./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB --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 a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:22:29,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:22:29,937 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-27 23:22:29,943 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:22:29,943 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:22:29,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:22:29,974 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:22:29,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:22:29,975 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:22:29,975 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:22:29,975 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:22:29,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:22:29,976 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:22:29,976 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:22:29,976 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:22:29,977 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:22:29,977 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:22:29,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:22:29,977 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:22:29,977 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:22:29,978 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 23:22:29,978 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 23:22:29,978 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 23:22:29,978 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:22:29,978 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:22:29,978 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:22:29,979 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:22:29,979 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:22:29,979 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:22:29,979 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:22:29,979 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:22:29,979 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:22:29,980 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:22:29,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:22:29,980 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:22:29,980 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:22:29,980 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:22:29,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:22:29,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:22:29,981 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:22:29,981 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:22:29,981 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:22:29,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:22:29,982 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:22:29,982 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:22:29,982 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:22:29,982 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:22:29,982 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB 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 -> a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 [2024-11-27 23:22:30,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:22:30,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:22:30,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:22:30,330 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:22:30,330 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:22:30,332 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2024-11-27 23:22:33,476 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/data/5ce5c68e7/7835fbfd8e5c4224a36eac466b6e2297/FLAG480fe782f [2024-11-27 23:22:33,886 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:22:33,887 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2024-11-27 23:22:33,909 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/data/5ce5c68e7/7835fbfd8e5c4224a36eac466b6e2297/FLAG480fe782f [2024-11-27 23:22:33,933 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/data/5ce5c68e7/7835fbfd8e5c4224a36eac466b6e2297 [2024-11-27 23:22:33,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:22:33,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:22:33,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:22:33,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:22:33,951 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:22:33,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:22:33" (1/1) ... [2024-11-27 23:22:33,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1444ef2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:33, skipping insertion in model container [2024-11-27 23:22:33,953 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:22:33" (1/1) ... [2024-11-27 23:22:34,008 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:22:34,599 WARN L609 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2024-11-27 23:22:34,600 WARN L609 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2024-11-27 23:22:34,601 WARN L609 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2024-11-27 23:22:34,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:22:34,647 ERROR L321 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) [2024-11-27 23:22:34,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@36542de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:34, skipping insertion in model container [2024-11-27 23:22:34,648 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:22:34,648 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-27 23:22:34,650 INFO L158 Benchmark]: Toolchain (without parser) took 711.33ms. Allocated memory is still 142.6MB. Free memory was 117.7MB in the beginning and 102.8MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:22:34,651 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 142.6MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:22:34,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 707.89ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 102.8MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:22:34,652 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 142.6MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 707.89ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 102.8MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 860]: 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB --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 a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:22:37,150 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:22:37,286 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-27 23:22:37,298 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:22:37,298 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:22:37,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:22:37,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:22:37,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:22:37,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:22:37,328 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:22:37,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:22:37,328 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:22:37,328 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:22:37,328 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:22:37,329 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:22:37,329 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:22:37,329 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:22:37,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:22:37,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:22:37,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:22:37,330 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 23:22:37,330 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 23:22:37,330 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 23:22:37,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:22:37,330 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:22:37,330 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-27 23:22:37,330 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-27 23:22:37,331 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:22:37,331 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:22:37,331 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:22:37,331 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:22:37,331 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:22:37,331 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:22:37,331 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:22:37,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:22:37,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:22:37,332 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:22:37,332 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:22:37,332 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:22:37,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:22:37,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:22:37,333 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:22:37,333 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:22:37,333 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-27 23:22:37,333 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-27 23:22:37,333 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:22:37,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:22:37,333 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:22:37,333 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:22:37,334 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB 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 -> a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 [2024-11-27 23:22:37,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:22:37,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:22:37,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:22:37,660 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:22:37,660 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:22:37,661 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2024-11-27 23:22:40,760 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/data/db54f033d/97ff6a6b65ee4d4992721bc6517c6c34/FLAGee892ab40 [2024-11-27 23:22:41,132 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:22:41,136 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2024-11-27 23:22:41,160 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/data/db54f033d/97ff6a6b65ee4d4992721bc6517c6c34/FLAGee892ab40 [2024-11-27 23:22:41,323 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/data/db54f033d/97ff6a6b65ee4d4992721bc6517c6c34 [2024-11-27 23:22:41,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:22:41,327 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:22:41,329 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:22:41,329 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:22:41,334 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:22:41,334 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:22:41" (1/1) ... [2024-11-27 23:22:41,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678e322c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:41, skipping insertion in model container [2024-11-27 23:22:41,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:22:41" (1/1) ... [2024-11-27 23:22:41,371 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:22:41,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:22:41,851 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-27 23:22:41,867 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:22:41,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:22:41,947 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:22:42,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:22:42,110 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:22:42,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:42 WrapperNode [2024-11-27 23:22:42,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:22:42,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:22:42,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:22:42,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:22:42,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:42" (1/1) ... [2024-11-27 23:22:42,139 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:42" (1/1) ... [2024-11-27 23:22:42,164 INFO L138 Inliner]: procedures = 235, calls = 76, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 119 [2024-11-27 23:22:42,164 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:22:42,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:22:42,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:22:42,165 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:22:42,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:42" (1/1) ... [2024-11-27 23:22:42,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:42" (1/1) ... [2024-11-27 23:22:42,180 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:42" (1/1) ... [2024-11-27 23:22:42,236 INFO L175 MemorySlicer]: Split 37 memory accesses to 2 slices as follows [2, 35]. 95 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2]. The 10 writes are split as follows [0, 10]. [2024-11-27 23:22:42,237 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:42" (1/1) ... [2024-11-27 23:22:42,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:42" (1/1) ... [2024-11-27 23:22:42,251 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:42" (1/1) ... [2024-11-27 23:22:42,252 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:42" (1/1) ... [2024-11-27 23:22:42,258 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:42" (1/1) ... [2024-11-27 23:22:42,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:42" (1/1) ... [2024-11-27 23:22:42,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:42" (1/1) ... [2024-11-27 23:22:42,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:22:42,267 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:22:42,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:22:42,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:22:42,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:42" (1/1) ... [2024-11-27 23:22:42,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:22:42,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:42,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:22:42,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:22:42,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-27 23:22:42,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-27 23:22:42,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 23:22:42,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 23:22:42,345 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2024-11-27 23:22:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2024-11-27 23:22:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 23:22:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-27 23:22:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-27 23:22:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 23:22:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 23:22:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-27 23:22:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-27 23:22:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2024-11-27 23:22:42,346 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2024-11-27 23:22:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2024-11-27 23:22:42,347 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2024-11-27 23:22:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 23:22:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:22:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 23:22:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 23:22:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2024-11-27 23:22:42,347 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2024-11-27 23:22:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:22:42,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:22:42,514 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:22:42,517 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:22:43,435 INFO L? ?]: Removed 170 outVars from TransFormulas that were not future-live. [2024-11-27 23:22:43,435 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:22:43,453 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:22:43,453 INFO L312 CfgBuilder]: Removed 23 assume(true) statements. [2024-11-27 23:22:43,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:22:43 BoogieIcfgContainer [2024-11-27 23:22:43,454 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:22:43,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:22:43,456 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:22:43,463 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:22:43,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:22:41" (1/3) ... [2024-11-27 23:22:43,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca1f36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:22:43, skipping insertion in model container [2024-11-27 23:22:43,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:42" (2/3) ... [2024-11-27 23:22:43,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca1f36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:22:43, skipping insertion in model container [2024-11-27 23:22:43,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:22:43" (3/3) ... [2024-11-27 23:22:43,469 INFO L128 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-1.i [2024-11-27 23:22:43,487 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:22:43,489 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bubble_sort_linux-1.i that has 5 procedures, 219 locations, 1 initial locations, 23 loop locations, and 71 error locations. [2024-11-27 23:22:43,541 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:22:43,559 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@11e4dc53, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:22:43,559 INFO L334 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2024-11-27 23:22:43,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 219 states, 120 states have (on average 2.1416666666666666) internal successors, (257), 209 states have internal predecessors, (257), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-27 23:22:43,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-27 23:22:43,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:43,576 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-27 23:22:43,577 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:22:43,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:43,583 INFO L85 PathProgramCache]: Analyzing trace with hash 419005537, now seen corresponding path program 1 times [2024-11-27 23:22:43,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:22:43,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330949298] [2024-11-27 23:22:43,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:43,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:43,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:43,601 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:43,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:22:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:43,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:22:43,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:43,751 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:43,751 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:22:43,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330949298] [2024-11-27 23:22:43,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330949298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:43,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:43,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:22:43,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963094276] [2024-11-27 23:22:43,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:43,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:22:43,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:22:43,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:22:43,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:22:43,796 INFO L87 Difference]: Start difference. First operand has 219 states, 120 states have (on average 2.1416666666666666) internal successors, (257), 209 states have internal predecessors, (257), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2024-11-27 23:22:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:43,840 INFO L93 Difference]: Finished difference Result 214 states and 236 transitions. [2024-11-27 23:22:43,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:22:43,844 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2024-11-27 23:22:43,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:43,854 INFO L225 Difference]: With dead ends: 214 [2024-11-27 23:22:43,855 INFO L226 Difference]: Without dead ends: 212 [2024-11-27 23:22:43,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:22:43,861 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:43,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:22:43,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-27 23:22:43,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2024-11-27 23:22:43,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 117 states have (on average 1.7692307692307692) internal successors, (207), 201 states have internal predecessors, (207), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-27 23:22:43,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 234 transitions. [2024-11-27 23:22:43,953 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 234 transitions. Word has length 5 [2024-11-27 23:22:43,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:43,954 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 234 transitions. [2024-11-27 23:22:43,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2024-11-27 23:22:43,955 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 234 transitions. [2024-11-27 23:22:43,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-27 23:22:43,955 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:43,956 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-27 23:22:43,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:22:44,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:44,157 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:22:44,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:44,157 INFO L85 PathProgramCache]: Analyzing trace with hash 419005599, now seen corresponding path program 1 times [2024-11-27 23:22:44,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:22:44,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2097545103] [2024-11-27 23:22:44,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:44,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:44,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:44,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:44,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:22:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:44,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:22:44,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:44,288 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 [2024-11-27 23:22:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:44,308 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:44,308 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:22:44,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097545103] [2024-11-27 23:22:44,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097545103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:44,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:44,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:22:44,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278785138] [2024-11-27 23:22:44,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:44,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:22:44,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:22:44,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:22:44,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:22:44,312 INFO L87 Difference]: Start difference. First operand 212 states and 234 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-11-27 23:22:44,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:44,591 INFO L93 Difference]: Finished difference Result 209 states and 231 transitions. [2024-11-27 23:22:44,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:22:44,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2024-11-27 23:22:44,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:44,595 INFO L225 Difference]: With dead ends: 209 [2024-11-27 23:22:44,595 INFO L226 Difference]: Without dead ends: 209 [2024-11-27 23:22:44,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:22:44,596 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 4 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:44,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 378 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:22:44,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-27 23:22:44,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2024-11-27 23:22:44,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 117 states have (on average 1.7435897435897436) internal successors, (204), 198 states have internal predecessors, (204), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-27 23:22:44,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 231 transitions. [2024-11-27 23:22:44,621 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 231 transitions. Word has length 5 [2024-11-27 23:22:44,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:44,621 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 231 transitions. [2024-11-27 23:22:44,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-11-27 23:22:44,621 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 231 transitions. [2024-11-27 23:22:44,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-27 23:22:44,622 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:44,622 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-27 23:22:44,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 23:22:44,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:44,826 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:22:44,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:44,827 INFO L85 PathProgramCache]: Analyzing trace with hash 419005600, now seen corresponding path program 1 times [2024-11-27 23:22:44,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:22:44,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527913220] [2024-11-27 23:22:44,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:44,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:44,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:44,834 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:44,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:22:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:44,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:22:44,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:44,925 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 [2024-11-27 23:22:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:44,950 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:44,950 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:22:44,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527913220] [2024-11-27 23:22:44,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527913220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:44,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:44,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:22:44,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891208876] [2024-11-27 23:22:44,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:44,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:22:44,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:22:44,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:22:44,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:22:44,951 INFO L87 Difference]: Start difference. First operand 209 states and 231 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-11-27 23:22:45,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:45,300 INFO L93 Difference]: Finished difference Result 206 states and 228 transitions. [2024-11-27 23:22:45,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:22:45,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2024-11-27 23:22:45,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:45,303 INFO L225 Difference]: With dead ends: 206 [2024-11-27 23:22:45,303 INFO L226 Difference]: Without dead ends: 206 [2024-11-27 23:22:45,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:22:45,304 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 4 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:45,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 382 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:22:45,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-27 23:22:45,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2024-11-27 23:22:45,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 117 states have (on average 1.7179487179487178) internal successors, (201), 195 states have internal predecessors, (201), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-27 23:22:45,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 228 transitions. [2024-11-27 23:22:45,322 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 228 transitions. Word has length 5 [2024-11-27 23:22:45,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:45,322 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 228 transitions. [2024-11-27 23:22:45,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-11-27 23:22:45,323 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 228 transitions. [2024-11-27 23:22:45,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-27 23:22:45,323 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:45,323 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:45,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:22:45,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:45,524 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:22:45,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:45,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1421389204, now seen corresponding path program 1 times [2024-11-27 23:22:45,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:22:45,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [71719506] [2024-11-27 23:22:45,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:45,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:45,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:45,527 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:45,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:22:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:45,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:22:45,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:45,717 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-27 23:22:45,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-27 23:22:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:45,813 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:45,813 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:22:45,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71719506] [2024-11-27 23:22:45,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71719506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:45,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:45,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:22:45,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993368087] [2024-11-27 23:22:45,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:45,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:22:45,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:22:45,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:22:45,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:22:45,817 INFO L87 Difference]: Start difference. First operand 206 states and 228 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:46,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:46,484 INFO L93 Difference]: Finished difference Result 243 states and 264 transitions. [2024-11-27 23:22:46,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:22:46,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-27 23:22:46,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:46,486 INFO L225 Difference]: With dead ends: 243 [2024-11-27 23:22:46,486 INFO L226 Difference]: Without dead ends: 243 [2024-11-27 23:22:46,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:22:46,487 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 255 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:46,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 403 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:22:46,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-27 23:22:46,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 220. [2024-11-27 23:22:46,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 131 states have (on average 1.7404580152671756) internal successors, (228), 208 states have internal predecessors, (228), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-27 23:22:46,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 255 transitions. [2024-11-27 23:22:46,498 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 255 transitions. Word has length 8 [2024-11-27 23:22:46,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:46,499 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 255 transitions. [2024-11-27 23:22:46,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:46,499 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 255 transitions. [2024-11-27 23:22:46,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-27 23:22:46,499 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:46,500 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:46,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:22:46,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:46,704 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:22:46,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:46,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1421389205, now seen corresponding path program 1 times [2024-11-27 23:22:46,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:22:46,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594230294] [2024-11-27 23:22:46,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:46,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:46,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:46,708 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:46,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:22:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:46,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 23:22:46,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:46,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:22:46,922 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 [2024-11-27 23:22:47,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:47,053 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:47,053 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:22:47,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594230294] [2024-11-27 23:22:47,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594230294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:47,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:47,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:22:47,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522805946] [2024-11-27 23:22:47,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:47,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:22:47,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:22:47,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:22:47,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:22:47,055 INFO L87 Difference]: Start difference. First operand 220 states and 255 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:47,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:47,876 INFO L93 Difference]: Finished difference Result 224 states and 248 transitions. [2024-11-27 23:22:47,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:22:47,876 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-27 23:22:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:47,877 INFO L225 Difference]: With dead ends: 224 [2024-11-27 23:22:47,877 INFO L226 Difference]: Without dead ends: 224 [2024-11-27 23:22:47,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:22:47,878 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 254 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:47,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 314 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:22:47,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-27 23:22:47,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 212. [2024-11-27 23:22:47,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 127 states have (on average 1.68503937007874) internal successors, (214), 200 states have internal predecessors, (214), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-27 23:22:47,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 241 transitions. [2024-11-27 23:22:47,888 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 241 transitions. Word has length 8 [2024-11-27 23:22:47,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:47,889 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 241 transitions. [2024-11-27 23:22:47,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:47,889 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 241 transitions. [2024-11-27 23:22:47,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-27 23:22:47,889 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:47,890 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:47,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 23:22:48,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:48,090 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:22:48,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:48,091 INFO L85 PathProgramCache]: Analyzing trace with hash 155436533, now seen corresponding path program 1 times [2024-11-27 23:22:48,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:22:48,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [537993599] [2024-11-27 23:22:48,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:48,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:48,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:48,093 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:48,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:22:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:48,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 23:22:48,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:48,263 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:22:48,263 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 [2024-11-27 23:22:48,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:22:48,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:48,434 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:48,434 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:22:48,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537993599] [2024-11-27 23:22:48,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537993599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:48,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:48,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:22:48,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514882880] [2024-11-27 23:22:48,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:48,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:22:48,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:22:48,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:22:48,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:22:48,436 INFO L87 Difference]: Start difference. First operand 212 states and 241 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:49,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:49,180 INFO L93 Difference]: Finished difference Result 224 states and 254 transitions. [2024-11-27 23:22:49,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:22:49,181 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-27 23:22:49,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:49,183 INFO L225 Difference]: With dead ends: 224 [2024-11-27 23:22:49,183 INFO L226 Difference]: Without dead ends: 224 [2024-11-27 23:22:49,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:22:49,184 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 17 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:49,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1052 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:22:49,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-27 23:22:49,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 220. [2024-11-27 23:22:49,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 134 states have (on average 1.6567164179104477) internal successors, (222), 207 states have internal predecessors, (222), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-27 23:22:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 251 transitions. [2024-11-27 23:22:49,193 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 251 transitions. Word has length 10 [2024-11-27 23:22:49,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:49,194 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 251 transitions. [2024-11-27 23:22:49,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 251 transitions. [2024-11-27 23:22:49,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-27 23:22:49,194 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:49,194 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:49,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 23:22:49,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:49,395 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:22:49,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:49,395 INFO L85 PathProgramCache]: Analyzing trace with hash 155436534, now seen corresponding path program 1 times [2024-11-27 23:22:49,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:22:49,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858554576] [2024-11-27 23:22:49,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:49,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:49,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:49,397 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:49,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:22:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:49,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-27 23:22:49,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:49,618 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:22:49,619 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 [2024-11-27 23:22:49,632 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 [2024-11-27 23:22:49,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:22:49,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:22:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:49,965 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:49,965 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:22:49,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858554576] [2024-11-27 23:22:49,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858554576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:49,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:49,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:22:49,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424157863] [2024-11-27 23:22:49,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:49,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:22:49,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:22:49,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:22:49,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:22:49,967 INFO L87 Difference]: Start difference. First operand 220 states and 251 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:51,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:51,053 INFO L93 Difference]: Finished difference Result 226 states and 256 transitions. [2024-11-27 23:22:51,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:22:51,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-27 23:22:51,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:51,055 INFO L225 Difference]: With dead ends: 226 [2024-11-27 23:22:51,055 INFO L226 Difference]: Without dead ends: 226 [2024-11-27 23:22:51,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:22:51,056 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 26 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:51,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 971 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:22:51,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-27 23:22:51,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 220. [2024-11-27 23:22:51,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 134 states have (on average 1.6492537313432836) internal successors, (221), 207 states have internal predecessors, (221), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-27 23:22:51,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 250 transitions. [2024-11-27 23:22:51,065 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 250 transitions. Word has length 10 [2024-11-27 23:22:51,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:51,065 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 250 transitions. [2024-11-27 23:22:51,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:51,065 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 250 transitions. [2024-11-27 23:22:51,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 23:22:51,066 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:51,066 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:51,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 23:22:51,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:51,267 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:22:51,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:51,267 INFO L85 PathProgramCache]: Analyzing trace with hash 523565594, now seen corresponding path program 1 times [2024-11-27 23:22:51,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:22:51,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108034890] [2024-11-27 23:22:51,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:51,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:51,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:51,271 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:51,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:22:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:51,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:22:51,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:51,408 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:51,408 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:22:51,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108034890] [2024-11-27 23:22:51,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108034890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:51,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:51,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:22:51,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809024785] [2024-11-27 23:22:51,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:51,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:22:51,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:22:51,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:22:51,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:22:51,410 INFO L87 Difference]: Start difference. First operand 220 states and 250 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:51,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:51,962 INFO L93 Difference]: Finished difference Result 225 states and 247 transitions. [2024-11-27 23:22:51,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:22:51,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-27 23:22:51,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:51,964 INFO L225 Difference]: With dead ends: 225 [2024-11-27 23:22:51,964 INFO L226 Difference]: Without dead ends: 225 [2024-11-27 23:22:51,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:22:51,965 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 28 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:51,965 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 799 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:22:51,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-27 23:22:51,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 219. [2024-11-27 23:22:51,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 134 states have (on average 1.626865671641791) internal successors, (218), 206 states have internal predecessors, (218), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-27 23:22:51,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 247 transitions. [2024-11-27 23:22:51,979 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 247 transitions. Word has length 11 [2024-11-27 23:22:51,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:51,979 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 247 transitions. [2024-11-27 23:22:51,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:51,980 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 247 transitions. [2024-11-27 23:22:51,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 23:22:51,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:51,980 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:51,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 23:22:52,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:52,181 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:22:52,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:52,181 INFO L85 PathProgramCache]: Analyzing trace with hash 523565595, now seen corresponding path program 1 times [2024-11-27 23:22:52,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:22:52,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039228180] [2024-11-27 23:22:52,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:52,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:52,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:52,184 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:52,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:22:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:52,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 23:22:52,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:52,294 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 [2024-11-27 23:22:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:52,410 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:52,410 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:22:52,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039228180] [2024-11-27 23:22:52,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039228180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:52,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:52,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:22:52,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72785095] [2024-11-27 23:22:52,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:52,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:22:52,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:22:52,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:22:52,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:22:52,411 INFO L87 Difference]: Start difference. First operand 219 states and 247 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:53,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:53,050 INFO L93 Difference]: Finished difference Result 223 states and 245 transitions. [2024-11-27 23:22:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:22:53,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-27 23:22:53,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:53,052 INFO L225 Difference]: With dead ends: 223 [2024-11-27 23:22:53,052 INFO L226 Difference]: Without dead ends: 223 [2024-11-27 23:22:53,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:22:53,052 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 22 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:53,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 824 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:22:53,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-27 23:22:53,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2024-11-27 23:22:53,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 134 states have (on average 1.6119402985074627) internal successors, (216), 206 states have internal predecessors, (216), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-27 23:22:53,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 245 transitions. [2024-11-27 23:22:53,060 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 245 transitions. Word has length 11 [2024-11-27 23:22:53,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:53,064 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 245 transitions. [2024-11-27 23:22:53,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:53,064 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 245 transitions. [2024-11-27 23:22:53,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-27 23:22:53,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:53,065 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:53,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 23:22:53,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:53,266 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting list_addErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:22:53,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:53,266 INFO L85 PathProgramCache]: Analyzing trace with hash 635374045, now seen corresponding path program 1 times [2024-11-27 23:22:53,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:22:53,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839542744] [2024-11-27 23:22:53,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:53,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:53,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:53,269 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:53,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:22:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:53,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:22:53,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:53,403 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:53,403 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:22:53,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839542744] [2024-11-27 23:22:53,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839542744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:53,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:53,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:22:53,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143715071] [2024-11-27 23:22:53,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:53,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:22:53,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:22:53,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:22:53,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:22:53,405 INFO L87 Difference]: Start difference. First operand 219 states and 245 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:53,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:53,700 INFO L93 Difference]: Finished difference Result 218 states and 243 transitions. [2024-11-27 23:22:53,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:22:53,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-27 23:22:53,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:53,702 INFO L225 Difference]: With dead ends: 218 [2024-11-27 23:22:53,702 INFO L226 Difference]: Without dead ends: 218 [2024-11-27 23:22:53,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:22:53,703 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 5 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:53,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 515 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:22:53,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-27 23:22:53,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2024-11-27 23:22:53,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 134 states have (on average 1.5970149253731343) internal successors, (214), 205 states have internal predecessors, (214), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-27 23:22:53,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 243 transitions. [2024-11-27 23:22:53,711 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 243 transitions. Word has length 13 [2024-11-27 23:22:53,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:53,711 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 243 transitions. [2024-11-27 23:22:53,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:53,711 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 243 transitions. [2024-11-27 23:22:53,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-27 23:22:53,712 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:53,712 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:53,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 23:22:53,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:53,916 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting list_addErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:22:53,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:53,917 INFO L85 PathProgramCache]: Analyzing trace with hash 635374046, now seen corresponding path program 1 times [2024-11-27 23:22:53,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:22:53,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592374911] [2024-11-27 23:22:53,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:53,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:53,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:53,919 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:53,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:22:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:54,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:22:54,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:54,117 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:54,117 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:22:54,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592374911] [2024-11-27 23:22:54,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592374911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:54,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:54,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:22:54,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853608995] [2024-11-27 23:22:54,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:54,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:22:54,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:22:54,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:22:54,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:22:54,119 INFO L87 Difference]: Start difference. First operand 218 states and 243 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:54,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:54,708 INFO L93 Difference]: Finished difference Result 220 states and 242 transitions. [2024-11-27 23:22:54,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:22:54,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-27 23:22:54,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:54,711 INFO L225 Difference]: With dead ends: 220 [2024-11-27 23:22:54,711 INFO L226 Difference]: Without dead ends: 220 [2024-11-27 23:22:54,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:22:54,711 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 239 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:54,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 900 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:22:54,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-27 23:22:54,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2024-11-27 23:22:54,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 134 states have (on average 1.5895522388059702) internal successors, (213), 205 states have internal predecessors, (213), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-27 23:22:54,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 242 transitions. [2024-11-27 23:22:54,719 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 242 transitions. Word has length 13 [2024-11-27 23:22:54,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:54,719 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 242 transitions. [2024-11-27 23:22:54,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:54,720 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 242 transitions. [2024-11-27 23:22:54,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-27 23:22:54,720 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:54,721 INFO L218 NwaCegarLoop]: 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] [2024-11-27 23:22:54,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 23:22:54,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:54,921 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting inspectErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:22:54,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:54,922 INFO L85 PathProgramCache]: Analyzing trace with hash 137097922, now seen corresponding path program 1 times [2024-11-27 23:22:54,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:22:54,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388516170] [2024-11-27 23:22:54,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:54,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:54,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:54,924 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:54,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 23:22:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:55,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:22:55,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:55,151 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:55,151 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:22:55,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388516170] [2024-11-27 23:22:55,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388516170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:55,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:55,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:22:55,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767229768] [2024-11-27 23:22:55,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:55,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:22:55,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:22:55,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:22:55,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:22:55,153 INFO L87 Difference]: Start difference. First operand 218 states and 242 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:22:55,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:55,928 INFO L93 Difference]: Finished difference Result 213 states and 237 transitions. [2024-11-27 23:22:55,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:22:55,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-27 23:22:55,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:55,930 INFO L225 Difference]: With dead ends: 213 [2024-11-27 23:22:55,930 INFO L226 Difference]: Without dead ends: 213 [2024-11-27 23:22:55,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:22:55,931 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 364 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:55,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 440 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:22:55,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-27 23:22:55,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2024-11-27 23:22:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 134 states have (on average 1.5522388059701493) internal successors, (208), 200 states have internal predecessors, (208), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-27 23:22:55,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 237 transitions. [2024-11-27 23:22:55,943 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 237 transitions. Word has length 27 [2024-11-27 23:22:55,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:55,944 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 237 transitions. [2024-11-27 23:22:55,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:22:55,945 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 237 transitions. [2024-11-27 23:22:55,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-27 23:22:55,945 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:55,946 INFO L218 NwaCegarLoop]: 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] [2024-11-27 23:22:55,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 23:22:56,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:56,147 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting inspectErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:22:56,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:56,147 INFO L85 PathProgramCache]: Analyzing trace with hash 137097923, now seen corresponding path program 1 times [2024-11-27 23:22:56,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:22:56,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928073711] [2024-11-27 23:22:56,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:56,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:56,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:56,149 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:56,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 23:22:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:56,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 23:22:56,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:56,505 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:56,505 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:22:56,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928073711] [2024-11-27 23:22:56,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928073711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:56,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:56,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:22:56,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811619189] [2024-11-27 23:22:56,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:56,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:22:56,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:22:56,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:22:56,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:22:56,506 INFO L87 Difference]: Start difference. First operand 213 states and 237 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:22:57,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:57,581 INFO L93 Difference]: Finished difference Result 212 states and 236 transitions. [2024-11-27 23:22:57,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:22:57,582 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-27 23:22:57,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:57,583 INFO L225 Difference]: With dead ends: 212 [2024-11-27 23:22:57,583 INFO L226 Difference]: Without dead ends: 212 [2024-11-27 23:22:57,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:22:57,584 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 304 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:57,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 495 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:22:57,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-27 23:22:57,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2024-11-27 23:22:57,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 134 states have (on average 1.544776119402985) internal successors, (207), 199 states have internal predecessors, (207), 22 states have call successors, (22), 6 states have call predecessors, (22), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-27 23:22:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 236 transitions. [2024-11-27 23:22:57,593 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 236 transitions. Word has length 27 [2024-11-27 23:22:57,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:57,594 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 236 transitions. [2024-11-27 23:22:57,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:22:57,594 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 236 transitions. [2024-11-27 23:22:57,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-27 23:22:57,597 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:57,597 INFO L218 NwaCegarLoop]: 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, 1, 1] [2024-11-27 23:22:57,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 23:22:57,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:57,798 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:22:57,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:57,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1380015952, now seen corresponding path program 1 times [2024-11-27 23:22:57,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:22:57,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093149415] [2024-11-27 23:22:57,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:57,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:57,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:57,802 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:57,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 23:22:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:57,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:22:57,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:58,004 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:58,004 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:22:58,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093149415] [2024-11-27 23:22:58,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093149415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:58,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:58,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:22:58,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040063032] [2024-11-27 23:22:58,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:58,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:22:58,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:22:58,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:22:58,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:22:58,006 INFO L87 Difference]: Start difference. First operand 212 states and 236 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:22:58,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:58,197 INFO L93 Difference]: Finished difference Result 211 states and 234 transitions. [2024-11-27 23:22:58,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:22:58,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-27 23:22:58,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:58,199 INFO L225 Difference]: With dead ends: 211 [2024-11-27 23:22:58,199 INFO L226 Difference]: Without dead ends: 211 [2024-11-27 23:22:58,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:22:58,200 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 280 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:58,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 450 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:22:58,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-27 23:22:58,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2024-11-27 23:22:58,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 134 states have (on average 1.537313432835821) internal successors, (206), 198 states have internal predecessors, (206), 21 states have call successors, (21), 6 states have call predecessors, (21), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-27 23:22:58,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 234 transitions. [2024-11-27 23:22:58,207 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 234 transitions. Word has length 29 [2024-11-27 23:22:58,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:58,208 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 234 transitions. [2024-11-27 23:22:58,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:22:58,208 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 234 transitions. [2024-11-27 23:22:58,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-27 23:22:58,208 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:58,209 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:58,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-27 23:22:58,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:58,409 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:22:58,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:58,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1886284203, now seen corresponding path program 1 times [2024-11-27 23:22:58,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:22:58,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [321432232] [2024-11-27 23:22:58,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:58,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:58,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:58,413 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:58,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 23:22:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:58,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-27 23:22:58,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:58,632 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-27 23:22:58,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-27 23:22:59,184 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 [2024-11-27 23:22:59,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:22:59,479 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-27 23:22:59,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-27 23:22:59,707 INFO L349 Elim1Store]: treesize reduction 98, result has 30.0 percent of original size [2024-11-27 23:22:59,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 60 [2024-11-27 23:22:59,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2024-11-27 23:23:00,078 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 27 treesize of output 15 [2024-11-27 23:23:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:00,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:00,597 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_432 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_433 (_ BitVec 1)) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_17| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_17|))) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_17| v_ArrVal_433) (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_432) |v_ULTIMATE.start_gl_insert_~node~1#1.base_17| v_ArrVal_434) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))) is different from false [2024-11-27 23:23:00,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:23:00,760 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2024-11-27 23:23:00,766 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 23:23:00,769 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 44 treesize of output 36 [2024-11-27 23:23:00,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-27 23:23:01,074 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:23:01,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321432232] [2024-11-27 23:23:01,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321432232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:01,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [660061103] [2024-11-27 23:23:01,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:01,075 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 23:23:01,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 23:23:01,088 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 23:23:01,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-27 23:23:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:01,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-27 23:23:01,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:01,749 INFO L349 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2024-11-27 23:23:01,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2024-11-27 23:23:02,771 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 [2024-11-27 23:23:03,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:23:03,255 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-27 23:23:03,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2024-11-27 23:23:03,640 INFO L349 Elim1Store]: treesize reduction 122, result has 30.3 percent of original size [2024-11-27 23:23:03,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 46 treesize of output 76 [2024-11-27 23:23:03,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 33 [2024-11-27 23:23:04,226 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 35 treesize of output 19 [2024-11-27 23:23:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:04,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:04,510 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_510 (_ BitVec 1)) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_21| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_21|))) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_21| v_ArrVal_510) (select (select (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_21| v_ArrVal_434) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))) is different from false [2024-11-27 23:23:04,562 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_434 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_510 (_ BitVec 1)) (v_ArrVal_509 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_21| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_21| v_ArrVal_510) (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_509) |v_ULTIMATE.start_gl_insert_~node~1#1.base_21| v_ArrVal_434) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_21|))))) is different from false [2024-11-27 23:23:04,696 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:23:04,697 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2024-11-27 23:23:04,700 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 23:23:04,702 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 44 treesize of output 36 [2024-11-27 23:23:04,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-27 23:23:04,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [660061103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:04,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:23:04,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2024-11-27 23:23:04,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571358719] [2024-11-27 23:23:04,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:04,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 23:23:04,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:23:04,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 23:23:04,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1213, Unknown=20, NotChecked=222, Total=1640 [2024-11-27 23:23:04,898 INFO L87 Difference]: Start difference. First operand 211 states and 234 transitions. Second operand has 30 states, 29 states have (on average 1.793103448275862) internal successors, (52), 25 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 23:23:10,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:23:10,412 INFO L93 Difference]: Finished difference Result 376 states and 415 transitions. [2024-11-27 23:23:10,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:23:10,412 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.793103448275862) internal successors, (52), 25 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2024-11-27 23:23:10,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:23:10,414 INFO L225 Difference]: With dead ends: 376 [2024-11-27 23:23:10,414 INFO L226 Difference]: Without dead ends: 376 [2024-11-27 23:23:10,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=296, Invalid=1588, Unknown=20, NotChecked=258, Total=2162 [2024-11-27 23:23:10,416 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 1111 mSDsluCounter, 2007 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:23:10,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 2152 Invalid, 2077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-27 23:23:10,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-27 23:23:10,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 290. [2024-11-27 23:23:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 208 states have (on average 1.5625) internal successors, (325), 273 states have internal predecessors, (325), 24 states have call successors, (24), 8 states have call predecessors, (24), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-27 23:23:10,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 359 transitions. [2024-11-27 23:23:10,429 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 359 transitions. Word has length 29 [2024-11-27 23:23:10,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:23:10,430 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 359 transitions. [2024-11-27 23:23:10,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.793103448275862) internal successors, (52), 25 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 23:23:10,430 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 359 transitions. [2024-11-27 23:23:10,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-27 23:23:10,431 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:10,431 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:10,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-27 23:23:10,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2024-11-27 23:23:10,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-27 23:23:10,832 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:23:10,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:10,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1886284202, now seen corresponding path program 1 times [2024-11-27 23:23:10,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:23:10,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480131910] [2024-11-27 23:23:10,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:10,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:10,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:10,835 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:10,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 23:23:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:11,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-27 23:23:11,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:11,098 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 [2024-11-27 23:23:11,129 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-27 23:23:11,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-27 23:23:11,723 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 [2024-11-27 23:23:11,731 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 [2024-11-27 23:23:11,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:23:12,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:23:12,066 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-27 23:23:12,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 54 [2024-11-27 23:23:12,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 11 [2024-11-27 23:23:12,327 INFO L349 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2024-11-27 23:23:12,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2024-11-27 23:23:12,341 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-27 23:23:12,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2024-11-27 23:23:12,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-11-27 23:23:12,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:23:12,696 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 [2024-11-27 23:23:12,808 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:12,809 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:13,633 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_gl_insert_~node~1#1.base_25| (_ BitVec 32))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25|) (_ bv0 1))) (forall ((v_ArrVal_591 (_ BitVec 32)) (v_ArrVal_592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_593 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25| v_ArrVal_592) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select (store |c_#length| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25| v_ArrVal_591) (select (select (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25| v_ArrVal_593) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))) (forall ((|v_ULTIMATE.start_gl_insert_~node~1#1.base_25| (_ BitVec 32))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25|) (_ bv0 1))) (forall ((v_ArrVal_592 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25| v_ArrVal_592) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0))))))) is different from false [2024-11-27 23:23:14,882 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:23:14,882 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 38 [2024-11-27 23:23:14,888 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 23:23:14,891 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 46 treesize of output 34 [2024-11-27 23:23:14,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:23:14,930 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2024-11-27 23:23:14,935 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 23:23:14,939 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 84 treesize of output 76 [2024-11-27 23:23:14,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:23:14,965 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 62 [2024-11-27 23:23:14,972 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 23:23:14,976 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 96 treesize of output 84 [2024-11-27 23:23:14,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-27 23:23:15,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-27 23:23:15,557 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:23:15,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480131910] [2024-11-27 23:23:15,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480131910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:15,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1949239333] [2024-11-27 23:23:15,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:15,558 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 23:23:15,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 23:23:15,559 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 23:23:15,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-27 23:23:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:16,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-27 23:23:16,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:16,454 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 [2024-11-27 23:23:16,514 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-27 23:23:16,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-27 23:23:18,080 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 [2024-11-27 23:23:18,097 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 [2024-11-27 23:23:18,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:23:18,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:23:18,921 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-27 23:23:18,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 54 [2024-11-27 23:23:18,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 11 [2024-11-27 23:23:19,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:23:19,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:23:19,467 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-27 23:23:19,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2024-11-27 23:23:19,559 INFO L349 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2024-11-27 23:23:19,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2024-11-27 23:23:19,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:23:19,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-11-27 23:23:20,538 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 [2024-11-27 23:23:20,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:20,633 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:21,184 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_gl_insert_~node~1#1.base_29| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_29|))) (forall ((v_ArrVal_592 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_29| v_ArrVal_592) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))))) (forall ((|v_ULTIMATE.start_gl_insert_~node~1#1.base_29| (_ BitVec 32))) (or (forall ((v_ArrVal_592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_674 (_ BitVec 32))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_29| v_ArrVal_592) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv8 32)) (select (store |c_#length| |v_ULTIMATE.start_gl_insert_~node~1#1.base_29| v_ArrVal_674) (select (select (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_29| v_ArrVal_593) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_29|)))))) is different from false [2024-11-27 23:23:28,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:23:28,573 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 38 [2024-11-27 23:23:28,595 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 23:23:28,610 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 46 treesize of output 34 [2024-11-27 23:23:28,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 23:23:28,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:23:28,805 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2024-11-27 23:23:28,828 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 23:23:28,848 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 84 treesize of output 76 [2024-11-27 23:23:28,934 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:23:28,935 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 62 [2024-11-27 23:23:28,964 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 23:23:28,985 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 96 treesize of output 84 [2024-11-27 23:23:29,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-27 23:23:29,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-27 23:23:30,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1949239333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:30,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:23:30,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2024-11-27 23:23:30,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067878609] [2024-11-27 23:23:30,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:30,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 23:23:30,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:23:30,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 23:23:30,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1280, Unknown=34, NotChecked=150, Total=1640 [2024-11-27 23:23:30,525 INFO L87 Difference]: Start difference. First operand 290 states and 359 transitions. Second operand has 30 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 23:24:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:18,977 INFO L93 Difference]: Finished difference Result 375 states and 414 transitions. [2024-11-27 23:24:18,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:24:18,978 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2024-11-27 23:24:18,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:18,980 INFO L225 Difference]: With dead ends: 375 [2024-11-27 23:24:18,980 INFO L226 Difference]: Without dead ends: 375 [2024-11-27 23:24:18,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=309, Invalid=1735, Unknown=34, NotChecked=178, Total=2256 [2024-11-27 23:24:18,982 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 798 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 2592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:18,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 1874 Invalid, 2592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 42.5s Time] [2024-11-27 23:24:18,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-27 23:24:18,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 282. [2024-11-27 23:24:18,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 201 states have (on average 1.5771144278606966) internal successors, (317), 266 states have internal predecessors, (317), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 23:24:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 349 transitions. [2024-11-27 23:24:18,995 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 349 transitions. Word has length 29 [2024-11-27 23:24:18,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:18,996 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 349 transitions. [2024-11-27 23:24:18,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 23:24:18,996 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 349 transitions. [2024-11-27 23:24:18,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-27 23:24:18,997 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:18,997 INFO L218 NwaCegarLoop]: 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, 1, 1, 1] [2024-11-27 23:24:19,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-27 23:24:19,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-11-27 23:24:19,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-27 23:24:19,401 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting inspectErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:24:19,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:19,402 INFO L85 PathProgramCache]: Analyzing trace with hash -229687113, now seen corresponding path program 1 times [2024-11-27 23:24:19,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:24:19,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587818963] [2024-11-27 23:24:19,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:19,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:19,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:19,404 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:19,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 23:24:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:19,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 23:24:19,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:20,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:24:20,086 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 [2024-11-27 23:24:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:23,250 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:23,250 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:24:23,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587818963] [2024-11-27 23:24:23,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587818963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:23,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:23,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:24:23,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847812166] [2024-11-27 23:24:23,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:23,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:24:23,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:24:23,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:24:23,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:24:23,252 INFO L87 Difference]: Start difference. First operand 282 states and 349 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:24:28,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:28,827 INFO L93 Difference]: Finished difference Result 280 states and 345 transitions. [2024-11-27 23:24:28,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:24:28,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2024-11-27 23:24:28,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:28,830 INFO L225 Difference]: With dead ends: 280 [2024-11-27 23:24:28,830 INFO L226 Difference]: Without dead ends: 280 [2024-11-27 23:24:28,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:24:28,831 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 290 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:28,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 224 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-27 23:24:28,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-27 23:24:28,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2024-11-27 23:24:28,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 201 states have (on average 1.5572139303482586) internal successors, (313), 264 states have internal predecessors, (313), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 23:24:28,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 345 transitions. [2024-11-27 23:24:28,845 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 345 transitions. Word has length 30 [2024-11-27 23:24:28,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:28,845 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 345 transitions. [2024-11-27 23:24:28,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:24:28,846 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 345 transitions. [2024-11-27 23:24:28,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-27 23:24:28,848 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:28,848 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1] [2024-11-27 23:24:28,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-27 23:24:29,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:29,049 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:24:29,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:29,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1673703486, now seen corresponding path program 1 times [2024-11-27 23:24:29,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:24:29,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328784924] [2024-11-27 23:24:29,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:29,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:29,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:29,054 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:29,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 23:24:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:29,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-27 23:24:29,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:29,782 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:24:29,782 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 [2024-11-27 23:24:31,945 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 [2024-11-27 23:24:32,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:24:33,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:24:34,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:34,871 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:34,871 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:24:34,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328784924] [2024-11-27 23:24:34,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328784924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:34,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:34,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-27 23:24:34,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582883311] [2024-11-27 23:24:34,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:34,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 23:24:34,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:24:34,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 23:24:34,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:24:34,873 INFO L87 Difference]: Start difference. First operand 280 states and 345 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 10 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:24:56,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:56,777 INFO L93 Difference]: Finished difference Result 353 states and 391 transitions. [2024-11-27 23:24:56,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:24:56,778 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 10 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2024-11-27 23:24:56,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:56,780 INFO L225 Difference]: With dead ends: 353 [2024-11-27 23:24:56,780 INFO L226 Difference]: Without dead ends: 353 [2024-11-27 23:24:56,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2024-11-27 23:24:56,781 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 587 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:56,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 1126 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 17.7s Time] [2024-11-27 23:24:56,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-11-27 23:24:56,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 280. [2024-11-27 23:24:56,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 201 states have (on average 1.5522388059701493) internal successors, (312), 264 states have internal predecessors, (312), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 23:24:56,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 344 transitions. [2024-11-27 23:24:56,793 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 344 transitions. Word has length 32 [2024-11-27 23:24:56,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:56,793 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 344 transitions. [2024-11-27 23:24:56,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 10 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:24:56,793 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 344 transitions. [2024-11-27 23:24:56,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-27 23:24:56,794 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:56,794 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:56,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-27 23:24:56,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:56,998 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:24:56,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:56,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1767280479, now seen corresponding path program 1 times [2024-11-27 23:24:56,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:24:56,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429314400] [2024-11-27 23:24:56,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:56,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:56,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:57,001 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:57,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 23:24:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:57,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-27 23:24:57,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:57,965 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:24:57,966 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 [2024-11-27 23:24:58,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:24:58,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:25:04,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2024-11-27 23:25:04,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:25:04,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 15 [2024-11-27 23:25:04,487 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 17 treesize of output 18 [2024-11-27 23:25:05,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-27 23:25:05,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-27 23:25:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:08,862 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:08,862 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:25:08,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429314400] [2024-11-27 23:25:08,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429314400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:08,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:08,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:25:08,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073359016] [2024-11-27 23:25:08,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:08,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 23:25:08,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:25:08,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 23:25:08,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=234, Unknown=2, NotChecked=0, Total=272 [2024-11-27 23:25:08,864 INFO L87 Difference]: Start difference. First operand 280 states and 344 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:25:45,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:45,763 INFO L93 Difference]: Finished difference Result 447 states and 529 transitions. [2024-11-27 23:25:45,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:25:45,763 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2024-11-27 23:25:45,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:45,766 INFO L225 Difference]: With dead ends: 447 [2024-11-27 23:25:45,766 INFO L226 Difference]: Without dead ends: 447 [2024-11-27 23:25:45,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=92, Invalid=554, Unknown=4, NotChecked=0, Total=650 [2024-11-27 23:25:45,766 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 348 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 34 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:45,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1061 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1975 Invalid, 4 Unknown, 0 Unchecked, 31.8s Time] [2024-11-27 23:25:45,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2024-11-27 23:25:45,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 381. [2024-11-27 23:25:45,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 294 states have (on average 1.5238095238095237) internal successors, (448), 358 states have internal predecessors, (448), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 23:25:45,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 490 transitions. [2024-11-27 23:25:45,781 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 490 transitions. Word has length 35 [2024-11-27 23:25:45,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:45,781 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 490 transitions. [2024-11-27 23:25:45,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:25:45,782 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 490 transitions. [2024-11-27 23:25:45,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-27 23:25:45,782 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:45,782 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:45,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-27 23:25:45,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:45,986 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting inspectErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:25:45,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:45,987 INFO L85 PathProgramCache]: Analyzing trace with hash -198459931, now seen corresponding path program 1 times [2024-11-27 23:25:45,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:25:45,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313000094] [2024-11-27 23:25:45,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:45,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:45,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:45,989 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:45,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-27 23:25:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:46,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-27 23:25:46,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:47,055 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-27 23:25:47,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-27 23:25:47,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:25:47,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:25:54,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2024-11-27 23:25:54,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 43 [2024-11-27 23:25:55,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:25:55,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 12 [2024-11-27 23:25:55,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2024-11-27 23:25:57,478 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-27 23:25:57,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 42 [2024-11-27 23:26:03,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2024-11-27 23:26:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:05,201 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:26:05,201 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:26:05,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313000094] [2024-11-27 23:26:05,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313000094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:05,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:05,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:26:05,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237961141] [2024-11-27 23:26:05,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:05,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:26:05,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:26:05,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:26:05,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=258, Unknown=9, NotChecked=0, Total=306 [2024-11-27 23:26:05,203 INFO L87 Difference]: Start difference. First operand 381 states and 490 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:26:53,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:53,113 INFO L93 Difference]: Finished difference Result 446 states and 528 transitions. [2024-11-27 23:26:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:26:53,113 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2024-11-27 23:26:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:53,116 INFO L225 Difference]: With dead ends: 446 [2024-11-27 23:26:53,116 INFO L226 Difference]: Without dead ends: 446 [2024-11-27 23:26:53,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=97, Invalid=587, Unknown=18, NotChecked=0, Total=702 [2024-11-27 23:26:53,117 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 403 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 34 mSolverCounterUnsat, 140 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 140 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:53,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 935 Invalid, 2502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2328 Invalid, 140 Unknown, 0 Unchecked, 42.4s Time] [2024-11-27 23:26:53,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-27 23:26:53,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 381. [2024-11-27 23:26:53,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 294 states have (on average 1.5204081632653061) internal successors, (447), 358 states have internal predecessors, (447), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 23:26:53,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 489 transitions. [2024-11-27 23:26:53,130 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 489 transitions. Word has length 37 [2024-11-27 23:26:53,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:53,131 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 489 transitions. [2024-11-27 23:26:53,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:26:53,131 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 489 transitions. [2024-11-27 23:26:53,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-27 23:26:53,132 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:53,132 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:53,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-27 23:26:53,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:53,333 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting inspectErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:26:53,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:53,333 INFO L85 PathProgramCache]: Analyzing trace with hash -198459930, now seen corresponding path program 1 times [2024-11-27 23:26:53,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:26:53,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1312410650] [2024-11-27 23:26:53,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:53,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:53,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:26:53,335 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:26:53,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-27 23:26:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:53,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-27 23:26:53,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:26:54,034 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 [2024-11-27 23:26:54,279 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:26:54,279 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 [2024-11-27 23:26:54,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:26:55,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:27:02,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2024-11-27 23:27:02,666 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 43 [2024-11-27 23:27:02,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2024-11-27 23:27:02,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:27:02,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 15 [2024-11-27 23:27:02,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 18 [2024-11-27 23:27:03,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:27:03,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 12 [2024-11-27 23:27:03,968 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 0 case distinctions, treesize of input 19 treesize of output 21 [2024-11-27 23:27:04,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-27 23:27:07,393 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-27 23:27:07,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 52 [2024-11-27 23:27:07,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 16 [2024-11-27 23:27:13,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-27 23:27:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:14,991 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:27:14,991 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:27:14,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312410650] [2024-11-27 23:27:14,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312410650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:14,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:14,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:27:14,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437634552] [2024-11-27 23:27:14,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:14,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:27:14,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:27:14,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:27:14,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=256, Unknown=9, NotChecked=0, Total=306 [2024-11-27 23:27:14,993 INFO L87 Difference]: Start difference. First operand 381 states and 489 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:28:04,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:04,904 INFO L93 Difference]: Finished difference Result 442 states and 523 transitions. [2024-11-27 23:28:04,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:28:04,906 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2024-11-27 23:28:04,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:04,908 INFO L225 Difference]: With dead ends: 442 [2024-11-27 23:28:04,908 INFO L226 Difference]: Without dead ends: 442 [2024-11-27 23:28:04,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=103, Invalid=637, Unknown=16, NotChecked=0, Total=756 [2024-11-27 23:28:04,909 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 387 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 36 mSolverCounterUnsat, 55 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 2507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 55 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:04,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 925 Invalid, 2507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2416 Invalid, 55 Unknown, 0 Unchecked, 43.5s Time] [2024-11-27 23:28:04,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-11-27 23:28:04,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 381. [2024-11-27 23:28:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 294 states have (on average 1.5068027210884354) internal successors, (443), 358 states have internal predecessors, (443), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 23:28:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 485 transitions. [2024-11-27 23:28:04,921 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 485 transitions. Word has length 37 [2024-11-27 23:28:04,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:04,921 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 485 transitions. [2024-11-27 23:28:04,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:28:04,921 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 485 transitions. [2024-11-27 23:28:04,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-27 23:28:04,922 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:04,922 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:04,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-27 23:28:05,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:05,123 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:28:05,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:05,123 INFO L85 PathProgramCache]: Analyzing trace with hash -21711750, now seen corresponding path program 1 times [2024-11-27 23:28:05,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:28:05,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519912995] [2024-11-27 23:28:05,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:05,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:05,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:05,125 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:05,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-27 23:28:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:05,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-27 23:28:05,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:05,911 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:28:05,912 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 [2024-11-27 23:28:05,973 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 5 [2024-11-27 23:28:06,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:28:06,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:28:18,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 61 [2024-11-27 23:28:18,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 74 [2024-11-27 23:28:18,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2024-11-27 23:28:18,378 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 43 [2024-11-27 23:28:18,548 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-27 23:28:18,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 23:28:19,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:28:19,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 12 [2024-11-27 23:28:19,513 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 0 case distinctions, treesize of input 19 treesize of output 21 [2024-11-27 23:28:19,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:28:19,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 31 treesize of output 29 [2024-11-27 23:28:19,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 22 [2024-11-27 23:28:19,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2024-11-27 23:28:20,854 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-27 23:28:20,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 96 treesize of output 70 [2024-11-27 23:28:20,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 16 [2024-11-27 23:28:30,708 INFO L349 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2024-11-27 23:28:30,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 86 treesize of output 32 [2024-11-27 23:28:31,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:31,480 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:28:31,480 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:28:31,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519912995] [2024-11-27 23:28:31,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519912995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:31,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:31,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-27 23:28:31,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519496619] [2024-11-27 23:28:31,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:31,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 23:28:31,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:28:31,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 23:28:31,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=338, Unknown=1, NotChecked=0, Total=380 [2024-11-27 23:28:31,482 INFO L87 Difference]: Start difference. First operand 381 states and 485 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 16 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:29:36,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:36,641 INFO L93 Difference]: Finished difference Result 441 states and 521 transitions. [2024-11-27 23:29:36,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 23:29:36,642 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 16 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2024-11-27 23:29:36,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:36,644 INFO L225 Difference]: With dead ends: 441 [2024-11-27 23:29:36,644 INFO L226 Difference]: Without dead ends: 441 [2024-11-27 23:29:36,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=103, Invalid=825, Unknown=2, NotChecked=0, Total=930 [2024-11-27 23:29:36,647 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 292 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:36,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1907 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2143 Invalid, 3 Unknown, 0 Unchecked, 57.8s Time] [2024-11-27 23:29:36,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2024-11-27 23:29:36,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 381. [2024-11-27 23:29:36,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 294 states have (on average 1.5034013605442176) internal successors, (442), 358 states have internal predecessors, (442), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 23:29:36,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 484 transitions. [2024-11-27 23:29:36,658 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 484 transitions. Word has length 42 [2024-11-27 23:29:36,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:36,658 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 484 transitions. [2024-11-27 23:29:36,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 16 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:29:36,658 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 484 transitions. [2024-11-27 23:29:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-27 23:29:36,660 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:36,661 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:36,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-27 23:29:36,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:36,861 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:29:36,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:36,862 INFO L85 PathProgramCache]: Analyzing trace with hash -567506114, now seen corresponding path program 1 times [2024-11-27 23:29:36,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:36,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269483856] [2024-11-27 23:29:36,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:36,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:36,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:36,864 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:36,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-27 23:29:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:37,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-27 23:29:37,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:37,557 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 [2024-11-27 23:29:37,733 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:29:37,733 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 [2024-11-27 23:29:38,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:29:38,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:29:43,497 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2024-11-27 23:29:49,005 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-27 23:29:49,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 23:29:49,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2024-11-27 23:29:49,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:29:49,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 15 [2024-11-27 23:29:49,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 18 [2024-11-27 23:29:49,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2024-11-27 23:29:49,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:29:49,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 15 [2024-11-27 23:29:49,386 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 17 treesize of output 18 [2024-11-27 23:29:50,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-27 23:29:50,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2024-11-27 23:29:50,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 35 [2024-11-27 23:29:50,654 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-27 23:29:50,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 42 [2024-11-27 23:29:55,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2024-11-27 23:29:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:57,977 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:57,977 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:57,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269483856] [2024-11-27 23:29:57,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269483856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:57,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:57,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-27 23:29:57,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220909339] [2024-11-27 23:29:57,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:57,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:29:57,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:57,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:29:57,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:29:57,979 INFO L87 Difference]: Start difference. First operand 381 states and 484 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 16 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:30:07,906 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 [0] [2024-11-27 23:30:40,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:40,246 INFO L93 Difference]: Finished difference Result 440 states and 519 transitions. [2024-11-27 23:30:40,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 23:30:40,247 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 16 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-11-27 23:30:40,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:40,249 INFO L225 Difference]: With dead ends: 440 [2024-11-27 23:30:40,249 INFO L226 Difference]: Without dead ends: 440 [2024-11-27 23:30:40,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2024-11-27 23:30:40,250 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 286 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:40,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1686 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1840 Invalid, 2 Unknown, 0 Unchecked, 36.8s Time] [2024-11-27 23:30:40,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-27 23:30:40,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 381. [2024-11-27 23:30:40,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 294 states have (on average 1.5) internal successors, (441), 358 states have internal predecessors, (441), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 23:30:40,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 483 transitions. [2024-11-27 23:30:40,262 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 483 transitions. Word has length 45 [2024-11-27 23:30:40,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:40,263 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 483 transitions. [2024-11-27 23:30:40,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 16 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:30:40,263 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 483 transitions. [2024-11-27 23:30:40,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-27 23:30:40,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:40,264 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:40,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-27 23:30:40,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:40,465 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting inspectErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:30:40,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:40,465 INFO L85 PathProgramCache]: Analyzing trace with hash -718871062, now seen corresponding path program 1 times [2024-11-27 23:30:40,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:30:40,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895215339] [2024-11-27 23:30:40,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:40,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:40,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:40,467 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:30:40,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-27 23:30:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:40,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:30:40,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:30:41,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:41,042 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:30:41,042 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:30:41,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895215339] [2024-11-27 23:30:41,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895215339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:41,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:30:41,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:30:41,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82344464] [2024-11-27 23:30:41,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:41,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:30:41,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:30:41,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:30:41,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:30:41,043 INFO L87 Difference]: Start difference. First operand 381 states and 483 transitions. Second operand has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:30:44,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:44,010 INFO L93 Difference]: Finished difference Result 375 states and 465 transitions. [2024-11-27 23:30:44,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:30:44,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2024-11-27 23:30:44,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:44,012 INFO L225 Difference]: With dead ends: 375 [2024-11-27 23:30:44,012 INFO L226 Difference]: Without dead ends: 375 [2024-11-27 23:30:44,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:30:44,014 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 111 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:44,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 302 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-27 23:30:44,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-27 23:30:44,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2024-11-27 23:30:44,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 294 states have (on average 1.4387755102040816) internal successors, (423), 352 states have internal predecessors, (423), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 23:30:44,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 465 transitions. [2024-11-27 23:30:44,026 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 465 transitions. Word has length 46 [2024-11-27 23:30:44,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:44,027 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 465 transitions. [2024-11-27 23:30:44,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:30:44,027 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 465 transitions. [2024-11-27 23:30:44,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-27 23:30:44,027 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:44,028 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:44,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-27 23:30:44,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:44,228 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting inspectErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:30:44,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:44,228 INFO L85 PathProgramCache]: Analyzing trace with hash -718871061, now seen corresponding path program 1 times [2024-11-27 23:30:44,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:30:44,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [460058147] [2024-11-27 23:30:44,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:44,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:44,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:44,230 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:30:44,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-27 23:30:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:44,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-27 23:30:44,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:30:44,877 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 5 [2024-11-27 23:30:45,072 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:30:45,072 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 [2024-11-27 23:30:45,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:30:45,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:30:53,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2024-11-27 23:30:53,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:30:53,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 15 [2024-11-27 23:30:53,714 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 17 treesize of output 18 [2024-11-27 23:30:53,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2024-11-27 23:30:53,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2024-11-27 23:30:54,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-27 23:30:55,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:30:55,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 12 [2024-11-27 23:30:55,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2024-11-27 23:30:56,153 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-27 23:30:56,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 52 [2024-11-27 23:30:56,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 16 [2024-11-27 23:31:02,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-27 23:31:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:06,544 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:06,545 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:31:06,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460058147] [2024-11-27 23:31:06,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460058147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:06,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:06,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-27 23:31:06,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549993066] [2024-11-27 23:31:06,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:06,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:31:06,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:31:06,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:31:06,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=292, Unknown=7, NotChecked=0, Total=342 [2024-11-27 23:31:06,546 INFO L87 Difference]: Start difference. First operand 375 states and 465 transitions. Second operand has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:31:57,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:57,038 INFO L93 Difference]: Finished difference Result 421 states and 493 transitions. [2024-11-27 23:31:57,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 23:31:57,039 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2024-11-27 23:31:57,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:57,041 INFO L225 Difference]: With dead ends: 421 [2024-11-27 23:31:57,041 INFO L226 Difference]: Without dead ends: 421 [2024-11-27 23:31:57,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=124, Invalid=794, Unknown=12, NotChecked=0, Total=930 [2024-11-27 23:31:57,042 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 374 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 34 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:57,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 1098 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2246 Invalid, 21 Unknown, 0 Unchecked, 41.8s Time] [2024-11-27 23:31:57,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-27 23:31:57,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 375. [2024-11-27 23:31:57,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 294 states have (on average 1.4149659863945578) internal successors, (416), 352 states have internal predecessors, (416), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 23:31:57,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 458 transitions. [2024-11-27 23:31:57,054 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 458 transitions. Word has length 46 [2024-11-27 23:31:57,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:57,054 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 458 transitions. [2024-11-27 23:31:57,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:31:57,054 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 458 transitions. [2024-11-27 23:31:57,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-27 23:31:57,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:57,055 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:57,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-27 23:31:57,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:57,256 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:31:57,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:57,256 INFO L85 PathProgramCache]: Analyzing trace with hash 663963244, now seen corresponding path program 1 times [2024-11-27 23:31:57,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:31:57,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906029380] [2024-11-27 23:31:57,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:57,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:57,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:57,258 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:57,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-27 23:31:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:57,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:31:57,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:57,598 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 11 [2024-11-27 23:31:58,727 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:31:58,727 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 [2024-11-27 23:31:59,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:59,136 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:59,136 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:31:59,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906029380] [2024-11-27 23:31:59,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906029380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:59,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:59,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:31:59,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623495749] [2024-11-27 23:31:59,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:59,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:31:59,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:31:59,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:31:59,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:31:59,138 INFO L87 Difference]: Start difference. First operand 375 states and 458 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:32:02,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:02,558 INFO L93 Difference]: Finished difference Result 374 states and 454 transitions. [2024-11-27 23:32:02,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:32:02,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2024-11-27 23:32:02,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:02,560 INFO L225 Difference]: With dead ends: 374 [2024-11-27 23:32:02,560 INFO L226 Difference]: Without dead ends: 374 [2024-11-27 23:32:02,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:32:02,561 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 263 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:02,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 294 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-27 23:32:02,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-11-27 23:32:02,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2024-11-27 23:32:02,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 294 states have (on average 1.4047619047619047) internal successors, (413), 351 states have internal predecessors, (413), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 23:32:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 454 transitions. [2024-11-27 23:32:02,573 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 454 transitions. Word has length 48 [2024-11-27 23:32:02,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:02,573 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 454 transitions. [2024-11-27 23:32:02,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:32:02,573 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 454 transitions. [2024-11-27 23:32:02,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-27 23:32:02,574 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:02,574 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:02,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-27 23:32:02,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:02,775 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:32:02,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:02,775 INFO L85 PathProgramCache]: Analyzing trace with hash -798543091, now seen corresponding path program 1 times [2024-11-27 23:32:02,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:32:02,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [138034788] [2024-11-27 23:32:02,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:02,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:02,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:02,777 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:02,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-27 23:32:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:02,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-27 23:32:02,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:03,542 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 [2024-11-27 23:32:03,737 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:32:03,737 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 [2024-11-27 23:32:04,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:32:04,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:32:12,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2024-11-27 23:32:12,896 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 43 [2024-11-27 23:32:13,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2024-11-27 23:32:13,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 43 [2024-11-27 23:32:14,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:32:14,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 20 treesize of output 20 [2024-11-27 23:32:14,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2024-11-27 23:32:14,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-27 23:32:14,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:32:14,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 20 treesize of output 20 [2024-11-27 23:32:14,627 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 0 case distinctions, treesize of input 19 treesize of output 21 [2024-11-27 23:32:14,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-27 23:32:16,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 35 [2024-11-27 23:32:16,157 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:32:16,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 54 [2024-11-27 23:32:31,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2024-11-27 23:32:31,974 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 23:32:31,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 73 treesize of output 31 [2024-11-27 23:32:32,088 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-27 23:32:32,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 23:32:32,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:32,768 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:32,768 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:32:32,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138034788] [2024-11-27 23:32:32,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138034788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:32,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:32,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-27 23:32:32,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454847690] [2024-11-27 23:32:32,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:32,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 23:32:32,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:32:32,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 23:32:32,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=332, Unknown=6, NotChecked=0, Total=380 [2024-11-27 23:32:32,770 INFO L87 Difference]: Start difference. First operand 374 states and 454 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 16 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:33:30,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:33:30,072 INFO L93 Difference]: Finished difference Result 417 states and 484 transitions. [2024-11-27 23:33:30,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 23:33:30,072 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 16 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-11-27 23:33:30,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:33:30,074 INFO L225 Difference]: With dead ends: 417 [2024-11-27 23:33:30,074 INFO L226 Difference]: Without dead ends: 417 [2024-11-27 23:33:30,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=146, Invalid=1026, Unknown=18, NotChecked=0, Total=1190 [2024-11-27 23:33:30,076 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 360 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 24 mSolverCounterUnsat, 41 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 41 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:33:30,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1311 Invalid, 2616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2551 Invalid, 41 Unknown, 0 Unchecked, 45.6s Time] [2024-11-27 23:33:30,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-11-27 23:33:30,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 374. [2024-11-27 23:33:30,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 294 states have (on average 1.3979591836734695) internal successors, (411), 351 states have internal predecessors, (411), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 23:33:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 452 transitions. [2024-11-27 23:33:30,089 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 452 transitions. Word has length 51 [2024-11-27 23:33:30,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:33:30,090 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 452 transitions. [2024-11-27 23:33:30,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 16 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:33:30,090 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 452 transitions. [2024-11-27 23:33:30,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 23:33:30,090 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:33:30,091 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:30,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-27 23:33:30,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:33:30,291 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:33:30,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:30,292 INFO L85 PathProgramCache]: Analyzing trace with hash 369413185, now seen corresponding path program 1 times [2024-11-27 23:33:30,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:33:30,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910416227] [2024-11-27 23:33:30,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:30,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:33:30,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:33:30,294 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:33:30,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-27 23:33:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:30,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-27 23:33:30,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:33:31,109 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:33:31,110 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 [2024-11-27 23:33:31,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:33:31,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:33:36,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2024-11-27 23:33:36,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 43 [2024-11-27 23:33:37,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:33:37,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 12 [2024-11-27 23:33:37,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2024-11-27 23:33:41,508 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-27 23:33:41,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 33 [2024-11-27 23:33:42,570 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:33:42,571 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 [2024-11-27 23:33:43,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 19 [2024-11-27 23:33:49,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:33:49,990 INFO L349 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2024-11-27 23:33:49,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 113 [2024-11-27 23:33:50,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 69 [2024-11-27 23:33:50,499 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse8 (select |c_#memory_$Pointer$#1.base| (_ bv3 32)))) (let ((.cse5 (select .cse8 (_ bv4 32)))) (and (not (= (_ bv3 32) |c_ULTIMATE.start_gl_insert_~node~1#1.base|)) (= (_ bv0 32) |c_~#gl_list~0.offset|) (let ((.cse1 (select |c_#memory_$Pointer$#1.base| .cse5))) (let ((.cse2 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base|)) (.cse6 (store .cse1 (_ bv0 32) |c_ULTIMATE.start_gl_insert_~node~1#1.base|))) (or (exists ((v_DerPreprocessor_47 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_46 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store (store (store |c_#memory_$Pointer$#1.base| .cse5 v_DerPreprocessor_46) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_DerPreprocessor_47) (_ bv3 32) .cse6))) (let ((.cse0 (select .cse4 |c_ULTIMATE.start_gl_insert_~node~1#1.base|)) (.cse3 (select .cse4 .cse5))) (and (= .cse0 .cse1) (= .cse0 .cse2) (= v_DerPreprocessor_46 .cse3) (= .cse1 .cse3))))) (and (not (= .cse5 |c_ULTIMATE.start_gl_insert_~node~1#1.base|)) (exists ((v_DerPreprocessor_47 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_46 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store (store (store |c_#memory_$Pointer$#1.base| .cse5 v_DerPreprocessor_46) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_DerPreprocessor_47) (_ bv3 32) .cse6))) (and (= (select .cse7 |c_ULTIMATE.start_gl_insert_~node~1#1.base|) .cse2) (= .cse1 (select .cse7 .cse5))))))))) (= (_ bv3 32) |c_~#gl_list~0.base|) (= |c_ULTIMATE.start_gl_insert_~node~1#1.base| (select .cse8 (_ bv0 32))) (not (= (_ bv3 32) .cse5))))) is different from true [2024-11-27 23:33:50,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:33:50,837 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2024-11-27 23:33:50,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 644 treesize of output 435 [2024-11-27 23:33:51,753 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-27 23:33:51,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2024-11-27 23:33:54,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-27 23:33:55,295 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-27 23:33:55,295 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:33:59,850 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1492 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1491 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1484 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_1492))) (store .cse0 |c_~#gl_list~0.base| (store (select (store .cse0 |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_1491) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base|))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_1484) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|)) |c_~#gl_list~0.base|))) is different from false [2024-11-27 23:33:59,865 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:33:59,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910416227] [2024-11-27 23:33:59,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910416227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:33:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [82281080] [2024-11-27 23:33:59,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:59,866 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 23:33:59,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 23:33:59,868 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 23:33:59,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-27 23:34:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:34:01,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-27 23:34:01,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:34:02,252 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:34:02,252 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 [2024-11-27 23:34:03,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-27 23:34:03,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:34:10,455 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 [2024-11-27 23:34:12,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:34:12,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 58 [2024-11-27 23:34:12,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:34:12,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:34:12,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 40 treesize of output 15 [2024-11-27 23:34:12,295 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 17 treesize of output 18 [2024-11-27 23:34:13,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:34:13,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-27 23:34:13,937 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-27 23:34:13,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 38 [2024-11-27 23:34:13,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 16 [2024-11-27 23:34:15,677 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:34:15,677 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 [2024-11-27 23:34:17,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 12 [2024-11-27 23:34:17,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-27 23:34:24,332 WARN L873 $PredicateComparison]: unable to prove that (and (let ((.cse2 (select (select |c_#memory_$Pointer$#1.offset| |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset|)) (.cse0 (select (select |c_old(#memory_$Pointer$#1.base)| |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset|))) (or (and (exists ((v_DerPreprocessor_52 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_53 (Array (_ BitVec 32) (_ BitVec 32)))) (= v_DerPreprocessor_52 (select (store (store |c_old(#memory_$Pointer$#1.offset)| .cse0 v_DerPreprocessor_52) |c_list_add_#in~new#1.base| v_DerPreprocessor_53) .cse0))) (exists ((v_DerPreprocessor_54 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (store |c_old(#memory_$Pointer$#1.offset)| |c_list_add_#in~new#1.base| v_DerPreprocessor_54))) (store .cse1 |c_list_add_#in~head#1.base| (store (select .cse1 |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| .cse2))) |c_#memory_$Pointer$#1.offset|))) (and (not (= |c_list_add_#in~new#1.base| .cse0)) (exists ((v_DerPreprocessor_56 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_55 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse3 (store (store |c_old(#memory_$Pointer$#1.offset)| .cse0 v_DerPreprocessor_55) |c_list_add_#in~new#1.base| v_DerPreprocessor_56))) (store .cse3 |c_list_add_#in~head#1.base| (store (select .cse3 |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| .cse2))) |c_#memory_$Pointer$#1.offset|))))) (= (_ bv0 32) |c_~#gl_list~0.offset|) (= (_ bv3 32) |c_~#gl_list~0.base|)) is different from true [2024-11-27 23:34:24,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:34:24,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:34:25,125 INFO L349 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2024-11-27 23:34:25,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 125 [2024-11-27 23:34:25,172 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 81 treesize of output 53 [2024-11-27 23:34:25,288 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 0 case distinctions, treesize of input 35 treesize of output 32 [2024-11-27 23:34:25,565 INFO L224 Elim1Store]: Index analysis took 107 ms [2024-11-27 23:34:25,569 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-27 23:34:25,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 5 [2024-11-27 23:34:26,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:34:26,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:34:31,962 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2024-11-27 23:34:31,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:34:36,506 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1617 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_1617) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|)) |c_~#gl_list~0.offset|))) is different from false [2024-11-27 23:34:37,589 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1617 (Array (_ BitVec 32) (_ BitVec 32))) (|v_list_add___list_add_~new#1.offset_50| (_ BitVec 32)) (v_ArrVal_1625 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1624 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store (let ((.cse0 (store |c_#memory_$Pointer$#1.offset| (select (select |c_#memory_$Pointer$#1.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_1625))) (store .cse0 |c_~#gl_list~0.base| (store (select (store .cse0 |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_1624) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| |v_list_add___list_add_~new#1.offset_50|))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_1617) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|)) |c_~#gl_list~0.offset|))) is different from false [2024-11-27 23:34:37,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [82281080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:34:37,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:34:37,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 49 [2024-11-27 23:34:37,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014168755] [2024-11-27 23:34:37,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:34:37,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-27 23:34:37,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:34:37,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-27 23:34:37,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2941, Unknown=64, NotChecked=570, Total=3782 [2024-11-27 23:34:37,606 INFO L87 Difference]: Start difference. First operand 374 states and 452 transitions. Second operand has 50 states, 50 states have (on average 1.84) internal successors, (92), 43 states have internal predecessors, (92), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-27 23:35:22,642 WARN L286 SmtUtils]: Spent 8.79s on a formula simplification. DAG size of input: 92 DAG size of output: 89 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:35:44,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:37:03,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:37:03,781 INFO L93 Difference]: Finished difference Result 592 states and 676 transitions. [2024-11-27 23:37:03,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-27 23:37:03,783 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.84) internal successors, (92), 43 states have internal predecessors, (92), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2024-11-27 23:37:03,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:37:03,785 INFO L225 Difference]: With dead ends: 592 [2024-11-27 23:37:03,785 INFO L226 Difference]: Without dead ends: 592 [2024-11-27 23:37:03,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 101.2s TimeCoverageRelationStatistics Valid=570, Invalid=6003, Unknown=89, NotChecked=820, Total=7482 [2024-11-27 23:37:03,788 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 1147 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 4990 mSolverCounterSat, 131 mSolverCounterUnsat, 197 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 2285 SdHoareTripleChecker+Invalid, 6404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 4990 IncrementalHoareTripleChecker+Invalid, 197 IncrementalHoareTripleChecker+Unknown, 1086 IncrementalHoareTripleChecker+Unchecked, 88.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:37:03,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 2285 Invalid, 6404 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [131 Valid, 4990 Invalid, 197 Unknown, 1086 Unchecked, 88.1s Time] [2024-11-27 23:37:03,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-11-27 23:37:03,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 475. [2024-11-27 23:37:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 387 states have (on average 1.3953488372093024) internal successors, (540), 445 states have internal predecessors, (540), 32 states have call successors, (32), 13 states have call predecessors, (32), 12 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-27 23:37:03,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 591 transitions. [2024-11-27 23:37:03,801 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 591 transitions. Word has length 54 [2024-11-27 23:37:03,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:37:03,802 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 591 transitions. [2024-11-27 23:37:03,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.84) internal successors, (92), 43 states have internal predecessors, (92), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-27 23:37:03,802 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 591 transitions. [2024-11-27 23:37:03,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 23:37:03,803 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:37:03,803 INFO L218 NwaCegarLoop]: 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, 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] [2024-11-27 23:37:03,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2024-11-27 23:37:04,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-27 23:37:04,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:04,204 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2024-11-27 23:37:04,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:37:04,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1873152003, now seen corresponding path program 1 times [2024-11-27 23:37:04,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:37:04,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877129054] [2024-11-27 23:37:04,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:37:04,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:04,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:37:04,207 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:37:04,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012e2e7c-40f3-4e3d-9f20-bfe3a5d89072/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-27 23:37:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:37:04,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-27 23:37:04,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:37:05,110 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 [2024-11-27 23:37:05,358 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:37:05,358 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 [2024-11-27 23:37:06,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:37:06,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 23:37:13,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2024-11-27 23:37:13,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:37:13,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 15 [2024-11-27 23:37:13,766 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 17 treesize of output 18 [2024-11-27 23:37:13,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2024-11-27 23:37:13,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:37:13,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 15 [2024-11-27 23:37:13,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 18 [2024-11-27 23:37:14,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-27 23:37:15,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-27 23:37:15,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2024-11-27 23:37:15,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 44 [2024-11-27 23:37:30,413 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-27 23:37:30,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 10 [2024-11-27 23:37:31,944 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 23:37:31,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 60 treesize of output 30 [2024-11-27 23:37:32,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 23:37:32,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:37:32,811 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:37:32,811 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:37:32,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877129054] [2024-11-27 23:37:32,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877129054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:37:32,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:37:32,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-27 23:37:32,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817216306] [2024-11-27 23:37:32,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:37:32,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 23:37:32,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:37:32,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 23:37:32,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=333, Unknown=4, NotChecked=0, Total=380 [2024-11-27 23:37:32,813 INFO L87 Difference]: Start difference. First operand 475 states and 591 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 17 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)