 [2023-11-24 21:27:58,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:27:58,908 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:27:58,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:27:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:59,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:27:59,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:27:59,188 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-24 21:27:59,189 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 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-24 21:27:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:59,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:27:59,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:27:59,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870642343] [2023-11-24 21:27:59,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870642343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:59,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:59,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:27:59,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154099250] [2023-11-24 21:27:59,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:59,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:27:59,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:27:59,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:27:59,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:27:59,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 144 [2023-11-24 21:27:59,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 112 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2023-11-24 21:27:59,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:59,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 144 [2023-11-24 21:27:59,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:59,941 INFO L124 PetriNetUnfolderBase]: 820/2124 cut-off events. [2023-11-24 21:27:59,941 INFO L125 PetriNetUnfolderBase]: For 69/71 co-relation queries the response was YES. [2023-11-24 21:27:59,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3635 conditions, 2124 events. 820/2124 cut-off events. For 69/71 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 15381 event pairs, 610 based on Foata normal form. 45/1856 useless extension candidates. Maximal degree in co-relation 1477. Up to 1131 conditions per place. [2023-11-24 21:27:59,964 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 57 selfloop transitions, 3 changer transitions 0/127 dead transitions. [2023-11-24 21:27:59,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 127 transitions, 408 flow [2023-11-24 21:27:59,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:27:59,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:27:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-11-24 21:27:59,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6967592592592593 [2023-11-24 21:27:59,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-11-24 21:27:59,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-11-24 21:27:59,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:59,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-11-24 21:27:59,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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) [2023-11-24 21:27:59,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-24 21:27:59,974 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-24 21:27:59,974 INFO L175 Difference]: Start difference. First operand has 115 places, 112 transitions, 258 flow. Second operand 3 states and 301 transitions. [2023-11-24 21:27:59,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 127 transitions, 408 flow [2023-11-24 21:27:59,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 127 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:27:59,980 INFO L231 Difference]: Finished difference. Result has 114 places, 111 transitions, 261 flow [2023-11-24 21:27:59,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=114, PETRI_TRANSITIONS=111} [2023-11-24 21:27:59,985 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -20 predicate places. [2023-11-24 21:27:59,985 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 261 flow [2023-11-24 21:27:59,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2023-11-24 21:27:59,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:59,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:00,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:00,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:28:00,192 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:28:00,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:00,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1057112591, now seen corresponding path program 1 times [2023-11-24 21:28:00,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:00,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725225627] [2023-11-24 21:28:00,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:00,194 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 [2023-11-24 21:28:00,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:00,195 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:28:00,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:28:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:00,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:28:00,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:00,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:28:00,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-24 21:28:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:00,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:00,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:00,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725225627] [2023-11-24 21:28:00,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725225627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:00,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:00,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:28:00,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459472326] [2023-11-24 21:28:00,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:00,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:28:00,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:00,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:28:00,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:28:01,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 144 [2023-11-24 21:28:01,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 111 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2023-11-24 21:28:01,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:01,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 144 [2023-11-24 21:28:01,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:01,717 INFO L124 PetriNetUnfolderBase]: 891/2252 cut-off events. [2023-11-24 21:28:01,717 INFO L125 PetriNetUnfolderBase]: For 113/115 co-relation queries the response was YES. [2023-11-24 21:28:01,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3956 conditions, 2252 events. 891/2252 cut-off events. For 113/115 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 16327 event pairs, 677 based on Foata normal form. 0/1930 useless extension candidates. Maximal degree in co-relation 3263. Up to 1245 conditions per place. [2023-11-24 21:28:01,733 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 59 selfloop transitions, 3 changer transitions 0/125 dead transitions. [2023-11-24 21:28:01,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 125 transitions, 413 flow [2023-11-24 21:28:01,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:28:01,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:28:01,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2023-11-24 21:28:01,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6371527777777778 [2023-11-24 21:28:01,736 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2023-11-24 21:28:01,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2023-11-24 21:28:01,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:01,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2023-11-24 21:28:01,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 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) [2023-11-24 21:28:01,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-24 21:28:01,739 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-24 21:28:01,740 INFO L175 Difference]: Start difference. First operand has 114 places, 111 transitions, 261 flow. Second operand 4 states and 367 transitions. [2023-11-24 21:28:01,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 125 transitions, 413 flow [2023-11-24 21:28:01,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 125 transitions, 410 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:28:01,744 INFO L231 Difference]: Finished difference. Result has 114 places, 109 transitions, 260 flow [2023-11-24 21:28:01,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=260, PETRI_PLACES=114, PETRI_TRANSITIONS=109} [2023-11-24 21:28:01,745 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -20 predicate places. [2023-11-24 21:28:01,745 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 109 transitions, 260 flow [2023-11-24 21:28:01,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2023-11-24 21:28:01,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:01,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:01,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:01,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:28:01,961 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:28:01,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:01,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1739858063, now seen corresponding path program 1 times [2023-11-24 21:28:01,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:01,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523340262] [2023-11-24 21:28:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:01,963 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 [2023-11-24 21:28:01,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:01,964 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:28:01,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-24 21:28:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:02,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:28:02,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:02,158 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 [2023-11-24 21:28:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:02,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:02,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:02,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523340262] [2023-11-24 21:28:02,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523340262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:02,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:02,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:28:02,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372030822] [2023-11-24 21:28:02,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:02,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:28:02,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:02,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:28:02,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:28:02,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 144 [2023-11-24 21:28:02,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 109 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2023-11-24 21:28:02,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:02,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 144 [2023-11-24 21:28:02,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:02,906 INFO L124 PetriNetUnfolderBase]: 962/2343 cut-off events. [2023-11-24 21:28:02,906 INFO L125 PetriNetUnfolderBase]: For 202/204 co-relation queries the response was YES. [2023-11-24 21:28:02,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4169 conditions, 2343 events. 962/2343 cut-off events. For 202/204 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16680 event pairs, 744 based on Foata normal form. 0/2084 useless extension candidates. Maximal degree in co-relation 3477. Up to 1370 conditions per place. [2023-11-24 21:28:02,921 INFO L140 encePairwiseOnDemand]: 135/144 looper letters, 52 selfloop transitions, 5 changer transitions 0/114 dead transitions. [2023-11-24 21:28:02,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 114 transitions, 384 flow [2023-11-24 21:28:02,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:28:02,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:28:02,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-11-24 21:28:02,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2023-11-24 21:28:02,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-11-24 21:28:02,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-11-24 21:28:02,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:02,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-11-24 21:28:02,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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) [2023-11-24 21:28:02,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-24 21:28:02,926 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-24 21:28:02,927 INFO L175 Difference]: Start difference. First operand has 114 places, 109 transitions, 260 flow. Second operand 3 states and 282 transitions. [2023-11-24 21:28:02,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 114 transitions, 384 flow [2023-11-24 21:28:02,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 114 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:28:02,931 INFO L231 Difference]: Finished difference. Result has 109 places, 104 transitions, 256 flow [2023-11-24 21:28:02,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=109, PETRI_TRANSITIONS=104} [2023-11-24 21:28:02,935 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -25 predicate places. [2023-11-24 21:28:02,935 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 104 transitions, 256 flow [2023-11-24 21:28:02,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2023-11-24 21:28:02,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:02,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:02,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:03,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:28:03,143 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:28:03,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:03,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1739858064, now seen corresponding path program 1 times [2023-11-24 21:28:03,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:03,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596793938] [2023-11-24 21:28:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:03,144 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 [2023-11-24 21:28:03,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:03,148 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:28:03,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-24 21:28:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:03,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:28:03,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:03,333 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 5 [2023-11-24 21:28:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:03,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:03,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:03,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596793938] [2023-11-24 21:28:03,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596793938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:03,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:03,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:28:03,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035563021] [2023-11-24 21:28:03,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:03,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:28:03,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:03,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:28:03,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:28:03,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 144 [2023-11-24 21:28:03,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 104 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2023-11-24 21:28:03,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:03,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 144 [2023-11-24 21:28:03,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:04,203 INFO L124 PetriNetUnfolderBase]: 818/2014 cut-off events. [2023-11-24 21:28:04,204 INFO L125 PetriNetUnfolderBase]: For 208/210 co-relation queries the response was YES. [2023-11-24 21:28:04,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3646 conditions, 2014 events. 818/2014 cut-off events. For 208/210 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 14046 event pairs, 533 based on Foata normal form. 88/1891 useless extension candidates. Maximal degree in co-relation 2905. Up to 992 conditions per place. [2023-11-24 21:28:04,216 INFO L140 encePairwiseOnDemand]: 137/144 looper letters, 63 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2023-11-24 21:28:04,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 120 transitions, 420 flow [2023-11-24 21:28:04,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:28:04,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:28:04,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-11-24 21:28:04,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2023-11-24 21:28:04,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-11-24 21:28:04,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-11-24 21:28:04,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:04,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-11-24 21:28:04,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2023-11-24 21:28:04,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-24 21:28:04,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-24 21:28:04,222 INFO L175 Difference]: Start difference. First operand has 109 places, 104 transitions, 256 flow. Second operand 3 states and 297 transitions. [2023-11-24 21:28:04,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 120 transitions, 420 flow [2023-11-24 21:28:04,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 120 transitions, 410 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:28:04,227 INFO L231 Difference]: Finished difference. Result has 110 places, 104 transitions, 263 flow [2023-11-24 21:28:04,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=110, PETRI_TRANSITIONS=104} [2023-11-24 21:28:04,228 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -24 predicate places. [2023-11-24 21:28:04,229 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 104 transitions, 263 flow [2023-11-24 21:28:04,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2023-11-24 21:28:04,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:04,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:04,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:04,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:28:04,434 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:28:04,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:04,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1741536648, now seen corresponding path program 1 times [2023-11-24 21:28:04,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:04,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573941627] [2023-11-24 21:28:04,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:04,435 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 [2023-11-24 21:28:04,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:04,436 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:28:04,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-24 21:28:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:04,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:28:04,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:04,739 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-24 21:28:04,739 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 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-24 21:28:04,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:04,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:04,832 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:04,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573941627] [2023-11-24 21:28:04,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573941627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:04,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:04,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:28:04,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834831699] [2023-11-24 21:28:04,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:04,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:28:04,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:04,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:28:04,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:28:05,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 144 [2023-11-24 21:28:05,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 104 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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) [2023-11-24 21:28:05,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:05,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 144 [2023-11-24 21:28:05,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:05,543 INFO L124 PetriNetUnfolderBase]: 820/2011 cut-off events. [2023-11-24 21:28:05,543 INFO L125 PetriNetUnfolderBase]: For 237/239 co-relation queries the response was YES. [2023-11-24 21:28:05,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3777 conditions, 2011 events. 820/2011 cut-off events. For 237/239 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 13910 event pairs, 610 based on Foata normal form. 13/1804 useless extension candidates. Maximal degree in co-relation 2996. Up to 1131 conditions per place. [2023-11-24 21:28:05,555 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 57 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2023-11-24 21:28:05,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 118 transitions, 411 flow [2023-11-24 21:28:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:28:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:28:05,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-11-24 21:28:05,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6967592592592593 [2023-11-24 21:28:05,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-11-24 21:28:05,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-11-24 21:28:05,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:05,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-11-24 21:28:05,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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) [2023-11-24 21:28:05,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-24 21:28:05,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2023-11-24 21:28:05,561 INFO L175 Difference]: Start difference. First operand has 110 places, 104 transitions, 263 flow. Second operand 3 states and 301 transitions. [2023-11-24 21:28:05,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 118 transitions, 411 flow [2023-11-24 21:28:05,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 118 transitions, 405 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:28:05,572 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 259 flow [2023-11-24 21:28:05,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2023-11-24 21:28:05,574 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -26 predicate places. [2023-11-24 21:28:05,574 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 259 flow [2023-11-24 21:28:05,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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) [2023-11-24 21:28:05,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:05,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:05,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:05,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:28:05,781 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:28:05,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:05,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1741536649, now seen corresponding path program 1 times [2023-11-24 21:28:05,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:05,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361572687] [2023-11-24 21:28:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:05,783 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 [2023-11-24 21:28:05,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:05,784 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:28:05,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-24 21:28:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:06,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:28:06,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:06,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:28:06,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-24 21:28:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:06,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:06,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:06,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361572687] [2023-11-24 21:28:06,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361572687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:06,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:06,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:28:06,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353270326] [2023-11-24 21:28:06,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:06,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:28:06,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:06,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:28:06,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:28:06,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 144 [2023-11-24 21:28:06,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 259 flow. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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) [2023-11-24 21:28:06,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:06,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 144 [2023-11-24 21:28:06,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:07,121 INFO L124 PetriNetUnfolderBase]: 830/2018 cut-off events. [2023-11-24 21:28:07,121 INFO L125 PetriNetUnfolderBase]: For 235/238 co-relation queries the response was YES. [2023-11-24 21:28:07,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3764 conditions, 2018 events. 830/2018 cut-off events. For 235/238 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 13906 event pairs, 620 based on Foata normal form. 0/1806 useless extension candidates. Maximal degree in co-relation 2982. Up to 1154 conditions per place. [2023-11-24 21:28:07,133 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 59 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2023-11-24 21:28:07,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 116 transitions, 411 flow [2023-11-24 21:28:07,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:28:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:28:07,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2023-11-24 21:28:07,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6371527777777778 [2023-11-24 21:28:07,136 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2023-11-24 21:28:07,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2023-11-24 21:28:07,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:07,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2023-11-24 21:28:07,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 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) [2023-11-24 21:28:07,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-24 21:28:07,139 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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) [2023-11-24 21:28:07,140 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 259 flow. Second operand 4 states and 367 transitions. [2023-11-24 21:28:07,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 116 transitions, 411 flow [2023-11-24 21:28:07,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 116 transitions, 405 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:28:07,144 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 255 flow [2023-11-24 21:28:07,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2023-11-24 21:28:07,144 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -27 predicate places. [2023-11-24 21:28:07,145 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 255 flow [2023-11-24 21:28:07,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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) [2023-11-24 21:28:07,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:07,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:07,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-24 21:28:07,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:28:07,351 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:28:07,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:07,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1416577788, now seen corresponding path program 1 times [2023-11-24 21:28:07,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:07,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697597007] [2023-11-24 21:28:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:07,352 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 [2023-11-24 21:28:07,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:07,353 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:28:07,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-24 21:28:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:07,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-24 21:28:07,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:07,572 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 5 [2023-11-24 21:28:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:07,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:07,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:07,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697597007] [2023-11-24 21:28:07,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697597007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:07,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:07,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:28:07,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891335677] [2023-11-24 21:28:07,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:07,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:28:07,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:07,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:28:07,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:08,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 144 [2023-11-24 21:28:08,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 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) [2023-11-24 21:28:08,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:08,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 144 [2023-11-24 21:28:08,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:09,513 INFO L124 PetriNetUnfolderBase]: 832/2115 cut-off events. [2023-11-24 21:28:09,514 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2023-11-24 21:28:09,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3889 conditions, 2115 events. 832/2115 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 14999 event pairs, 174 based on Foata normal form. 144/2166 useless extension candidates. Maximal degree in co-relation 3079. Up to 942 conditions per place. [2023-11-24 21:28:09,527 INFO L140 encePairwiseOnDemand]: 136/144 looper letters, 88 selfloop transitions, 11 changer transitions 2/154 dead transitions. [2023-11-24 21:28:09,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 154 transitions, 590 flow [2023-11-24 21:28:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:28:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:28:09,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 657 transitions. [2023-11-24 21:28:09,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6517857142857143 [2023-11-24 21:28:09,531 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 657 transitions. [2023-11-24 21:28:09,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 657 transitions. [2023-11-24 21:28:09,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:09,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 657 transitions. [2023-11-24 21:28:09,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.85714285714286) internal successors, (657), 7 states have internal predecessors, (657), 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) [2023-11-24 21:28:09,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 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) [2023-11-24 21:28:09,539 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 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) [2023-11-24 21:28:09,539 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 255 flow. Second operand 7 states and 657 transitions. [2023-11-24 21:28:09,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 154 transitions, 590 flow [2023-11-24 21:28:09,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 154 transitions, 584 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:28:09,550 INFO L231 Difference]: Finished difference. Result has 113 places, 106 transitions, 316 flow [2023-11-24 21:28:09,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=316, PETRI_PLACES=113, PETRI_TRANSITIONS=106} [2023-11-24 21:28:09,551 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -21 predicate places. [2023-11-24 21:28:09,551 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 106 transitions, 316 flow [2023-11-24 21:28:09,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 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) [2023-11-24 21:28:09,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:09,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:09,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-24 21:28:09,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:28:09,757 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:28:09,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:09,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1416577789, now seen corresponding path program 1 times [2023-11-24 21:28:09,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:09,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584234071] [2023-11-24 21:28:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:09,758 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 [2023-11-24 21:28:09,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:09,759 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:28:09,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-24 21:28:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:09,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:28:09,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:09,972 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 [2023-11-24 21:28:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:10,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:10,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:10,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584234071] [2023-11-24 21:28:10,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584234071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:10,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:10,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:28:10,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994478842] [2023-11-24 21:28:10,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:10,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:28:10,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:10,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:28:10,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:10,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 144 [2023-11-24 21:28:10,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 106 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 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) [2023-11-24 21:28:10,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:10,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 144 [2023-11-24 21:28:10,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:11,425 INFO L124 PetriNetUnfolderBase]: 1177/2709 cut-off events. [2023-11-24 21:28:11,425 INFO L125 PetriNetUnfolderBase]: For 725/728 co-relation queries the response was YES. [2023-11-24 21:28:11,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5439 conditions, 2709 events. 1177/2709 cut-off events. For 725/728 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 19302 event pairs, 139 based on Foata normal form. 64/2654 useless extension candidates. Maximal degree in co-relation 3344. Up to 1078 conditions per place. [2023-11-24 21:28:11,441 INFO L140 encePairwiseOnDemand]: 132/144 looper letters, 100 selfloop transitions, 16 changer transitions 0/166 dead transitions. [2023-11-24 21:28:11,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 166 transitions, 686 flow [2023-11-24 21:28:11,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:28:11,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:28:11,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 735 transitions. [2023-11-24 21:28:11,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6380208333333334 [2023-11-24 21:28:11,445 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 735 transitions. [2023-11-24 21:28:11,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 735 transitions. [2023-11-24 21:28:11,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:11,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 735 transitions. [2023-11-24 21:28:11,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 91.875) internal successors, (735), 8 states have internal predecessors, (735), 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) [2023-11-24 21:28:11,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 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) [2023-11-24 21:28:11,452 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 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) [2023-11-24 21:28:11,452 INFO L175 Difference]: Start difference. First operand has 113 places, 106 transitions, 316 flow. Second operand 8 states and 735 transitions. [2023-11-24 21:28:11,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 166 transitions, 686 flow [2023-11-24 21:28:11,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 166 transitions, 686 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 21:28:11,460 INFO L231 Difference]: Finished difference. Result has 125 places, 112 transitions, 426 flow [2023-11-24 21:28:11,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=426, PETRI_PLACES=125, PETRI_TRANSITIONS=112} [2023-11-24 21:28:11,461 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -9 predicate places. [2023-11-24 21:28:11,461 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 112 transitions, 426 flow [2023-11-24 21:28:11,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 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) [2023-11-24 21:28:11,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:11,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:11,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:11,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:28:11,667 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:28:11,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:11,667 INFO L85 PathProgramCache]: Analyzing trace with hash -177135409, now seen corresponding path program 1 times [2023-11-24 21:28:11,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:11,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092311667] [2023-11-24 21:28:11,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:11,668 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 [2023-11-24 21:28:11,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:11,670 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:28:11,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-24 21:28:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:11,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 21:28:12,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:12,009 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:28:12,009 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:28:12,010 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:28:12,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 41 [2023-11-24 21:28:12,075 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:28:12,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 21:28:12,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 73 [2023-11-24 21:28:12,203 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 21:28:12,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 141 treesize of output 57 [2023-11-24 21:28:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:12,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:12,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:12,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092311667] [2023-11-24 21:28:12,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092311667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:12,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:12,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:28:12,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897045366] [2023-11-24 21:28:12,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:12,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:28:12,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:12,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:28:12,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:13,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 144 [2023-11-24 21:28:13,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 112 transitions, 426 flow. Second operand has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 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) [2023-11-24 21:28:13,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:13,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 144 [2023-11-24 21:28:13,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:16,427 INFO L124 PetriNetUnfolderBase]: 1692/3700 cut-off events. [2023-11-24 21:28:16,427 INFO L125 PetriNetUnfolderBase]: For 3206/3348 co-relation queries the response was YES. [2023-11-24 21:28:16,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8545 conditions, 3700 events. 1692/3700 cut-off events. For 3206/3348 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 27875 event pairs, 756 based on Foata normal form. 99/3563 useless extension candidates. Maximal degree in co-relation 8038. Up to 2042 conditions per place. [2023-11-24 21:28:16,447 INFO L140 encePairwiseOnDemand]: 134/144 looper letters, 98 selfloop transitions, 21 changer transitions 0/168 dead transitions. [2023-11-24 21:28:16,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 168 transitions, 854 flow [2023-11-24 21:28:16,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:28:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:28:16,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 561 transitions. [2023-11-24 21:28:16,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6493055555555556 [2023-11-24 21:28:16,451 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 561 transitions. [2023-11-24 21:28:16,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 561 transitions. [2023-11-24 21:28:16,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:16,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 561 transitions. [2023-11-24 21:28:16,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 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) [2023-11-24 21:28:16,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 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) [2023-11-24 21:28:16,457 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 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) [2023-11-24 21:28:16,457 INFO L175 Difference]: Start difference. First operand has 125 places, 112 transitions, 426 flow. Second operand 6 states and 561 transitions. [2023-11-24 21:28:16,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 168 transitions, 854 flow [2023-11-24 21:28:16,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 168 transitions, 835 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:28:16,469 INFO L231 Difference]: Finished difference. Result has 130 places, 134 transitions, 605 flow [2023-11-24 21:28:16,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=605, PETRI_PLACES=130, PETRI_TRANSITIONS=134} [2023-11-24 21:28:16,470 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -4 predicate places. [2023-11-24 21:28:16,470 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 134 transitions, 605 flow [2023-11-24 21:28:16,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 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) [2023-11-24 21:28:16,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:16,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:16,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-24 21:28:16,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:28:16,677 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:28:16,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:16,678 INFO L85 PathProgramCache]: Analyzing trace with hash -37315768, now seen corresponding path program 1 times [2023-11-24 21:28:16,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:16,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82959373] [2023-11-24 21:28:16,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:16,679 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 [2023-11-24 21:28:16,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:16,680 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:28:16,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-24 21:28:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:16,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-24 21:28:16,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:16,918 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 5 [2023-11-24 21:28:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:17,053 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:17,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:17,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82959373] [2023-11-24 21:28:17,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82959373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:17,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:17,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:28:17,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523721606] [2023-11-24 21:28:17,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:17,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:28:17,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:17,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:28:17,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:17,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 144 [2023-11-24 21:28:17,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 134 transitions, 605 flow. Second operand has 5 states, 5 states have (on average 81.6) internal successors, (408), 5 states have internal predecessors, (408), 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) [2023-11-24 21:28:17,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:17,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 144 [2023-11-24 21:28:17,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:18,684 INFO L124 PetriNetUnfolderBase]: 1362/3243 cut-off events. [2023-11-24 21:28:18,685 INFO L125 PetriNetUnfolderBase]: For 3252/3406 co-relation queries the response was YES. [2023-11-24 21:28:18,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8521 conditions, 3243 events. 1362/3243 cut-off events. For 3252/3406 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 24844 event pairs, 200 based on Foata normal form. 363/3504 useless extension candidates. Maximal degree in co-relation 8123. Up to 1634 conditions per place. [2023-11-24 21:28:18,701 INFO L140 encePairwiseOnDemand]: 136/144 looper letters, 117 selfloop transitions, 16 changer transitions 1/198 dead transitions. [2023-11-24 21:28:18,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 198 transitions, 1162 flow [2023-11-24 21:28:18,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:28:18,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:28:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 658 transitions. [2023-11-24 21:28:18,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2023-11-24 21:28:18,705 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 658 transitions. [2023-11-24 21:28:18,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 658 transitions. [2023-11-24 21:28:18,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:18,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 658 transitions. [2023-11-24 21:28:18,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 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) [2023-11-24 21:28:18,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 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) [2023-11-24 21:28:18,710 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 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) [2023-11-24 21:28:18,711 INFO L175 Difference]: Start difference. First operand has 130 places, 134 transitions, 605 flow. Second operand 7 states and 658 transitions. [2023-11-24 21:28:18,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 198 transitions, 1162 flow [2023-11-24 21:28:18,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 198 transitions, 1146 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-11-24 21:28:18,729 INFO L231 Difference]: Finished difference. Result has 138 places, 141 transitions, 696 flow [2023-11-24 21:28:18,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=696, PETRI_PLACES=138, PETRI_TRANSITIONS=141} [2023-11-24 21:28:18,730 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 4 predicate places. [2023-11-24 21:28:18,730 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 141 transitions, 696 flow [2023-11-24 21:28:18,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.6) internal successors, (408), 5 states have internal predecessors, (408), 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) [2023-11-24 21:28:18,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:18,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:18,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:18,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:28:18,936 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:28:18,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:18,937 INFO L85 PathProgramCache]: Analyzing trace with hash -37315769, now seen corresponding path program 1 times [2023-11-24 21:28:18,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:18,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675176073] [2023-11-24 21:28:18,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:18,938 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 [2023-11-24 21:28:18,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:18,939 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:28:18,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 (17)] Waiting until timeout for monitored process [2023-11-24 21:28:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:19,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:28:19,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:19,204 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 [2023-11-24 21:28:19,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:19,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:19,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:19,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675176073] [2023-11-24 21:28:19,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675176073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:19,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:19,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:28:19,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879393274] [2023-11-24 21:28:19,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:19,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:28:19,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:19,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:28:19,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:19,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 144 [2023-11-24 21:28:19,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 141 transitions, 696 flow. Second operand has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 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) [2023-11-24 21:28:19,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:19,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 144 [2023-11-24 21:28:19,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:21,017 INFO L124 PetriNetUnfolderBase]: 1884/4008 cut-off events. [2023-11-24 21:28:21,017 INFO L125 PetriNetUnfolderBase]: For 4930/5162 co-relation queries the response was YES. [2023-11-24 21:28:21,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11122 conditions, 4008 events. 1884/4008 cut-off events. For 4930/5162 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 29670 event pairs, 391 based on Foata normal form. 269/4210 useless extension candidates. Maximal degree in co-relation 10239. Up to 1812 conditions per place. [2023-11-24 21:28:21,042 INFO L140 encePairwiseOnDemand]: 132/144 looper letters, 132 selfloop transitions, 24 changer transitions 0/213 dead transitions. [2023-11-24 21:28:21,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 213 transitions, 1301 flow [2023-11-24 21:28:21,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:28:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:28:21,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 739 transitions. [2023-11-24 21:28:21,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6414930555555556 [2023-11-24 21:28:21,047 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 739 transitions. [2023-11-24 21:28:21,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 739 transitions. [2023-11-24 21:28:21,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:21,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 739 transitions. [2023-11-24 21:28:21,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.375) internal successors, (739), 8 states have internal predecessors, (739), 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) [2023-11-24 21:28:21,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 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) [2023-11-24 21:28:21,055 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 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) [2023-11-24 21:28:21,055 INFO L175 Difference]: Start difference. First operand has 138 places, 141 transitions, 696 flow. Second operand 8 states and 739 transitions. [2023-11-24 21:28:21,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 213 transitions, 1301 flow [2023-11-24 21:28:21,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 213 transitions, 1298 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:28:21,079 INFO L231 Difference]: Finished difference. Result has 149 places, 148 transitions, 863 flow [2023-11-24 21:28:21,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=863, PETRI_PLACES=149, PETRI_TRANSITIONS=148} [2023-11-24 21:28:21,080 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 15 predicate places. [2023-11-24 21:28:21,080 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 148 transitions, 863 flow [2023-11-24 21:28:21,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 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) [2023-11-24 21:28:21,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:21,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:21,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 (17)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:21,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:28:21,287 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:28:21,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:21,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1417787360, now seen corresponding path program 1 times [2023-11-24 21:28:21,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:21,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222100624] [2023-11-24 21:28:21,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:21,288 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 [2023-11-24 21:28:21,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:21,289 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:28:21,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-24 21:28:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:21,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:28:21,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:21,621 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:28:21,622 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:28:21,622 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:28:21,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 41 [2023-11-24 21:28:21,769 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 21:28:21,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 121 treesize of output 49 [2023-11-24 21:28:21,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:21,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:21,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:21,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222100624] [2023-11-24 21:28:21,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222100624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:21,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:21,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:28:21,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901690646] [2023-11-24 21:28:21,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:21,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:28:21,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:21,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:28:21,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:28:22,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 144 [2023-11-24 21:28:22,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 148 transitions, 863 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2023-11-24 21:28:22,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:22,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 144 [2023-11-24 21:28:22,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:24,298 INFO L124 PetriNetUnfolderBase]: 2123/4398 cut-off events. [2023-11-24 21:28:24,299 INFO L125 PetriNetUnfolderBase]: For 11089/11441 co-relation queries the response was YES. [2023-11-24 21:28:24,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14420 conditions, 4398 events. 2123/4398 cut-off events. For 11089/11441 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 32780 event pairs, 803 based on Foata normal form. 180/4514 useless extension candidates. Maximal degree in co-relation 13480. Up to 2494 conditions per place. [2023-11-24 21:28:24,329 INFO L140 encePairwiseOnDemand]: 136/144 looper letters, 112 selfloop transitions, 35 changer transitions 0/198 dead transitions. [2023-11-24 21:28:24,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 198 transitions, 1470 flow [2023-11-24 21:28:24,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:28:24,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:28:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 476 transitions. [2023-11-24 21:28:24,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6611111111111111 [2023-11-24 21:28:24,333 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 476 transitions. [2023-11-24 21:28:24,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 476 transitions. [2023-11-24 21:28:24,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:24,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 476 transitions. [2023-11-24 21:28:24,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.2) internal successors, (476), 5 states have internal predecessors, (476), 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) [2023-11-24 21:28:24,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 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) [2023-11-24 21:28:24,339 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 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) [2023-11-24 21:28:24,339 INFO L175 Difference]: Start difference. First operand has 149 places, 148 transitions, 863 flow. Second operand 5 states and 476 transitions. [2023-11-24 21:28:24,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 198 transitions, 1470 flow [2023-11-24 21:28:24,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 198 transitions, 1449 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:28:24,379 INFO L231 Difference]: Finished difference. Result has 152 places, 167 transitions, 1171 flow [2023-11-24 21:28:24,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1171, PETRI_PLACES=152, PETRI_TRANSITIONS=167} [2023-11-24 21:28:24,380 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 18 predicate places. [2023-11-24 21:28:24,380 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 167 transitions, 1171 flow [2023-11-24 21:28:24,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2023-11-24 21:28:24,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:24,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:24,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:24,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:28:24,589 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:28:24,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:24,589 INFO L85 PathProgramCache]: Analyzing trace with hash 597138916, now seen corresponding path program 1 times [2023-11-24 21:28:24,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:24,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097413220] [2023-11-24 21:28:24,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:24,591 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 [2023-11-24 21:28:24,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:24,593 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:28:24,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-24 21:28:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:24,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-24 21:28:24,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:24,969 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 [2023-11-24 21:28:24,978 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 5 [2023-11-24 21:28:25,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:28:25,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-24 21:28:25,293 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 21:28:25,294 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 13 treesize of output 13 [2023-11-24 21:28:25,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:25,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:25,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:25,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097413220] [2023-11-24 21:28:25,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097413220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:25,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:25,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:28:25,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486373286] [2023-11-24 21:28:25,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:25,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:28:25,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:25,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:28:25,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:28:27,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 144 [2023-11-24 21:28:27,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 167 transitions, 1171 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2023-11-24 21:28:27,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:27,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 144 [2023-11-24 21:28:27,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:28,828 INFO L124 PetriNetUnfolderBase]: 2452/5184 cut-off events. [2023-11-24 21:28:28,829 INFO L125 PetriNetUnfolderBase]: For 16003/16239 co-relation queries the response was YES. [2023-11-24 21:28:28,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18421 conditions, 5184 events. 2452/5184 cut-off events. For 16003/16239 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 40450 event pairs, 569 based on Foata normal form. 66/5183 useless extension candidates. Maximal degree in co-relation 16767. Up to 2201 conditions per place. [2023-11-24 21:28:28,863 INFO L140 encePairwiseOnDemand]: 132/144 looper letters, 158 selfloop transitions, 30 changer transitions 0/245 dead transitions. [2023-11-24 21:28:28,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 245 transitions, 1917 flow [2023-11-24 21:28:28,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:28:28,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:28:28,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 796 transitions. [2023-11-24 21:28:28,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6141975308641975 [2023-11-24 21:28:28,869 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 796 transitions. [2023-11-24 21:28:28,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 796 transitions. [2023-11-24 21:28:28,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:28,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 796 transitions. [2023-11-24 21:28:28,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.44444444444444) internal successors, (796), 9 states have internal predecessors, (796), 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) [2023-11-24 21:28:28,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 144.0) internal successors, (1440), 10 states have internal predecessors, (1440), 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) [2023-11-24 21:28:28,879 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 144.0) internal successors, (1440), 10 states have internal predecessors, (1440), 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) [2023-11-24 21:28:28,879 INFO L175 Difference]: Start difference. First operand has 152 places, 167 transitions, 1171 flow. Second operand 9 states and 796 transitions. [2023-11-24 21:28:28,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 245 transitions, 1917 flow [2023-11-24 21:28:28,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 245 transitions, 1890 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-24 21:28:28,966 INFO L231 Difference]: Finished difference. Result has 156 places, 165 transitions, 1208 flow [2023-11-24 21:28:28,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1208, PETRI_PLACES=156, PETRI_TRANSITIONS=165} [2023-11-24 21:28:28,967 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 22 predicate places. [2023-11-24 21:28:28,967 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 165 transitions, 1208 flow [2023-11-24 21:28:28,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2023-11-24 21:28:28,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:28,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:28,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:29,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:28:29,177 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-24 21:28:29,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:29,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1283213392, now seen corresponding path program 1 times [2023-11-24 21:28:29,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:28:29,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209349649] [2023-11-24 21:28:29,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:29,178 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 [2023-11-24 21:28:29,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:28:29,180 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:28:29,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df70b2f-e573-4e97-8a35-542e3f8328df/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-24 21:28:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:29,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-24 21:28:29,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:29,605 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 5 [2023-11-24 21:28:29,612 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 [2023-11-24 21:28:29,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:28:29,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-24 21:28:29,926 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 21:28:29,926 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 13 treesize of output 13 [2023-11-24 21:28:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:29,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:29,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:28:29,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209349649] [2023-11-24 21:28:29,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209349649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:29,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:29,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:28:29,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775165932] [2023-11-24 21:28:29,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:29,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:28:29,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:28:29,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:28:29,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30