./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-memsafety/list1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/list1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya --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 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:38:28,860 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:38:28,920 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 04:38:28,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:38:28,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:38:28,947 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:38:28,947 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:38:28,948 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:38:28,949 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:38:28,949 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:38:28,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:38:28,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:38:28,951 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:38:28,952 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:38:28,952 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:38:28,953 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:38:28,953 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:38:28,954 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:38:28,954 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:38:28,955 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:38:28,955 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:38:28,956 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:38:28,956 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:38:28,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:38:28,957 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:38:28,958 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:38:28,958 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:38:28,958 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:38:28,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:38:28,959 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:38:28,959 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:38:28,960 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:38:28,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:38:28,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:38:28,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:38:28,961 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:38:28,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:38:28,961 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:38:28,961 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:38:28,961 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:38:28,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:38:28,962 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_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2023-11-29 04:38:29,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:38:29,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:38:29,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:38:29,207 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:38:29,207 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:38:29,209 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-memsafety/list1.i [2023-11-29 04:38:31,963 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:38:32,207 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:38:32,208 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/sv-benchmarks/c/pthread-memsafety/list1.i [2023-11-29 04:38:32,226 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/data/b38068132/23507cbcbdea421899c962f7687aa00e/FLAG6ffd65f36 [2023-11-29 04:38:32,242 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/data/b38068132/23507cbcbdea421899c962f7687aa00e [2023-11-29 04:38:32,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:38:32,246 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:38:32,248 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:38:32,248 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:38:32,254 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:38:32,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:38:32" (1/1) ... [2023-11-29 04:38:32,256 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69bc653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:32, skipping insertion in model container [2023-11-29 04:38:32,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:38:32" (1/1) ... [2023-11-29 04:38:32,312 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:38:32,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:38:32,819 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) [2023-11-29 04:38:32,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7c821523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:32, skipping insertion in model container [2023-11-29 04:38:32,820 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:38:32,821 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 04:38:32,823 INFO L158 Benchmark]: Toolchain (without parser) took 575.62ms. Allocated memory is still 163.6MB. Free memory was 121.7MB in the beginning and 107.6MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 04:38:32,823 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 163.6MB. Free memory is still 133.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:38:32,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 572.95ms. Allocated memory is still 163.6MB. Free memory was 121.1MB in the beginning and 107.6MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 04:38:32,825 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 163.6MB. Free memory is still 133.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 572.95ms. Allocated memory is still 163.6MB. Free memory was 121.1MB in the beginning and 107.6MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1048]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/list1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya --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 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:38:34,576 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:38:34,644 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 04:38:34,650 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:38:34,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:38:34,689 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:38:34,690 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:38:34,690 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:38:34,691 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:38:34,691 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:38:34,692 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:38:34,692 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:38:34,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:38:34,694 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:38:34,694 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:38:34,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:38:34,695 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:38:34,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:38:34,697 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:38:34,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:38:34,698 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:38:34,698 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:38:34,699 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:38:34,699 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:38:34,700 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:38:34,700 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 04:38:34,701 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 04:38:34,701 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:38:34,701 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:38:34,702 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:38:34,702 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:38:34,703 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:38:34,703 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:38:34,703 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:38:34,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:38:34,704 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:38:34,704 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:38:34,704 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 04:38:34,704 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 04:38:34,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:38:34,705 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:38:34,705 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:38:34,705 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:38:34,706 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 04:38:34,706 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_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2023-11-29 04:38:34,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:38:34,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:38:34,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:38:35,000 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:38:35,000 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:38:35,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-memsafety/list1.i [2023-11-29 04:38:37,842 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:38:38,088 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:38:38,089 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/sv-benchmarks/c/pthread-memsafety/list1.i [2023-11-29 04:38:38,107 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/data/07d1784f6/15e35919d2d54760999af69a7342afb2/FLAG19dfa2c88 [2023-11-29 04:38:38,143 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/data/07d1784f6/15e35919d2d54760999af69a7342afb2 [2023-11-29 04:38:38,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:38:38,148 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:38:38,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:38:38,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:38:38,155 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:38:38,156 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:38:38" (1/1) ... [2023-11-29 04:38:38,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb57c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:38, skipping insertion in model container [2023-11-29 04:38:38,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:38:38" (1/1) ... [2023-11-29 04:38:38,213 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:38:38,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:38:38,737 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 04:38:38,747 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:38:38,779 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:38:38,785 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:38:38,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:38:38,899 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:38:38,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:38 WrapperNode [2023-11-29 04:38:38,900 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:38:38,901 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:38:38,901 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:38:38,901 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:38:38,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:38" (1/1) ... [2023-11-29 04:38:38,930 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:38" (1/1) ... [2023-11-29 04:38:38,957 INFO L138 Inliner]: procedures = 267, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2023-11-29 04:38:38,958 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:38:38,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:38:38,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:38:38,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:38:38,971 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:38" (1/1) ... [2023-11-29 04:38:38,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:38" (1/1) ... [2023-11-29 04:38:38,976 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:38" (1/1) ... [2023-11-29 04:38:38,998 INFO L175 MemorySlicer]: Split 15 memory accesses to 4 slices as follows [8, 3, 2, 2]. 53 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [0, 1, 0, 0]. The 5 writes are split as follows [2, 1, 1, 1]. [2023-11-29 04:38:38,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:38" (1/1) ... [2023-11-29 04:38:38,999 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:38" (1/1) ... [2023-11-29 04:38:39,014 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:38" (1/1) ... [2023-11-29 04:38:39,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:38" (1/1) ... [2023-11-29 04:38:39,021 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:38" (1/1) ... [2023-11-29 04:38:39,024 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:38" (1/1) ... [2023-11-29 04:38:39,029 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:38:39,030 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:38:39,031 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:38:39,031 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:38:39,032 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:38" (1/1) ... [2023-11-29 04:38:39,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:38:39,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:39,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:38:39,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:38:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 04:38:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 04:38:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 04:38:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 04:38:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:38:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 04:38:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 04:38:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 04:38:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 04:38:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 04:38:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 04:38:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 04:38:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 04:38:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:38:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 04:38:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 04:38:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 04:38:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-29 04:38:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:38:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 04:38:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 04:38:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 04:38:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 04:38:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure delete [2023-11-29 04:38:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure delete [2023-11-29 04:38:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure build [2023-11-29 04:38:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure build [2023-11-29 04:38:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:38:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:38:39,116 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:38:39,291 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:38:39,293 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:38:39,749 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:38:39,886 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:38:39,886 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 04:38:39,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:38:39 BoogieIcfgContainer [2023-11-29 04:38:39,887 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:38:39,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:38:39,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:38:39,893 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:38:39,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:38:38" (1/3) ... [2023-11-29 04:38:39,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1065c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:38:39, skipping insertion in model container [2023-11-29 04:38:39,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:38" (2/3) ... [2023-11-29 04:38:39,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1065c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:38:39, skipping insertion in model container [2023-11-29 04:38:39,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:38:39" (3/3) ... [2023-11-29 04:38:39,897 INFO L112 eAbstractionObserver]: Analyzing ICFG list1.i [2023-11-29 04:38:39,920 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:38:39,920 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2023-11-29 04:38:39,920 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:38:40,013 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 04:38:40,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 86 transitions, 186 flow [2023-11-29 04:38:40,089 INFO L124 PetriNetUnfolderBase]: 5/84 cut-off events. [2023-11-29 04:38:40,089 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 04:38:40,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 5/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 245 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 48. Up to 3 conditions per place. [2023-11-29 04:38:40,093 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 86 transitions, 186 flow [2023-11-29 04:38:40,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 83 transitions, 178 flow [2023-11-29 04:38:40,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:38:40,115 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;@742b38c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:38:40,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2023-11-29 04:38:40,118 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:38:40,118 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 04:38:40,118 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:38:40,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:40,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 04:38:40,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-29 04:38:40,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash 9844, now seen corresponding path program 1 times [2023-11-29 04:38:40,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:38:40,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989443980] [2023-11-29 04:38:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:40,138 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 [2023-11-29 04:38:40,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:38:40,140 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:38:40,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:38:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:40,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:38:40,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:40,339 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-29 04:38:40,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-11-29 04:38:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:38:40,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:40,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:38:40,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989443980] [2023-11-29 04:38:40,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989443980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:40,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:40,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:38:40,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093542475] [2023-11-29 04:38:40,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:40,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:38:40,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:38:40,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:38:40,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:38:40,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 86 [2023-11-29 04:38:40,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 83 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2023-11-29 04:38:40,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:38:40,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 86 [2023-11-29 04:38:40,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:38:40,693 INFO L124 PetriNetUnfolderBase]: 35/201 cut-off events. [2023-11-29 04:38:40,693 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 04:38:40,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 201 events. 35/201 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 770 event pairs, 20 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 153. Up to 68 conditions per place. [2023-11-29 04:38:40,697 INFO L140 encePairwiseOnDemand]: 79/86 looper letters, 30 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-11-29 04:38:40,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 86 transitions, 255 flow [2023-11-29 04:38:40,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:38:40,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:38:40,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2023-11-29 04:38:40,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7713178294573644 [2023-11-29 04:38:40,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 199 transitions. [2023-11-29 04:38:40,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 199 transitions. [2023-11-29 04:38:40,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:38:40,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 199 transitions. [2023-11-29 04:38:40,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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) [2023-11-29 04:38:40,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2023-11-29 04:38:40,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2023-11-29 04:38:40,728 INFO L175 Difference]: Start difference. First operand has 85 places, 83 transitions, 178 flow. Second operand 3 states and 199 transitions. [2023-11-29 04:38:40,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 86 transitions, 255 flow [2023-11-29 04:38:40,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 86 transitions, 245 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 04:38:40,736 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 184 flow [2023-11-29 04:38:40,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2023-11-29 04:38:40,742 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -3 predicate places. [2023-11-29 04:38:40,742 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 184 flow [2023-11-29 04:38:40,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2023-11-29 04:38:40,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:40,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 04:38:40,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:38:40,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:38:40,945 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-29 04:38:40,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:40,946 INFO L85 PathProgramCache]: Analyzing trace with hash 9845, now seen corresponding path program 1 times [2023-11-29 04:38:40,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:38:40,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566128371] [2023-11-29 04:38:40,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:40,947 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 [2023-11-29 04:38:40,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:38:40,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:38:40,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:38:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:41,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:38:41,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:41,052 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-29 04:38:41,053 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 1 case distinctions, treesize of input 9 treesize of output 11 [2023-11-29 04:38:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:38:41,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:41,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:38:41,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566128371] [2023-11-29 04:38:41,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566128371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:41,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:41,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:38:41,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790589035] [2023-11-29 04:38:41,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:41,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:38:41,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:38:41,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:38:41,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:38:41,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 86 [2023-11-29 04:38:41,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2023-11-29 04:38:41,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:38:41,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 86 [2023-11-29 04:38:41,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:38:41,532 INFO L124 PetriNetUnfolderBase]: 35/201 cut-off events. [2023-11-29 04:38:41,533 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 04:38:41,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 201 events. 35/201 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 783 event pairs, 16 based on Foata normal form. 3/146 useless extension candidates. Maximal degree in co-relation 223. Up to 82 conditions per place. [2023-11-29 04:38:41,535 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 29 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-11-29 04:38:41,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 83 transitions, 248 flow [2023-11-29 04:38:41,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:38:41,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:38:41,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2023-11-29 04:38:41,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7713178294573644 [2023-11-29 04:38:41,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 199 transitions. [2023-11-29 04:38:41,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 199 transitions. [2023-11-29 04:38:41,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:38:41,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 199 transitions. [2023-11-29 04:38:41,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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) [2023-11-29 04:38:41,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2023-11-29 04:38:41,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2023-11-29 04:38:41,543 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 184 flow. Second operand 3 states and 199 transitions. [2023-11-29 04:38:41,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 83 transitions, 248 flow [2023-11-29 04:38:41,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 83 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:38:41,546 INFO L231 Difference]: Finished difference. Result has 83 places, 82 transitions, 190 flow [2023-11-29 04:38:41,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=83, PETRI_TRANSITIONS=82} [2023-11-29 04:38:41,547 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -2 predicate places. [2023-11-29 04:38:41,548 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 82 transitions, 190 flow [2023-11-29 04:38:41,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2023-11-29 04:38:41,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:41,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 04:38:41,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 04:38:41,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:38:41,749 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-29 04:38:41,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:41,750 INFO L85 PathProgramCache]: Analyzing trace with hash 512163318, now seen corresponding path program 1 times [2023-11-29 04:38:41,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:38:41,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369483884] [2023-11-29 04:38:41,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:41,751 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 [2023-11-29 04:38:41,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:38:41,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:38:41,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:38:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:41,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:38:41,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:41,877 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 [2023-11-29 04:38:41,906 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 04:38:41,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-29 04:38:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:38:41,926 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:41,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:38:41,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369483884] [2023-11-29 04:38:41,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369483884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:41,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:41,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:38:41,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760486053] [2023-11-29 04:38:41,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:41,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:38:41,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:38:41,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:38:41,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:38:42,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 86 [2023-11-29 04:38:42,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 82 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2023-11-29 04:38:42,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:38:42,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 86 [2023-11-29 04:38:42,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:38:42,489 INFO L124 PetriNetUnfolderBase]: 28/180 cut-off events. [2023-11-29 04:38:42,489 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 04:38:42,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 180 events. 28/180 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 670 event pairs, 4 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 197. Up to 32 conditions per place. [2023-11-29 04:38:42,492 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 29 selfloop transitions, 7 changer transitions 0/86 dead transitions. [2023-11-29 04:38:42,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 86 transitions, 271 flow [2023-11-29 04:38:42,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:38:42,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:38:42,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 257 transitions. [2023-11-29 04:38:42,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.747093023255814 [2023-11-29 04:38:42,495 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 257 transitions. [2023-11-29 04:38:42,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 257 transitions. [2023-11-29 04:38:42,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:38:42,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 257 transitions. [2023-11-29 04:38:42,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 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) [2023-11-29 04:38:42,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 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) [2023-11-29 04:38:42,499 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 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) [2023-11-29 04:38:42,499 INFO L175 Difference]: Start difference. First operand has 83 places, 82 transitions, 190 flow. Second operand 4 states and 257 transitions. [2023-11-29 04:38:42,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 86 transitions, 271 flow [2023-11-29 04:38:42,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 86 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:38:42,503 INFO L231 Difference]: Finished difference. Result has 83 places, 80 transitions, 198 flow [2023-11-29 04:38:42,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=83, PETRI_TRANSITIONS=80} [2023-11-29 04:38:42,504 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -2 predicate places. [2023-11-29 04:38:42,504 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 80 transitions, 198 flow [2023-11-29 04:38:42,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2023-11-29 04:38:42,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:42,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 04:38:42,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 04:38:42,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:38:42,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-29 04:38:42,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:42,706 INFO L85 PathProgramCache]: Analyzing trace with hash 512163319, now seen corresponding path program 1 times [2023-11-29 04:38:42,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:38:42,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213478761] [2023-11-29 04:38:42,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:42,707 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 [2023-11-29 04:38:42,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:38:42,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:38:42,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:38:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:42,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:38:42,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:42,824 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 [2023-11-29 04:38:42,830 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 [2023-11-29 04:38:42,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:38:42,878 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 [2023-11-29 04:38:42,893 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:38:42,893 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 [2023-11-29 04:38:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:38:42,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:42,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:38:42,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213478761] [2023-11-29 04:38:42,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213478761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:42,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:42,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:38:42,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051081496] [2023-11-29 04:38:42,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:42,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:38:42,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:38:42,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:38:42,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:38:43,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 86 [2023-11-29 04:38:43,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 80 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2023-11-29 04:38:43,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:38:43,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 86 [2023-11-29 04:38:43,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:38:43,350 INFO L124 PetriNetUnfolderBase]: 30/188 cut-off events. [2023-11-29 04:38:43,350 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 04:38:43,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 188 events. 30/188 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 721 event pairs, 4 based on Foata normal form. 4/141 useless extension candidates. Maximal degree in co-relation 220. Up to 43 conditions per place. [2023-11-29 04:38:43,353 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 30 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2023-11-29 04:38:43,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 291 flow [2023-11-29 04:38:43,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:38:43,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:38:43,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 263 transitions. [2023-11-29 04:38:43,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7645348837209303 [2023-11-29 04:38:43,356 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 263 transitions. [2023-11-29 04:38:43,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 263 transitions. [2023-11-29 04:38:43,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:38:43,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 263 transitions. [2023-11-29 04:38:43,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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) [2023-11-29 04:38:43,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 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) [2023-11-29 04:38:43,360 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 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) [2023-11-29 04:38:43,360 INFO L175 Difference]: Start difference. First operand has 83 places, 80 transitions, 198 flow. Second operand 4 states and 263 transitions. [2023-11-29 04:38:43,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 87 transitions, 291 flow [2023-11-29 04:38:43,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 87 transitions, 279 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:38:43,365 INFO L231 Difference]: Finished difference. Result has 83 places, 80 transitions, 212 flow [2023-11-29 04:38:43,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=83, PETRI_TRANSITIONS=80} [2023-11-29 04:38:43,366 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -2 predicate places. [2023-11-29 04:38:43,367 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 80 transitions, 212 flow [2023-11-29 04:38:43,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2023-11-29 04:38:43,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:43,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:43,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 04:38:43,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:38:43,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-29 04:38:43,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:43,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1304178446, now seen corresponding path program 1 times [2023-11-29 04:38:43,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:38:43,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054314001] [2023-11-29 04:38:43,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:43,573 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 [2023-11-29 04:38:43,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:38:43,574 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:38:43,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:38:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:43,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:38:43,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:43,713 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-29 04:38:43,713 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 1 case distinctions, treesize of input 9 treesize of output 11 [2023-11-29 04:38:43,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:38:43,842 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2023-11-29 04:38:43,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 21 [2023-11-29 04:38:43,859 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:38:43,859 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 [2023-11-29 04:38:43,899 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-29 04:38:43,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-11-29 04:38:43,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:38:43,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:43,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:38:43,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054314001] [2023-11-29 04:38:43,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054314001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:43,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:43,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:38:43,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454504390] [2023-11-29 04:38:43,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:43,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:38:43,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:38:43,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:38:43,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:38:44,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 86 [2023-11-29 04:38:44,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 80 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 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) [2023-11-29 04:38:44,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:38:44,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 86 [2023-11-29 04:38:44,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:38:44,684 INFO L124 PetriNetUnfolderBase]: 41/226 cut-off events. [2023-11-29 04:38:44,684 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-29 04:38:44,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 226 events. 41/226 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 936 event pairs, 6 based on Foata normal form. 10/177 useless extension candidates. Maximal degree in co-relation 204. Up to 73 conditions per place. [2023-11-29 04:38:44,687 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 32 selfloop transitions, 6 changer transitions 0/85 dead transitions. [2023-11-29 04:38:44,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 85 transitions, 297 flow [2023-11-29 04:38:44,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:38:44,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:38:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 298 transitions. [2023-11-29 04:38:44,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6930232558139535 [2023-11-29 04:38:44,690 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 298 transitions. [2023-11-29 04:38:44,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 298 transitions. [2023-11-29 04:38:44,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:38:44,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 298 transitions. [2023-11-29 04:38:44,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 59.6) internal successors, (298), 5 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) [2023-11-29 04:38:44,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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) [2023-11-29 04:38:44,694 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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) [2023-11-29 04:38:44,694 INFO L175 Difference]: Start difference. First operand has 83 places, 80 transitions, 212 flow. Second operand 5 states and 298 transitions. [2023-11-29 04:38:44,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 85 transitions, 297 flow [2023-11-29 04:38:44,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:38:44,697 INFO L231 Difference]: Finished difference. Result has 84 places, 79 transitions, 208 flow [2023-11-29 04:38:44,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2023-11-29 04:38:44,698 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -1 predicate places. [2023-11-29 04:38:44,698 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 208 flow [2023-11-29 04:38:44,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 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) [2023-11-29 04:38:44,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:44,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:44,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 04:38:44,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:38:44,902 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-29 04:38:44,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:44,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1302806026, now seen corresponding path program 1 times [2023-11-29 04:38:44,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:38:44,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527494643] [2023-11-29 04:38:44,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:44,904 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 [2023-11-29 04:38:44,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:38:44,905 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:38:44,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:38:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:44,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:38:44,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:44,994 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 [2023-11-29 04:38:45,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:38:45,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:45,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:38:45,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527494643] [2023-11-29 04:38:45,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527494643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:45,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:45,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:38:45,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990616781] [2023-11-29 04:38:45,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:45,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:38:45,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:38:45,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:38:45,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:38:45,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 86 [2023-11-29 04:38:45,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 79 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2023-11-29 04:38:45,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:38:45,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 86 [2023-11-29 04:38:45,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:38:45,216 INFO L124 PetriNetUnfolderBase]: 30/178 cut-off events. [2023-11-29 04:38:45,216 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-29 04:38:45,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 178 events. 30/178 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 649 event pairs, 13 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 201. Up to 57 conditions per place. [2023-11-29 04:38:45,218 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 29 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-11-29 04:38:45,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 268 flow [2023-11-29 04:38:45,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:38:45,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:38:45,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-11-29 04:38:45,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7325581395348837 [2023-11-29 04:38:45,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-11-29 04:38:45,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-11-29 04:38:45,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:38:45,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-11-29 04:38:45,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2023-11-29 04:38:45,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2023-11-29 04:38:45,221 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2023-11-29 04:38:45,221 INFO L175 Difference]: Start difference. First operand has 84 places, 79 transitions, 208 flow. Second operand 3 states and 189 transitions. [2023-11-29 04:38:45,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 268 flow [2023-11-29 04:38:45,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 76 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:38:45,225 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 203 flow [2023-11-29 04:38:45,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2023-11-29 04:38:45,226 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -5 predicate places. [2023-11-29 04:38:45,226 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 203 flow [2023-11-29 04:38:45,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2023-11-29 04:38:45,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:45,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:45,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 04:38:45,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:38:45,428 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-29 04:38:45,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:45,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1302806025, now seen corresponding path program 1 times [2023-11-29 04:38:45,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:38:45,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522601983] [2023-11-29 04:38:45,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:45,429 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 [2023-11-29 04:38:45,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:38:45,430 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:38:45,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:38:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:45,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:38:45,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:45,520 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 [2023-11-29 04:38:45,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:38:45,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:45,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:38:45,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522601983] [2023-11-29 04:38:45,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522601983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:45,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:45,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:38:45,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441474126] [2023-11-29 04:38:45,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:45,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:38:45,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:38:45,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:38:45,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:38:45,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 86 [2023-11-29 04:38:45,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2023-11-29 04:38:45,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:38:45,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 86 [2023-11-29 04:38:45,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:38:45,739 INFO L124 PetriNetUnfolderBase]: 28/166 cut-off events. [2023-11-29 04:38:45,739 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-29 04:38:45,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 166 events. 28/166 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 586 event pairs, 13 based on Foata normal form. 4/134 useless extension candidates. Maximal degree in co-relation 194. Up to 57 conditions per place. [2023-11-29 04:38:45,741 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 27 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2023-11-29 04:38:45,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 72 transitions, 259 flow [2023-11-29 04:38:45,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:38:45,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:38:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-29 04:38:45,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.748062015503876 [2023-11-29 04:38:45,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-29 04:38:45,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-29 04:38:45,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:38:45,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-29 04:38:45,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2023-11-29 04:38:45,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2023-11-29 04:38:45,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2023-11-29 04:38:45,744 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 203 flow. Second operand 3 states and 193 transitions. [2023-11-29 04:38:45,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 72 transitions, 259 flow [2023-11-29 04:38:45,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:38:45,747 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 195 flow [2023-11-29 04:38:45,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2023-11-29 04:38:45,748 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -9 predicate places. [2023-11-29 04:38:45,748 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 195 flow [2023-11-29 04:38:45,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2023-11-29 04:38:45,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:45,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:45,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:38:45,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:38:45,949 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-29 04:38:45,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:45,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1951660481, now seen corresponding path program 1 times [2023-11-29 04:38:45,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:38:45,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473478166] [2023-11-29 04:38:45,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:45,950 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 [2023-11-29 04:38:45,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:38:45,951 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:38:45,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:38:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:46,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:38:46,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:46,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:38:46,159 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 [2023-11-29 04:38:46,175 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:38:46,175 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 [2023-11-29 04:38:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:38:46,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:46,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:38:46,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473478166] [2023-11-29 04:38:46,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473478166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:46,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:46,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:38:46,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537126502] [2023-11-29 04:38:46,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:46,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:38:46,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:38:46,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:38:46,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:38:46,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 86 [2023-11-29 04:38:46,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 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) [2023-11-29 04:38:46,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:38:46,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 86 [2023-11-29 04:38:46,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:38:46,756 INFO L124 PetriNetUnfolderBase]: 29/164 cut-off events. [2023-11-29 04:38:46,756 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-29 04:38:46,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 164 events. 29/164 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 573 event pairs, 8 based on Foata normal form. 2/130 useless extension candidates. Maximal degree in co-relation 193. Up to 53 conditions per place. [2023-11-29 04:38:46,758 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 28 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2023-11-29 04:38:46,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 265 flow [2023-11-29 04:38:46,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:38:46,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:38:46,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 296 transitions. [2023-11-29 04:38:46,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6883720930232559 [2023-11-29 04:38:46,761 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 296 transitions. [2023-11-29 04:38:46,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 296 transitions. [2023-11-29 04:38:46,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:38:46,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 296 transitions. [2023-11-29 04:38:46,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 59.2) internal successors, (296), 5 states have internal predecessors, (296), 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) [2023-11-29 04:38:46,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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) [2023-11-29 04:38:46,766 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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) [2023-11-29 04:38:46,766 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 195 flow. Second operand 5 states and 296 transitions. [2023-11-29 04:38:46,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 265 flow [2023-11-29 04:38:46,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 73 transitions, 257 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:38:46,769 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 195 flow [2023-11-29 04:38:46,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2023-11-29 04:38:46,770 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -8 predicate places. [2023-11-29 04:38:46,770 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 195 flow [2023-11-29 04:38:46,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 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) [2023-11-29 04:38:46,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:46,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:46,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 04:38:46,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:38:46,976 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-29 04:38:46,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:46,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1951659362, now seen corresponding path program 1 times [2023-11-29 04:38:46,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:38:46,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273539437] [2023-11-29 04:38:46,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:46,976 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 [2023-11-29 04:38:46,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:38:46,977 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:38:46,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:38:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:47,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:38:47,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:47,196 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 11 treesize of output 7 [2023-11-29 04:38:47,202 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 11 treesize of output 7 [2023-11-29 04:38:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:38:47,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:47,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:38:47,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273539437] [2023-11-29 04:38:47,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273539437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:47,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:47,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:38:47,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790034698] [2023-11-29 04:38:47,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:47,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:38:47,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:38:47,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:38:47,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:38:47,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 86 [2023-11-29 04:38:47,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 195 flow. Second operand has 9 states, 9 states have (on average 55.888888888888886) internal successors, (503), 9 states have internal predecessors, (503), 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) [2023-11-29 04:38:47,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:38:47,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 86 [2023-11-29 04:38:47,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:38:48,112 INFO L124 PetriNetUnfolderBase]: 37/185 cut-off events. [2023-11-29 04:38:48,112 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-29 04:38:48,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 185 events. 37/185 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 636 event pairs, 20 based on Foata normal form. 2/151 useless extension candidates. Maximal degree in co-relation 221. Up to 78 conditions per place. [2023-11-29 04:38:48,114 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 35 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2023-11-29 04:38:48,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 83 transitions, 322 flow [2023-11-29 04:38:48,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:38:48,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:38:48,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 594 transitions. [2023-11-29 04:38:48,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6906976744186046 [2023-11-29 04:38:48,117 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 594 transitions. [2023-11-29 04:38:48,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 594 transitions. [2023-11-29 04:38:48,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:38:48,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 594 transitions. [2023-11-29 04:38:48,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.4) internal successors, (594), 10 states have internal predecessors, (594), 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) [2023-11-29 04:38:48,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 86.0) internal successors, (946), 11 states have internal predecessors, (946), 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) [2023-11-29 04:38:48,123 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 86.0) internal successors, (946), 11 states have internal predecessors, (946), 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) [2023-11-29 04:38:48,123 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 195 flow. Second operand 10 states and 594 transitions. [2023-11-29 04:38:48,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 83 transitions, 322 flow [2023-11-29 04:38:48,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 83 transitions, 306 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 04:38:48,126 INFO L231 Difference]: Finished difference. Result has 87 places, 77 transitions, 253 flow [2023-11-29 04:38:48,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=253, PETRI_PLACES=87, PETRI_TRANSITIONS=77} [2023-11-29 04:38:48,127 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2023-11-29 04:38:48,127 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 77 transitions, 253 flow [2023-11-29 04:38:48,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 55.888888888888886) internal successors, (503), 9 states have internal predecessors, (503), 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) [2023-11-29 04:38:48,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:48,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:48,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 04:38:48,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:38:48,328 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-29 04:38:48,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:48,329 INFO L85 PathProgramCache]: Analyzing trace with hash 823392300, now seen corresponding path program 1 times [2023-11-29 04:38:48,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:38:48,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97425017] [2023-11-29 04:38:48,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:48,329 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 [2023-11-29 04:38:48,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:38:48,330 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:38:48,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:38:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:48,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:38:48,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:48,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 04:38:48,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 04:38:48,514 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 [2023-11-29 04:38:48,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:38:48,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:38:48,584 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:38:48,585 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 [2023-11-29 04:38:48,590 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 [2023-11-29 04:38:48,620 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-29 04:38:48,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-11-29 04:38:48,767 INFO L349 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2023-11-29 04:38:48,767 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 3 case distinctions, treesize of input 24 treesize of output 43 [2023-11-29 04:38:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:38:49,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:49,033 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:38:49,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97425017] [2023-11-29 04:38:49,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97425017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:49,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:49,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:38:49,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768174292] [2023-11-29 04:38:49,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:49,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:38:49,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:38:49,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:38:49,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:38:49,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 86 [2023-11-29 04:38:49,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 77 transitions, 253 flow. Second operand has 5 states, 5 states have (on average 54.8) internal successors, (274), 5 states have internal predecessors, (274), 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) [2023-11-29 04:38:49,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:38:49,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 86 [2023-11-29 04:38:49,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:38:49,989 INFO L124 PetriNetUnfolderBase]: 47/225 cut-off events. [2023-11-29 04:38:49,989 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-29 04:38:49,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 225 events. 47/225 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 913 event pairs, 10 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 283. Up to 80 conditions per place. [2023-11-29 04:38:49,991 INFO L140 encePairwiseOnDemand]: 74/86 looper letters, 37 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2023-11-29 04:38:49,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 369 flow [2023-11-29 04:38:49,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:38:49,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:38:49,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 357 transitions. [2023-11-29 04:38:49,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6918604651162791 [2023-11-29 04:38:49,993 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 357 transitions. [2023-11-29 04:38:49,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 357 transitions. [2023-11-29 04:38:49,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:38:49,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 357 transitions. [2023-11-29 04:38:49,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.5) internal successors, (357), 6 states have internal predecessors, (357), 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) [2023-11-29 04:38:49,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 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) [2023-11-29 04:38:49,997 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 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) [2023-11-29 04:38:49,997 INFO L175 Difference]: Start difference. First operand has 87 places, 77 transitions, 253 flow. Second operand 6 states and 357 transitions. [2023-11-29 04:38:49,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 369 flow [2023-11-29 04:38:49,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 84 transitions, 364 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:38:50,000 INFO L231 Difference]: Finished difference. Result has 88 places, 78 transitions, 299 flow [2023-11-29 04:38:50,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=88, PETRI_TRANSITIONS=78} [2023-11-29 04:38:50,001 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 3 predicate places. [2023-11-29 04:38:50,001 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 78 transitions, 299 flow [2023-11-29 04:38:50,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.8) internal successors, (274), 5 states have internal predecessors, (274), 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) [2023-11-29 04:38:50,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:50,002 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:50,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 04:38:50,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:38:50,202 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-29 04:38:50,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:50,203 INFO L85 PathProgramCache]: Analyzing trace with hash -761574122, now seen corresponding path program 1 times [2023-11-29 04:38:50,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:38:50,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026588353] [2023-11-29 04:38:50,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:50,204 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 [2023-11-29 04:38:50,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:38:50,205 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:38:50,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:38:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:50,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 04:38:50,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:50,445 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 15 treesize of output 1 [2023-11-29 04:38:50,482 INFO L349 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2023-11-29 04:38:50,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2023-11-29 04:38:50,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 04:38:50,552 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 15 treesize of output 1 [2023-11-29 04:38:50,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 04:38:50,638 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:38:50,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:38:50,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2023-11-29 04:38:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:38:50,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:38:50,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026588353] [2023-11-29 04:38:50,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026588353] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:38:50,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:38:50,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-29 04:38:50,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691573360] [2023-11-29 04:38:50,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:38:50,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:38:50,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:38:50,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:38:50,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:38:55,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:38:59,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:39:03,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:39:05,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 86 [2023-11-29 04:39:05,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 78 transitions, 299 flow. Second operand has 14 states, 14 states have (on average 36.857142857142854) internal successors, (516), 14 states have internal predecessors, (516), 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) [2023-11-29 04:39:05,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:39:05,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 86 [2023-11-29 04:39:05,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:39:05,865 INFO L124 PetriNetUnfolderBase]: 57/225 cut-off events. [2023-11-29 04:39:05,865 INFO L125 PetriNetUnfolderBase]: For 119/126 co-relation queries the response was YES. [2023-11-29 04:39:05,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 225 events. 57/225 cut-off events. For 119/126 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 841 event pairs, 15 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 343. Up to 64 conditions per place. [2023-11-29 04:39:05,867 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 53 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2023-11-29 04:39:05,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 452 flow [2023-11-29 04:39:05,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:39:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 04:39:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 342 transitions. [2023-11-29 04:39:05,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49709302325581395 [2023-11-29 04:39:05,869 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 342 transitions. [2023-11-29 04:39:05,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 342 transitions. [2023-11-29 04:39:05,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:39:05,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 342 transitions. [2023-11-29 04:39:05,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 42.75) internal successors, (342), 8 states have internal predecessors, (342), 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) [2023-11-29 04:39:05,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 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) [2023-11-29 04:39:05,873 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 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) [2023-11-29 04:39:05,873 INFO L175 Difference]: Start difference. First operand has 88 places, 78 transitions, 299 flow. Second operand 8 states and 342 transitions. [2023-11-29 04:39:05,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 452 flow [2023-11-29 04:39:05,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 89 transitions, 444 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:39:05,875 INFO L231 Difference]: Finished difference. Result has 91 places, 77 transitions, 313 flow [2023-11-29 04:39:05,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=313, PETRI_PLACES=91, PETRI_TRANSITIONS=77} [2023-11-29 04:39:05,876 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 6 predicate places. [2023-11-29 04:39:05,876 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 77 transitions, 313 flow [2023-11-29 04:39:05,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 36.857142857142854) internal successors, (516), 14 states have internal predecessors, (516), 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) [2023-11-29 04:39:05,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:39:05,877 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:05,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:39:06,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:39:06,077 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-29 04:39:06,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:06,078 INFO L85 PathProgramCache]: Analyzing trace with hash -761574121, now seen corresponding path program 1 times [2023-11-29 04:39:06,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:39:06,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42455624] [2023-11-29 04:39:06,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:06,078 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 [2023-11-29 04:39:06,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:39:06,079 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:39:06,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:39:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:06,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 04:39:06,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:06,343 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 15 treesize of output 1 [2023-11-29 04:39:06,346 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 11 treesize of output 7 [2023-11-29 04:39:06,394 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2023-11-29 04:39:06,395 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 17 treesize of output 17 [2023-11-29 04:39:06,405 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 18 treesize of output 13 [2023-11-29 04:39:06,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:39:06,477 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 11 treesize of output 7 [2023-11-29 04:39:06,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 04:39:06,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:39:06,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 04:39:06,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:39:06,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:07,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2023-11-29 04:39:07,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2023-11-29 04:39:07,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2023-11-29 04:39:08,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:39:08,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 303 treesize of output 401 [2023-11-29 04:39:09,710 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:39:09,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 254 treesize of output 518 [2023-11-29 04:39:11,513 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:39:11,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:39:11,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42455624] [2023-11-29 04:39:11,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42455624] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:39:11,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:39:11,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 04:39:11,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802620472] [2023-11-29 04:39:11,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:39:11,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 04:39:11,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:39:11,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 04:39:11,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:39:13,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:39:18,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:39:22,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:39:27,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:39:32,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:39:36,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:39:41,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:39:49,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:39:50,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 86 [2023-11-29 04:39:50,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 77 transitions, 313 flow. Second operand has 16 states, 16 states have (on average 31.75) internal successors, (508), 16 states have internal predecessors, (508), 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) [2023-11-29 04:39:50,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:39:50,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 86 [2023-11-29 04:39:50,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:39:52,859 INFO L124 PetriNetUnfolderBase]: 55/222 cut-off events. [2023-11-29 04:39:52,859 INFO L125 PetriNetUnfolderBase]: For 197/204 co-relation queries the response was YES. [2023-11-29 04:39:52,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 222 events. 55/222 cut-off events. For 197/204 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 838 event pairs, 15 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 351. Up to 64 conditions per place. [2023-11-29 04:39:52,860 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 51 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2023-11-29 04:39:52,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 88 transitions, 462 flow [2023-11-29 04:39:52,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:39:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 04:39:52,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 300 transitions. [2023-11-29 04:39:52,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2023-11-29 04:39:52,863 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 300 transitions. [2023-11-29 04:39:52,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 300 transitions. [2023-11-29 04:39:52,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:39:52,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 300 transitions. [2023-11-29 04:39:52,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 37.5) internal successors, (300), 8 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) [2023-11-29 04:39:52,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 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) [2023-11-29 04:39:52,867 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 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) [2023-11-29 04:39:52,867 INFO L175 Difference]: Start difference. First operand has 91 places, 77 transitions, 313 flow. Second operand 8 states and 300 transitions. [2023-11-29 04:39:52,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 88 transitions, 462 flow [2023-11-29 04:39:52,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 421 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-11-29 04:39:52,871 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 294 flow [2023-11-29 04:39:52,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=294, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2023-11-29 04:39:52,872 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 3 predicate places. [2023-11-29 04:39:52,872 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 294 flow [2023-11-29 04:39:52,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 31.75) internal successors, (508), 16 states have internal predecessors, (508), 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) [2023-11-29 04:39:52,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:39:52,873 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] [2023-11-29 04:39:52,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:39:53,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:39:53,074 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting deleteErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-29 04:39:53,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:53,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1855511274, now seen corresponding path program 1 times [2023-11-29 04:39:53,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:39:53,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146722325] [2023-11-29 04:39:53,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:53,074 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 [2023-11-29 04:39:53,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:39:53,075 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:39:53,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:39:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:53,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:39:53,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:53,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:39:53,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:53,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:39:53,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146722325] [2023-11-29 04:39:53,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146722325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:53,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:39:53,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:39:53,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797559843] [2023-11-29 04:39:53,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:53,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:39:53,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:39:53,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:39:53,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:39:53,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 86 [2023-11-29 04:39:53,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 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) [2023-11-29 04:39:53,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:39:53,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 86 [2023-11-29 04:39:53,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:39:53,633 INFO L124 PetriNetUnfolderBase]: 22/85 cut-off events. [2023-11-29 04:39:53,633 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-29 04:39:53,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 85 events. 22/85 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 153 event pairs, 15 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 227. Up to 54 conditions per place. [2023-11-29 04:39:53,634 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 27 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2023-11-29 04:39:53,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 41 transitions, 234 flow [2023-11-29 04:39:53,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:39:53,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:39:53,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 280 transitions. [2023-11-29 04:39:53,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2023-11-29 04:39:53,637 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 280 transitions. [2023-11-29 04:39:53,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 280 transitions. [2023-11-29 04:39:53,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:39:53,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 280 transitions. [2023-11-29 04:39:53,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 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) [2023-11-29 04:39:53,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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) [2023-11-29 04:39:53,640 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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) [2023-11-29 04:39:53,640 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 294 flow. Second operand 5 states and 280 transitions. [2023-11-29 04:39:53,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 41 transitions, 234 flow [2023-11-29 04:39:53,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 41 transitions, 206 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-11-29 04:39:53,642 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 150 flow [2023-11-29 04:39:53,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-11-29 04:39:53,643 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -34 predicate places. [2023-11-29 04:39:53,643 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 150 flow [2023-11-29 04:39:53,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 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) [2023-11-29 04:39:53,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:39:53,644 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, 1, 1, 1, 1] [2023-11-29 04:39:53,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 04:39:53,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:39:53,844 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-29 04:39:53,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:53,845 INFO L85 PathProgramCache]: Analyzing trace with hash 370630773, now seen corresponding path program 1 times [2023-11-29 04:39:53,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:39:53,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874187732] [2023-11-29 04:39:53,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:53,845 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 [2023-11-29 04:39:53,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:39:53,846 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:39:53,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:39:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:39:54,057 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:39:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:39:54,225 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-29 04:39:54,226 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 04:39:54,227 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (68 of 69 remaining) [2023-11-29 04:39:54,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 69 remaining) [2023-11-29 04:39:54,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 69 remaining) [2023-11-29 04:39:54,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 69 remaining) [2023-11-29 04:39:54,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 69 remaining) [2023-11-29 04:39:54,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 69 remaining) [2023-11-29 04:39:54,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 69 remaining) [2023-11-29 04:39:54,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 69 remaining) [2023-11-29 04:39:54,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 69 remaining) [2023-11-29 04:39:54,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 69 remaining) [2023-11-29 04:39:54,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 69 remaining) [2023-11-29 04:39:54,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 69 remaining) [2023-11-29 04:39:54,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 69 remaining) [2023-11-29 04:39:54,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 69 remaining) [2023-11-29 04:39:54,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 69 remaining) [2023-11-29 04:39:54,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 69 remaining) [2023-11-29 04:39:54,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 69 remaining) [2023-11-29 04:39:54,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 69 remaining) [2023-11-29 04:39:54,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 69 remaining) [2023-11-29 04:39:54,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 69 remaining) [2023-11-29 04:39:54,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 69 remaining) [2023-11-29 04:39:54,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 69 remaining) [2023-11-29 04:39:54,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 69 remaining) [2023-11-29 04:39:54,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 69 remaining) [2023-11-29 04:39:54,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (44 of 69 remaining) [2023-11-29 04:39:54,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 69 remaining) [2023-11-29 04:39:54,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 69 remaining) [2023-11-29 04:39:54,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 69 remaining) [2023-11-29 04:39:54,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 69 remaining) [2023-11-29 04:39:54,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 69 remaining) [2023-11-29 04:39:54,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 69 remaining) [2023-11-29 04:39:54,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr4ASSERT_VIOLATIONMEMORY_FREE (37 of 69 remaining) [2023-11-29 04:39:54,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr12ASSERT_VIOLATIONMEMORY_FREE (36 of 69 remaining) [2023-11-29 04:39:54,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr5ASSERT_VIOLATIONMEMORY_FREE (35 of 69 remaining) [2023-11-29 04:39:54,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr13ASSERT_VIOLATIONMEMORY_FREE (34 of 69 remaining) [2023-11-29 04:39:54,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr6ASSERT_VIOLATIONMEMORY_FREE (33 of 69 remaining) [2023-11-29 04:39:54,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr14ASSERT_VIOLATIONMEMORY_FREE (32 of 69 remaining) [2023-11-29 04:39:54,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr7ASSERT_VIOLATIONMEMORY_FREE (31 of 69 remaining) [2023-11-29 04:39:54,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr8ASSERT_VIOLATIONMEMORY_FREE (30 of 69 remaining) [2023-11-29 04:39:54,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr9ASSERT_VIOLATIONMEMORY_FREE (29 of 69 remaining) [2023-11-29 04:39:54,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 69 remaining) [2023-11-29 04:39:54,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 69 remaining) [2023-11-29 04:39:54,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 69 remaining) [2023-11-29 04:39:54,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 69 remaining) [2023-11-29 04:39:54,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 69 remaining) [2023-11-29 04:39:54,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 69 remaining) [2023-11-29 04:39:54,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 69 remaining) [2023-11-29 04:39:54,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 69 remaining) [2023-11-29 04:39:54,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 69 remaining) [2023-11-29 04:39:54,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 69 remaining) [2023-11-29 04:39:54,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 69 remaining) [2023-11-29 04:39:54,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 69 remaining) [2023-11-29 04:39:54,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 69 remaining) [2023-11-29 04:39:54,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 69 remaining) [2023-11-29 04:39:54,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 69 remaining) [2023-11-29 04:39:54,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 69 remaining) [2023-11-29 04:39:54,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 69 remaining) [2023-11-29 04:39:54,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 69 remaining) [2023-11-29 04:39:54,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 69 remaining) [2023-11-29 04:39:54,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 69 remaining) [2023-11-29 04:39:54,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr4ASSERT_VIOLATIONMEMORY_FREE (8 of 69 remaining) [2023-11-29 04:39:54,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr12ASSERT_VIOLATIONMEMORY_FREE (7 of 69 remaining) [2023-11-29 04:39:54,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr5ASSERT_VIOLATIONMEMORY_FREE (6 of 69 remaining) [2023-11-29 04:39:54,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr13ASSERT_VIOLATIONMEMORY_FREE (5 of 69 remaining) [2023-11-29 04:39:54,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr6ASSERT_VIOLATIONMEMORY_FREE (4 of 69 remaining) [2023-11-29 04:39:54,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr14ASSERT_VIOLATIONMEMORY_FREE (3 of 69 remaining) [2023-11-29 04:39:54,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr7ASSERT_VIOLATIONMEMORY_FREE (2 of 69 remaining) [2023-11-29 04:39:54,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr8ASSERT_VIOLATIONMEMORY_FREE (1 of 69 remaining) [2023-11-29 04:39:54,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr9ASSERT_VIOLATIONMEMORY_FREE (0 of 69 remaining) [2023-11-29 04:39:54,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:39:54,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:39:54,449 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:54,454 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 04:39:54,454 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:39:54,488 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre13 could not be translated [2023-11-29 04:39:54,490 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc7 [2023-11-29 04:39:54,490 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ite8 [2023-11-29 04:39:54,490 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem4 [2023-11-29 04:39:54,490 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #in~argc [2023-11-29 04:39:54,491 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression #in~argc has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-29 04:39:54,491 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #in~argv [2023-11-29 04:39:54,491 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem15 could not be translated [2023-11-29 04:39:54,491 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre16 could not be translated [2023-11-29 04:39:54,492 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #in~argv [2023-11-29 04:39:54,492 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #in~argc [2023-11-29 04:39:54,492 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression #in~argc has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-29 04:39:54,493 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem18 could not be translated [2023-11-29 04:39:54,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:39:54 BasicIcfg [2023-11-29 04:39:54,501 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:39:54,501 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:39:54,502 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:39:54,502 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:39:54,502 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:38:39" (3/4) ... [2023-11-29 04:39:54,504 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 04:39:54,505 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:39:54,506 INFO L158 Benchmark]: Toolchain (without parser) took 76357.85ms. Allocated memory was 88.1MB in the beginning and 151.0MB in the end (delta: 62.9MB). Free memory was 67.3MB in the beginning and 112.1MB in the end (delta: -44.7MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2023-11-29 04:39:54,506 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory is still 65.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:39:54,506 INFO L158 Benchmark]: CACSL2BoogieTranslator took 750.97ms. Allocated memory was 88.1MB in the beginning and 125.8MB in the end (delta: 37.7MB). Free memory was 67.0MB in the beginning and 96.0MB in the end (delta: -29.0MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2023-11-29 04:39:54,506 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.30ms. Allocated memory is still 125.8MB. Free memory was 95.3MB in the beginning and 92.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:39:54,507 INFO L158 Benchmark]: Boogie Preprocessor took 70.91ms. Allocated memory is still 125.8MB. Free memory was 92.8MB in the beginning and 89.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:39:54,507 INFO L158 Benchmark]: RCFGBuilder took 856.37ms. Allocated memory is still 125.8MB. Free memory was 89.0MB in the beginning and 99.0MB in the end (delta: -10.1MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-29 04:39:54,507 INFO L158 Benchmark]: TraceAbstraction took 74611.42ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 98.7MB in the beginning and 113.1MB in the end (delta: -14.4MB). Peak memory consumption was 91.5MB. Max. memory is 16.1GB. [2023-11-29 04:39:54,508 INFO L158 Benchmark]: Witness Printer took 3.60ms. Allocated memory is still 151.0MB. Free memory was 113.1MB in the beginning and 112.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:39:54,509 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory is still 65.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 750.97ms. Allocated memory was 88.1MB in the beginning and 125.8MB in the end (delta: 37.7MB). Free memory was 67.0MB in the beginning and 96.0MB in the end (delta: -29.0MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.30ms. Allocated memory is still 125.8MB. Free memory was 95.3MB in the beginning and 92.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.91ms. Allocated memory is still 125.8MB. Free memory was 92.8MB in the beginning and 89.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 856.37ms. Allocated memory is still 125.8MB. Free memory was 89.0MB in the beginning and 99.0MB in the end (delta: -10.1MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 74611.42ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 98.7MB in the beginning and 113.1MB in the end (delta: -14.4MB). Peak memory consumption was 91.5MB. Max. memory is 16.1GB. * Witness Printer took 3.60ms. Allocated memory is still 151.0MB. Free memory was 113.1MB in the beginning and 112.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc7 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ite8 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #in~argc - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #in~argc has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #in~argv - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem15 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre16 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #in~argv - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #in~argc - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #in~argc has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem18 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1069]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1069. Possible FailurePath: [L1070] 0 pthread_t id1, id2; [L1071] 0 struct item *list = ((void *)0); [L1072] FCALL, FORK 0 pthread_create(&id1, ((void *)0), build, list) VAL [\old(argc)=6, argc=6, argv={10:9}, id1={5:0}, id2={7:0}, list={0:0}] [L1048] 1 struct item *list = (struct item *)plist; [L1048] 1 struct item *list = (struct item *)plist; VAL [list={15:0}, plist={0:0}, plist={0:0}] [L1050] CALL 1 append(&list) [L1042] 1 struct item *elem = malloc(sizeof *elem); [L1043] EXPR 1 \read(**plist) VAL [list={15:0}, plist={0:0}, plist={0:0}] [L1043] 1 elem->next = *plist [L1044] EXPR 1 elem->next VAL [list={15:0}, plist={0:0}, plist={0:0}] [L1044] EXPR 1 (elem->next) ? elem->next->data : malloc(sizeof *elem) [L1044] EXPR 1 (elem->next) ? elem->next->data : malloc(sizeof *elem) VAL [elem={1:0}, plist={15:0}, plist={15:0}] [L1044] 1 elem->data = (elem->next) ? elem->next->data : malloc(sizeof *elem) [L1045] 1 *plist = elem [L1050] RET 1 append(&list) [L1051] COND FALSE 1 !(__VERIFIER_nondet_int()) [L1073] 0 \read(id1) [L1073] FCALL, JOIN 1 pthread_join(id1, ((void *)0)) VAL [\old(argc)=6, argc=6, argv={10:9}, id1={5:0}, id2={7:0}, list={0:0}] [L1074] FCALL, FORK 0 pthread_create(&id2, ((void *)0), delete, list) VAL [\old(argc)=6, argc=6, argv={10:9}, id1={5:0}, id2={7:0}, list={0:0}, plist={0:0}] [L1055] 2 struct item *list = (struct item *)plist; VAL [list={0:0}, plist={0:0}, plist={0:0}] [L1056] COND FALSE 2 !(\read(*list)) VAL [list={0:0}, plist={0:0}, plist={0:0}] [L1062] COND FALSE 2 !(\read(*list)) [L1075] 0 \read(id2) VAL [\result={0:0}, list={0:0}, plist={0:0}, plist={0:0}] [L1075] FCALL, JOIN 2 pthread_join(id2, ((void *)0)) VAL [\old(argc)=6, \result={0:0}, argc=6, argv={10:9}, id1={5:0}, id2={7:0}, list={0:0}, list={0:0}, plist={0:0}, plist={0:0}] [L1076] 0 return 0; [L1076] 0 return 0; [L1076] 0 return 0; VAL [\old(argc)=6, \result=0, \result={0:0}, argc=6, argv={10:9}, list={0:0}, list={0:0}, plist={0:0}, plist={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1072]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1074]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 142 locations, 69 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 74.4s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 62.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 2516 SdHoareTripleChecker+Valid, 60.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1836 mSDsluCounter, 1632 SdHoareTripleChecker+Invalid, 58.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1464 mSDsCounter, 120 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6371 IncrementalHoareTripleChecker+Invalid, 6498 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 120 mSolverCounterUnsat, 168 mSDtfsCounter, 6371 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 103 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=313occurred in iteration=11, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 160 ConstructedInterpolants, 25 QuantifiedInterpolants, 1989 SizeOfPredicates, 79 NumberOfNonLiveVariables, 1422 ConjunctsInSsa, 147 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 4/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 04:39:54,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baea067-3cde-4564-81ea-098284c431b3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample