./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-2.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_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/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_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/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_7c221457-8b62-47b1-81c5-ae570ad3f20c/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 be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:57:13,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:57:13,918 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 02:57:13,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:57:13,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:57:13,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:57:13,975 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:57:13,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:57:13,975 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:57:13,975 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:57:13,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:57:13,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:57:13,976 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:57:13,976 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:57:13,976 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:57:13,977 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:57:13,977 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:57:13,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:57:13,977 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:57:13,977 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:57:13,977 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:57:13,977 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:57:13,978 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:57:13,978 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:57:13,978 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:57:13,978 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:57:13,978 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:57:13,978 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:57:13,978 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:57:13,978 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:57:13,979 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:57:13,979 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:57:13,979 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:57:13,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:57:13,979 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:57:13,979 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:57:13,979 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:57:13,979 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:57:13,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:57:13,980 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:57:13,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:57:13,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:57:13,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:57:13,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:57:13,980 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:57:13,980 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:57:13,980 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:57:13,981 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_7c221457-8b62-47b1-81c5-ae570ad3f20c/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 -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2024-11-28 02:57:14,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:57:14,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:57:14,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:57:14,397 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:57:14,397 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:57:14,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-2.i [2024-11-28 02:57:17,927 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/data/b3594308d/00a119c25bc9442d9aaada52aced0cf8/FLAG9b38ffff7 [2024-11-28 02:57:18,492 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:57:18,493 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-2.i [2024-11-28 02:57:18,525 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/data/b3594308d/00a119c25bc9442d9aaada52aced0cf8/FLAG9b38ffff7 [2024-11-28 02:57:19,010 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/data/b3594308d/00a119c25bc9442d9aaada52aced0cf8 [2024-11-28 02:57:19,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:57:19,014 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:57:19,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:57:19,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:57:19,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:57:19,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:19" (1/1) ... [2024-11-28 02:57:19,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@582180f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:19, skipping insertion in model container [2024-11-28 02:57:19,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:19" (1/1) ... [2024-11-28 02:57:19,083 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:57:19,788 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,857 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,867 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,879 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,888 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,932 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,932 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,936 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,936 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,940 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,943 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,947 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,952 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,962 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,964 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,970 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,974 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,977 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,980 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,989 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:19,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:57:20,021 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) [2024-11-28 02:57:20,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@79a2b2aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:20, skipping insertion in model container [2024-11-28 02:57:20,022 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:57:20,022 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-28 02:57:20,024 INFO L158 Benchmark]: Toolchain (without parser) took 1009.15ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 72.0MB in the end (delta: 20.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:57:20,025 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 167.8MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:57:20,025 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1006.27ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 72.0MB in the end (delta: 20.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:57:20,027 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 167.8MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1006.27ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 72.0MB in the end (delta: 20.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 750]: 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_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/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_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/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_7c221457-8b62-47b1-81c5-ae570ad3f20c/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 be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:57:22,948 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:57:23,046 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 02:57:23,052 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:57:23,052 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:57:23,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:57:23,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:57:23,079 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:57:23,079 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:57:23,079 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:57:23,079 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:57:23,079 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:57:23,080 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:57:23,080 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:57:23,080 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:57:23,080 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:57:23,080 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:57:23,080 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:57:23,080 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:57:23,080 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:57:23,081 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:57:23,081 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:57:23,081 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:57:23,081 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:57:23,081 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:57:23,081 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 02:57:23,081 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 02:57:23,081 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:57:23,081 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:57:23,081 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:57:23,081 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:57:23,082 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:57:23,082 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:57:23,082 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:57:23,082 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:57:23,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:57:23,082 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:57:23,082 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:57:23,082 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:57:23,082 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:57:23,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:57:23,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:57:23,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:57:23,083 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 02:57:23,083 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 02:57:23,083 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:57:23,083 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:57:23,083 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:57:23,084 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:57:23,084 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_7c221457-8b62-47b1-81c5-ae570ad3f20c/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 -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2024-11-28 02:57:23,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:57:23,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:57:23,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:57:23,454 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:57:23,454 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:57:23,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-2.i [2024-11-28 02:57:26,600 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/data/92cf2e6dd/66ee904bd0134f31a5ae1996d6434339/FLAG87316d0a8 [2024-11-28 02:57:27,050 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:57:27,051 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-2.i [2024-11-28 02:57:27,080 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/data/92cf2e6dd/66ee904bd0134f31a5ae1996d6434339/FLAG87316d0a8 [2024-11-28 02:57:27,109 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/data/92cf2e6dd/66ee904bd0134f31a5ae1996d6434339 [2024-11-28 02:57:27,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:57:27,114 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:57:27,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:57:27,119 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:57:27,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:57:27,126 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:27" (1/1) ... [2024-11-28 02:57:27,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd8bdbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:27, skipping insertion in model container [2024-11-28 02:57:27,130 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:27" (1/1) ... [2024-11-28 02:57:27,191 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:57:27,682 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,745 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,750 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,756 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,767 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,819 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,820 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,823 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,823 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,827 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,829 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,830 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,831 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,838 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,839 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,843 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,844 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,846 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,847 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,853 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:57:27,889 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-28 02:57:27,910 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:57:27,967 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,986 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,988 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,992 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:27,998 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:28,025 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:28,025 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:28,028 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:28,028 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:28,031 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:28,032 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:28,033 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:28,034 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:28,039 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:28,040 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:28,043 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:28,044 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:28,044 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:28,045 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:28,050 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:57:28,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:57:28,061 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:57:28,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:57:28,261 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:57:28,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:28 WrapperNode [2024-11-28 02:57:28,262 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:57:28,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:57:28,265 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:57:28,265 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:57:28,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:28" (1/1) ... [2024-11-28 02:57:28,307 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:28" (1/1) ... [2024-11-28 02:57:28,371 INFO L138 Inliner]: procedures = 180, calls = 325, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1177 [2024-11-28 02:57:28,372 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:57:28,372 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:57:28,372 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:57:28,372 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:57:28,382 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:28" (1/1) ... [2024-11-28 02:57:28,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:28" (1/1) ... [2024-11-28 02:57:28,394 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:28" (1/1) ... [2024-11-28 02:57:28,505 INFO L175 MemorySlicer]: Split 302 memory accesses to 3 slices as follows [2, 34, 266]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 4, 58]. [2024-11-28 02:57:28,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:28" (1/1) ... [2024-11-28 02:57:28,505 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:28" (1/1) ... [2024-11-28 02:57:28,592 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:28" (1/1) ... [2024-11-28 02:57:28,595 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:28" (1/1) ... [2024-11-28 02:57:28,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:28" (1/1) ... [2024-11-28 02:57:28,623 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:28" (1/1) ... [2024-11-28 02:57:28,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:28" (1/1) ... [2024-11-28 02:57:28,651 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:57:28,652 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:57:28,652 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:57:28,652 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:57:28,653 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:28" (1/1) ... [2024-11-28 02:57:28,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:57:28,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:28,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:57:28,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:57:28,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-28 02:57:28,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-28 02:57:28,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-28 02:57:28,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-28 02:57:28,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-28 02:57:28,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-28 02:57:28,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:57:28,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:57:28,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 02:57:28,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 02:57:28,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-28 02:57:28,739 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 02:57:28,739 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 02:57:28,739 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-28 02:57:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:57:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:57:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:57:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:57:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 02:57:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:57:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:57:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:57:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 02:57:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 02:57:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-28 02:57:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-28 02:57:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:57:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 02:57:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 02:57:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-28 02:57:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:57:28,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:57:29,106 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:57:29,109 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:57:29,113 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 02:57:29,184 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 02:57:29,216 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 02:57:35,620 INFO L? ?]: Removed 1300 outVars from TransFormulas that were not future-live. [2024-11-28 02:57:35,620 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:57:35,682 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:57:35,682 INFO L312 CfgBuilder]: Removed 41 assume(true) statements. [2024-11-28 02:57:35,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:35 BoogieIcfgContainer [2024-11-28 02:57:35,682 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:57:35,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:57:35,688 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:57:35,696 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:57:35,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:27" (1/3) ... [2024-11-28 02:57:35,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90b9536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:35, skipping insertion in model container [2024-11-28 02:57:35,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:28" (2/3) ... [2024-11-28 02:57:35,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90b9536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:35, skipping insertion in model container [2024-11-28 02:57:35,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:35" (3/3) ... [2024-11-28 02:57:35,698 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test3-2.i [2024-11-28 02:57:35,717 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:57:35,719 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_nondet_test3-2.i that has 5 procedures, 1270 locations, 1 initial locations, 43 loop locations, and 630 error locations. [2024-11-28 02:57:35,815 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:57:35,829 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;@4fc9fc88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:57:35,829 INFO L334 AbstractCegarLoop]: Starting to check reachability of 630 error locations. [2024-11-28 02:57:35,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 1260 states, 625 states have (on average 2.2352) internal successors, (1397), 1253 states have internal predecessors, (1397), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 02:57:35,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-28 02:57:35,842 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:35,842 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-28 02:57:35,843 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr628ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:57:35,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:35,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1758740, now seen corresponding path program 1 times [2024-11-28 02:57:35,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:57:35,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927681451] [2024-11-28 02:57:35,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:35,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:35,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:35,864 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:35,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:57:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:36,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:57:36,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:36,222 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_46| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46| (_ bv0 1)) |c_#valid|))) is different from true [2024-11-28 02:57:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:36,231 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:57:36,232 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:57:36,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927681451] [2024-11-28 02:57:36,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927681451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:36,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:36,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:57:36,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929521281] [2024-11-28 02:57:36,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:36,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:57:36,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:57:36,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:57:36,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-28 02:57:36,279 INFO L87 Difference]: Start difference. First operand has 1260 states, 625 states have (on average 2.2352) internal successors, (1397), 1253 states have internal predecessors, (1397), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2024-11-28 02:57:40,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:40,230 INFO L93 Difference]: Finished difference Result 1833 states and 1957 transitions. [2024-11-28 02:57:40,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:57:40,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2024-11-28 02:57:40,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:40,267 INFO L225 Difference]: With dead ends: 1833 [2024-11-28 02:57:40,268 INFO L226 Difference]: Without dead ends: 1830 [2024-11-28 02:57:40,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-28 02:57:40,274 INFO L435 NwaCegarLoop]: 1040 mSDtfsCounter, 617 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1958 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:40,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 1718 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 946 Invalid, 0 Unknown, 1958 Unchecked, 3.8s Time] [2024-11-28 02:57:40,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2024-11-28 02:57:40,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1248. [2024-11-28 02:57:40,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 619 states have (on average 2.109854604200323) internal successors, (1306), 1241 states have internal predecessors, (1306), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 02:57:40,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1316 transitions. [2024-11-28 02:57:40,419 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1316 transitions. Word has length 4 [2024-11-28 02:57:40,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:40,419 INFO L471 AbstractCegarLoop]: Abstraction has 1248 states and 1316 transitions. [2024-11-28 02:57:40,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2024-11-28 02:57:40,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1316 transitions. [2024-11-28 02:57:40,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-28 02:57:40,420 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:40,420 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-28 02:57:40,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:57:40,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:40,624 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:57:40,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:40,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1756837, now seen corresponding path program 1 times [2024-11-28 02:57:40,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:57:40,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082331715] [2024-11-28 02:57:40,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:40,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:40,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:40,627 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:40,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:57:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:40,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:57:40,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:40,839 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 [2024-11-28 02:57:40,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:40,857 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:57:40,857 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:57:40,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082331715] [2024-11-28 02:57:40,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082331715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:40,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:40,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:57:40,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033599329] [2024-11-28 02:57:40,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:40,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:57:40,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:57:40,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:57:40,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:57:40,859 INFO L87 Difference]: Start difference. First operand 1248 states and 1316 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-28 02:57:43,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:43,509 INFO L93 Difference]: Finished difference Result 1434 states and 1513 transitions. [2024-11-28 02:57:43,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:57:43,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-11-28 02:57:43,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:43,516 INFO L225 Difference]: With dead ends: 1434 [2024-11-28 02:57:43,517 INFO L226 Difference]: Without dead ends: 1434 [2024-11-28 02:57:43,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:57:43,518 INFO L435 NwaCegarLoop]: 754 mSDtfsCounter, 1158 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:43,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 918 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 02:57:43,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2024-11-28 02:57:43,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1247. [2024-11-28 02:57:43,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 628 states have (on average 2.0812101910828025) internal successors, (1307), 1239 states have internal predecessors, (1307), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 02:57:43,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1317 transitions. [2024-11-28 02:57:43,562 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1317 transitions. Word has length 4 [2024-11-28 02:57:43,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:43,563 INFO L471 AbstractCegarLoop]: Abstraction has 1247 states and 1317 transitions. [2024-11-28 02:57:43,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-28 02:57:43,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1317 transitions. [2024-11-28 02:57:43,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-28 02:57:43,563 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:43,564 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-28 02:57:43,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:57:43,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:43,764 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:57:43,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:43,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1756838, now seen corresponding path program 1 times [2024-11-28 02:57:43,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:57:43,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587150669] [2024-11-28 02:57:43,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:43,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:43,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:43,768 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:43,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:57:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:43,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:57:43,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:43,922 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 [2024-11-28 02:57:43,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:43,954 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:57:43,954 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:57:43,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587150669] [2024-11-28 02:57:43,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587150669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:43,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:43,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:57:43,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302513753] [2024-11-28 02:57:43,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:43,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:57:43,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:57:43,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:57:43,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:57:43,956 INFO L87 Difference]: Start difference. First operand 1247 states and 1317 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-28 02:57:47,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:47,961 INFO L93 Difference]: Finished difference Result 1853 states and 1968 transitions. [2024-11-28 02:57:47,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:57:47,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-11-28 02:57:47,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:47,968 INFO L225 Difference]: With dead ends: 1853 [2024-11-28 02:57:47,968 INFO L226 Difference]: Without dead ends: 1853 [2024-11-28 02:57:47,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:57:47,969 INFO L435 NwaCegarLoop]: 1019 mSDtfsCounter, 645 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:47,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1711 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 02:57:47,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2024-11-28 02:57:47,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1457. [2024-11-28 02:57:48,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 838 states have (on average 2.064439140811456) internal successors, (1730), 1448 states have internal predecessors, (1730), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:57:48,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1742 transitions. [2024-11-28 02:57:48,005 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1742 transitions. Word has length 4 [2024-11-28 02:57:48,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:48,006 INFO L471 AbstractCegarLoop]: Abstraction has 1457 states and 1742 transitions. [2024-11-28 02:57:48,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-28 02:57:48,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1742 transitions. [2024-11-28 02:57:48,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 02:57:48,006 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:48,006 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:48,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:57:48,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:48,207 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:57:48,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:48,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1599592659, now seen corresponding path program 1 times [2024-11-28 02:57:48,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:57:48,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [568610425] [2024-11-28 02:57:48,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:48,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:48,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:48,216 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:48,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:57:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:48,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:57:48,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:48,385 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 [2024-11-28 02:57:48,493 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-28 02:57:48,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-28 02:57:48,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:48,597 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:57:48,597 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:57:48,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568610425] [2024-11-28 02:57:48,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568610425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:48,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:48,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:57:48,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015058839] [2024-11-28 02:57:48,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:48,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:57:48,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:57:48,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:57:48,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:57:48,598 INFO L87 Difference]: Start difference. First operand 1457 states and 1742 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-11-28 02:57:55,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:55,763 INFO L93 Difference]: Finished difference Result 2745 states and 2921 transitions. [2024-11-28 02:57:55,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:57:55,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2024-11-28 02:57:55,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:55,774 INFO L225 Difference]: With dead ends: 2745 [2024-11-28 02:57:55,774 INFO L226 Difference]: Without dead ends: 2745 [2024-11-28 02:57:55,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:57:55,775 INFO L435 NwaCegarLoop]: 1248 mSDtfsCounter, 1584 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:55,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 2629 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-28 02:57:55,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2024-11-28 02:57:55,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 1606. [2024-11-28 02:57:55,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 987 states have (on average 2.043566362715299) internal successors, (2017), 1597 states have internal predecessors, (2017), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:57:55,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2029 transitions. [2024-11-28 02:57:55,826 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2029 transitions. Word has length 9 [2024-11-28 02:57:55,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:55,827 INFO L471 AbstractCegarLoop]: Abstraction has 1606 states and 2029 transitions. [2024-11-28 02:57:55,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-11-28 02:57:55,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2029 transitions. [2024-11-28 02:57:55,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 02:57:55,827 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:55,828 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:55,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:57:56,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:56,031 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:57:56,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:56,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1952235122, now seen corresponding path program 1 times [2024-11-28 02:57:56,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:57:56,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315874335] [2024-11-28 02:57:56,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:56,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:56,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:56,034 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:56,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:57:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:56,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:57:56,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:56,200 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 [2024-11-28 02:57:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:56,220 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:57:56,220 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:57:56,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315874335] [2024-11-28 02:57:56,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315874335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:56,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:56,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:57:56,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189506002] [2024-11-28 02:57:56,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:56,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:57:56,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:57:56,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:57:56,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:57:56,222 INFO L87 Difference]: Start difference. First operand 1606 states and 2029 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-28 02:57:59,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:59,069 INFO L93 Difference]: Finished difference Result 2151 states and 2802 transitions. [2024-11-28 02:57:59,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:57:59,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2024-11-28 02:57:59,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:59,075 INFO L225 Difference]: With dead ends: 2151 [2024-11-28 02:57:59,076 INFO L226 Difference]: Without dead ends: 2151 [2024-11-28 02:57:59,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:57:59,077 INFO L435 NwaCegarLoop]: 1177 mSDtfsCounter, 941 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:59,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 1533 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 02:57:59,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2024-11-28 02:57:59,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1558. [2024-11-28 02:57:59,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 987 states have (on average 1.9837892603850051) internal successors, (1958), 1549 states have internal predecessors, (1958), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:57:59,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 1970 transitions. [2024-11-28 02:57:59,119 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 1970 transitions. Word has length 10 [2024-11-28 02:57:59,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:59,119 INFO L471 AbstractCegarLoop]: Abstraction has 1558 states and 1970 transitions. [2024-11-28 02:57:59,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-28 02:57:59,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 1970 transitions. [2024-11-28 02:57:59,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 02:57:59,120 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:59,120 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:57:59,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:57:59,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:59,321 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:57:59,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:59,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1952235123, now seen corresponding path program 1 times [2024-11-28 02:57:59,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:57:59,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134543168] [2024-11-28 02:57:59,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:59,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:59,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:59,326 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:59,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:57:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:59,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:57:59,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:59,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:57:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:57:59,554 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:57:59,554 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:57:59,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134543168] [2024-11-28 02:57:59,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134543168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:59,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:59,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:57:59,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821463936] [2024-11-28 02:57:59,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:59,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:57:59,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:57:59,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:57:59,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:57:59,556 INFO L87 Difference]: Start difference. First operand 1558 states and 1970 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-28 02:58:03,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:03,303 INFO L93 Difference]: Finished difference Result 2251 states and 2902 transitions. [2024-11-28 02:58:03,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:58:03,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2024-11-28 02:58:03,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:03,311 INFO L225 Difference]: With dead ends: 2251 [2024-11-28 02:58:03,311 INFO L226 Difference]: Without dead ends: 2251 [2024-11-28 02:58:03,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:58:03,312 INFO L435 NwaCegarLoop]: 1364 mSDtfsCounter, 703 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:03,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1895 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 02:58:03,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2024-11-28 02:58:03,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 1585. [2024-11-28 02:58:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1024 states have (on average 1.9638671875) internal successors, (2011), 1576 states have internal predecessors, (2011), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:58:03,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2023 transitions. [2024-11-28 02:58:03,353 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2023 transitions. Word has length 10 [2024-11-28 02:58:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:03,354 INFO L471 AbstractCegarLoop]: Abstraction has 1585 states and 2023 transitions. [2024-11-28 02:58:03,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-28 02:58:03,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2023 transitions. [2024-11-28 02:58:03,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 02:58:03,354 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:03,355 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:03,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:58:03,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:03,555 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:58:03,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:03,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2110605453, now seen corresponding path program 1 times [2024-11-28 02:58:03,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:58:03,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242888397] [2024-11-28 02:58:03,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:03,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:03,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:03,558 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:03,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:58:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:03,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:58:03,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:03,846 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:03,846 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:58:03,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242888397] [2024-11-28 02:58:03,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242888397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:03,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:03,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:58:03,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259720908] [2024-11-28 02:58:03,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:03,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:58:03,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:58:03,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:58:03,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:58:03,848 INFO L87 Difference]: Start difference. First operand 1585 states and 2023 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-28 02:58:04,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:04,952 INFO L93 Difference]: Finished difference Result 2203 states and 2778 transitions. [2024-11-28 02:58:04,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:58:04,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2024-11-28 02:58:04,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:04,958 INFO L225 Difference]: With dead ends: 2203 [2024-11-28 02:58:04,959 INFO L226 Difference]: Without dead ends: 2203 [2024-11-28 02:58:04,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:04,959 INFO L435 NwaCegarLoop]: 1385 mSDtfsCounter, 638 mSDsluCounter, 2402 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 3787 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:04,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 3787 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:58:04,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2024-11-28 02:58:04,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 1843. [2024-11-28 02:58:04,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1280 states have (on average 1.97265625) internal successors, (2525), 1832 states have internal predecessors, (2525), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 02:58:05,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2541 transitions. [2024-11-28 02:58:05,000 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2541 transitions. Word has length 12 [2024-11-28 02:58:05,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:05,000 INFO L471 AbstractCegarLoop]: Abstraction has 1843 states and 2541 transitions. [2024-11-28 02:58:05,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-28 02:58:05,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2541 transitions. [2024-11-28 02:58:05,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 02:58:05,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:05,001 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:05,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:58:05,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:05,202 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:58:05,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:05,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1789694881, now seen corresponding path program 1 times [2024-11-28 02:58:05,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:58:05,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550355885] [2024-11-28 02:58:05,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:05,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:05,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:05,205 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:05,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:58:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:05,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:58:05,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:05,382 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 [2024-11-28 02:58:05,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:05,451 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:05,451 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:58:05,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550355885] [2024-11-28 02:58:05,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550355885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:05,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:05,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:58:05,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505801598] [2024-11-28 02:58:05,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:05,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:58:05,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:58:05,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:58:05,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:58:05,454 INFO L87 Difference]: Start difference. First operand 1843 states and 2541 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-28 02:58:08,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:08,947 INFO L93 Difference]: Finished difference Result 2028 states and 2669 transitions. [2024-11-28 02:58:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:58:08,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2024-11-28 02:58:08,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:08,954 INFO L225 Difference]: With dead ends: 2028 [2024-11-28 02:58:08,954 INFO L226 Difference]: Without dead ends: 2028 [2024-11-28 02:58:08,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:08,956 INFO L435 NwaCegarLoop]: 711 mSDtfsCounter, 1156 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:08,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 1473 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-28 02:58:08,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2024-11-28 02:58:08,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1820. [2024-11-28 02:58:08,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1280 states have (on average 1.90078125) internal successors, (2433), 1809 states have internal predecessors, (2433), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 02:58:08,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2449 transitions. [2024-11-28 02:58:08,994 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2449 transitions. Word has length 14 [2024-11-28 02:58:08,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:08,995 INFO L471 AbstractCegarLoop]: Abstraction has 1820 states and 2449 transitions. [2024-11-28 02:58:08,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-28 02:58:08,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2449 transitions. [2024-11-28 02:58:08,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 02:58:08,996 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:08,996 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:09,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:58:09,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:09,197 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:58:09,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:09,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1789694880, now seen corresponding path program 1 times [2024-11-28 02:58:09,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:58:09,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094163841] [2024-11-28 02:58:09,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:09,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:09,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:09,202 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:09,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:58:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:09,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:58:09,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:09,394 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 [2024-11-28 02:58:09,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:09,550 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:09,550 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:58:09,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094163841] [2024-11-28 02:58:09,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094163841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:09,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:09,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:58:09,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495510118] [2024-11-28 02:58:09,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:09,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:58:09,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:58:09,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:58:09,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:58:09,553 INFO L87 Difference]: Start difference. First operand 1820 states and 2449 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-28 02:58:14,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:14,455 INFO L93 Difference]: Finished difference Result 2152 states and 2603 transitions. [2024-11-28 02:58:14,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:58:14,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2024-11-28 02:58:14,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:14,460 INFO L225 Difference]: With dead ends: 2152 [2024-11-28 02:58:14,460 INFO L226 Difference]: Without dead ends: 2152 [2024-11-28 02:58:14,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:14,460 INFO L435 NwaCegarLoop]: 968 mSDtfsCounter, 623 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:14,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 2208 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-28 02:58:14,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2024-11-28 02:58:14,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1769. [2024-11-28 02:58:14,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1229 states have (on average 1.90073230268511) internal successors, (2336), 1758 states have internal predecessors, (2336), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 02:58:14,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 2352 transitions. [2024-11-28 02:58:14,492 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 2352 transitions. Word has length 14 [2024-11-28 02:58:14,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:14,492 INFO L471 AbstractCegarLoop]: Abstraction has 1769 states and 2352 transitions. [2024-11-28 02:58:14,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-28 02:58:14,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 2352 transitions. [2024-11-28 02:58:14,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 02:58:14,493 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:14,493 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:14,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:58:14,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:14,694 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr355REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:58:14,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:14,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1909716041, now seen corresponding path program 1 times [2024-11-28 02:58:14,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:58:14,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977215585] [2024-11-28 02:58:14,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:14,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:14,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:14,700 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:14,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:58:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:14,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:58:14,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:14,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:14,880 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:14,881 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:58:14,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977215585] [2024-11-28 02:58:14,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977215585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:14,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:14,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:58:14,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810599457] [2024-11-28 02:58:14,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:14,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:58:14,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:58:14,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:58:14,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:58:14,882 INFO L87 Difference]: Start difference. First operand 1769 states and 2352 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-28 02:58:14,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:14,976 INFO L93 Difference]: Finished difference Result 1697 states and 2229 transitions. [2024-11-28 02:58:14,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:58:14,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2024-11-28 02:58:14,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:14,982 INFO L225 Difference]: With dead ends: 1697 [2024-11-28 02:58:14,982 INFO L226 Difference]: Without dead ends: 1697 [2024-11-28 02:58:14,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:14,982 INFO L435 NwaCegarLoop]: 1143 mSDtfsCounter, 45 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3406 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:14,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3406 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:58:14,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2024-11-28 02:58:15,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1697. [2024-11-28 02:58:15,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1176 states have (on average 1.8818027210884354) internal successors, (2213), 1686 states have internal predecessors, (2213), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 02:58:15,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2229 transitions. [2024-11-28 02:58:15,008 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2229 transitions. Word has length 16 [2024-11-28 02:58:15,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:15,009 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 2229 transitions. [2024-11-28 02:58:15,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-28 02:58:15,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2229 transitions. [2024-11-28 02:58:15,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 02:58:15,010 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:15,010 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:15,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:58:15,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:15,210 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr628ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:58:15,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:15,211 INFO L85 PathProgramCache]: Analyzing trace with hash -170886023, now seen corresponding path program 1 times [2024-11-28 02:58:15,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:58:15,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265195573] [2024-11-28 02:58:15,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:15,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:15,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:15,213 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:15,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:58:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:15,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:58:15,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:15,562 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_47| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47|)))) is different from true [2024-11-28 02:58:15,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:15,563 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:15,563 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:58:15,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265195573] [2024-11-28 02:58:15,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265195573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:15,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:15,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:58:15,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467856167] [2024-11-28 02:58:15,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:15,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:58:15,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:58:15,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:58:15,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-28 02:58:15,566 INFO L87 Difference]: Start difference. First operand 1697 states and 2229 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-28 02:58:17,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:17,837 INFO L93 Difference]: Finished difference Result 1989 states and 2596 transitions. [2024-11-28 02:58:17,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:58:17,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2024-11-28 02:58:17,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:17,842 INFO L225 Difference]: With dead ends: 1989 [2024-11-28 02:58:17,842 INFO L226 Difference]: Without dead ends: 1981 [2024-11-28 02:58:17,842 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-28 02:58:17,843 INFO L435 NwaCegarLoop]: 1066 mSDtfsCounter, 239 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1420 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:17,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 1694 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 642 Invalid, 0 Unknown, 1420 Unchecked, 2.2s Time] [2024-11-28 02:58:17,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2024-11-28 02:58:17,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1755. [2024-11-28 02:58:17,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1233 states have (on average 1.8450932684509327) internal successors, (2275), 1743 states have internal predecessors, (2275), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:58:17,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2293 transitions. [2024-11-28 02:58:17,870 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2293 transitions. Word has length 17 [2024-11-28 02:58:17,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:17,871 INFO L471 AbstractCegarLoop]: Abstraction has 1755 states and 2293 transitions. [2024-11-28 02:58:17,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-28 02:58:17,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2293 transitions. [2024-11-28 02:58:17,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 02:58:17,871 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:17,872 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] [2024-11-28 02:58:17,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:58:18,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:18,072 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:58:18,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:18,073 INFO L85 PathProgramCache]: Analyzing trace with hash 2113969666, now seen corresponding path program 1 times [2024-11-28 02:58:18,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:58:18,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151900671] [2024-11-28 02:58:18,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:18,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:18,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:18,075 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:18,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:58:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:18,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:58:18,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:18,292 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 [2024-11-28 02:58:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:18,419 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:18,419 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:58:18,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151900671] [2024-11-28 02:58:18,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151900671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:18,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:18,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:58:18,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110091583] [2024-11-28 02:58:18,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:18,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:58:18,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:58:18,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:58:18,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:58:18,421 INFO L87 Difference]: Start difference. First operand 1755 states and 2293 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2024-11-28 02:58:23,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:23,190 INFO L93 Difference]: Finished difference Result 2406 states and 3115 transitions. [2024-11-28 02:58:23,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:58:23,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2024-11-28 02:58:23,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:23,197 INFO L225 Difference]: With dead ends: 2406 [2024-11-28 02:58:23,198 INFO L226 Difference]: Without dead ends: 2406 [2024-11-28 02:58:23,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:23,198 INFO L435 NwaCegarLoop]: 1304 mSDtfsCounter, 788 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:23,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 2618 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-28 02:58:23,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2024-11-28 02:58:23,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 1871. [2024-11-28 02:58:23,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1349 states have (on average 1.8243143068939955) internal successors, (2461), 1859 states have internal predecessors, (2461), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:58:23,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 2479 transitions. [2024-11-28 02:58:23,225 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 2479 transitions. Word has length 20 [2024-11-28 02:58:23,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:23,225 INFO L471 AbstractCegarLoop]: Abstraction has 1871 states and 2479 transitions. [2024-11-28 02:58:23,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2024-11-28 02:58:23,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 2479 transitions. [2024-11-28 02:58:23,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 02:58:23,226 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:23,226 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] [2024-11-28 02:58:23,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:58:23,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:23,427 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:58:23,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:23,427 INFO L85 PathProgramCache]: Analyzing trace with hash 2113969665, now seen corresponding path program 1 times [2024-11-28 02:58:23,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:58:23,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546202839] [2024-11-28 02:58:23,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:23,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:23,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:23,432 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:23,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:58:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:23,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:58:23,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:23,681 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:23,681 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:58:23,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546202839] [2024-11-28 02:58:23,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546202839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:23,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:23,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:58:23,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879999398] [2024-11-28 02:58:23,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:23,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:58:23,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:58:23,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:58:23,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:58:23,683 INFO L87 Difference]: Start difference. First operand 1871 states and 2479 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2024-11-28 02:58:27,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:27,217 INFO L93 Difference]: Finished difference Result 2306 states and 2976 transitions. [2024-11-28 02:58:27,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:58:27,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2024-11-28 02:58:27,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:27,224 INFO L225 Difference]: With dead ends: 2306 [2024-11-28 02:58:27,224 INFO L226 Difference]: Without dead ends: 2306 [2024-11-28 02:58:27,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:27,225 INFO L435 NwaCegarLoop]: 1028 mSDtfsCounter, 908 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:27,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 2053 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-28 02:58:27,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2024-11-28 02:58:27,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 1848. [2024-11-28 02:58:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1349 states have (on average 1.7561156412157153) internal successors, (2369), 1836 states have internal predecessors, (2369), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:58:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 2387 transitions. [2024-11-28 02:58:27,247 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 2387 transitions. Word has length 20 [2024-11-28 02:58:27,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:27,247 INFO L471 AbstractCegarLoop]: Abstraction has 1848 states and 2387 transitions. [2024-11-28 02:58:27,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2024-11-28 02:58:27,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 2387 transitions. [2024-11-28 02:58:27,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 02:58:27,248 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:27,248 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2024-11-28 02:58:27,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 02:58:27,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:27,451 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:58:27,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:27,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1029891552, now seen corresponding path program 1 times [2024-11-28 02:58:27,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:58:27,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378816351] [2024-11-28 02:58:27,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:27,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:27,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:27,454 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:27,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:58:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:27,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:58:27,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:27,734 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 [2024-11-28 02:58:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:28,035 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:58:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:28,782 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:58:28,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378816351] [2024-11-28 02:58:28,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378816351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:58:28,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:58:28,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-28 02:58:28,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803443561] [2024-11-28 02:58:28,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:58:28,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:58:28,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:58:28,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:58:28,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:58:28,784 INFO L87 Difference]: Start difference. First operand 1848 states and 2387 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2024-11-28 02:58:41,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:41,394 INFO L93 Difference]: Finished difference Result 2745 states and 3519 transitions. [2024-11-28 02:58:41,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:58:41,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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 39 [2024-11-28 02:58:41,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:41,403 INFO L225 Difference]: With dead ends: 2745 [2024-11-28 02:58:41,403 INFO L226 Difference]: Without dead ends: 2745 [2024-11-28 02:58:41,404 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:58:41,404 INFO L435 NwaCegarLoop]: 1332 mSDtfsCounter, 1457 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 2859 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 4044 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:41,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1459 Valid, 4044 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2859 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2024-11-28 02:58:41,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2024-11-28 02:58:41,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2014. [2024-11-28 02:58:41,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2014 states, 1515 states have (on average 1.718151815181518) internal successors, (2603), 2002 states have internal predecessors, (2603), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:58:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 2621 transitions. [2024-11-28 02:58:41,438 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 2621 transitions. Word has length 39 [2024-11-28 02:58:41,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:41,439 INFO L471 AbstractCegarLoop]: Abstraction has 2014 states and 2621 transitions. [2024-11-28 02:58:41,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2024-11-28 02:58:41,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 2621 transitions. [2024-11-28 02:58:41,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 02:58:41,440 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:41,440 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] [2024-11-28 02:58:41,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 02:58:41,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:41,641 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr414REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:58:41,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:41,642 INFO L85 PathProgramCache]: Analyzing trace with hash 251367790, now seen corresponding path program 1 times [2024-11-28 02:58:41,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:58:41,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316657177] [2024-11-28 02:58:41,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:41,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:41,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:41,645 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:41,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:58:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:41,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:58:41,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:41,911 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:41,911 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:58:41,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316657177] [2024-11-28 02:58:41,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316657177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:41,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:41,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:58:41,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391351192] [2024-11-28 02:58:41,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:41,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:58:41,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:58:41,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:58:41,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:58:41,914 INFO L87 Difference]: Start difference. First operand 2014 states and 2621 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-28 02:58:42,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:42,002 INFO L93 Difference]: Finished difference Result 2016 states and 2297 transitions. [2024-11-28 02:58:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:58:42,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2024-11-28 02:58:42,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:42,013 INFO L225 Difference]: With dead ends: 2016 [2024-11-28 02:58:42,015 INFO L226 Difference]: Without dead ends: 2016 [2024-11-28 02:58:42,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:58:42,016 INFO L435 NwaCegarLoop]: 1420 mSDtfsCounter, 319 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2494 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:42,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 2494 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:58:42,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2024-11-28 02:58:42,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1639. [2024-11-28 02:58:42,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1142 states have (on average 1.6418563922942206) internal successors, (1875), 1629 states have internal predecessors, (1875), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-28 02:58:42,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 1889 transitions. [2024-11-28 02:58:42,047 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 1889 transitions. Word has length 49 [2024-11-28 02:58:42,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:42,048 INFO L471 AbstractCegarLoop]: Abstraction has 1639 states and 1889 transitions. [2024-11-28 02:58:42,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-28 02:58:42,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 1889 transitions. [2024-11-28 02:58:42,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 02:58:42,050 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:42,051 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] [2024-11-28 02:58:42,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 02:58:42,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:42,251 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:58:42,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:42,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2082023574, now seen corresponding path program 1 times [2024-11-28 02:58:42,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:58:42,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489869315] [2024-11-28 02:58:42,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:42,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:42,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:42,254 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:42,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:58:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:42,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:58:42,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:42,565 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:42,565 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:58:42,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489869315] [2024-11-28 02:58:42,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489869315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:42,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:42,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:58:42,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209849409] [2024-11-28 02:58:42,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:42,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:58:42,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:58:42,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:58:42,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:58:42,567 INFO L87 Difference]: Start difference. First operand 1639 states and 1889 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-11-28 02:58:42,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:42,665 INFO L93 Difference]: Finished difference Result 1621 states and 1859 transitions. [2024-11-28 02:58:42,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:58:42,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 52 [2024-11-28 02:58:42,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:42,670 INFO L225 Difference]: With dead ends: 1621 [2024-11-28 02:58:42,671 INFO L226 Difference]: Without dead ends: 1621 [2024-11-28 02:58:42,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:42,672 INFO L435 NwaCegarLoop]: 1122 mSDtfsCounter, 27 mSDsluCounter, 2207 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:42,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3329 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:58:42,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2024-11-28 02:58:42,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1621. [2024-11-28 02:58:42,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1124 states have (on average 1.6414590747330962) internal successors, (1845), 1611 states have internal predecessors, (1845), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-28 02:58:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 1859 transitions. [2024-11-28 02:58:42,704 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 1859 transitions. Word has length 52 [2024-11-28 02:58:42,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:42,705 INFO L471 AbstractCegarLoop]: Abstraction has 1621 states and 1859 transitions. [2024-11-28 02:58:42,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-11-28 02:58:42,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 1859 transitions. [2024-11-28 02:58:42,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 02:58:42,706 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:42,706 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, 1] [2024-11-28 02:58:42,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 02:58:42,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:42,907 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:58:42,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:42,907 INFO L85 PathProgramCache]: Analyzing trace with hash 24010691, now seen corresponding path program 1 times [2024-11-28 02:58:42,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:58:42,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776583585] [2024-11-28 02:58:42,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:42,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:42,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:42,912 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:42,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:58:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:43,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:58:43,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:43,212 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:43,212 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:58:43,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776583585] [2024-11-28 02:58:43,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776583585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:43,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:43,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:58:43,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868742835] [2024-11-28 02:58:43,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:43,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:58:43,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:58:43,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:58:43,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:58:43,215 INFO L87 Difference]: Start difference. First operand 1621 states and 1859 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-28 02:58:43,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:43,304 INFO L93 Difference]: Finished difference Result 1306 states and 1419 transitions. [2024-11-28 02:58:43,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:58:43,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2024-11-28 02:58:43,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:43,308 INFO L225 Difference]: With dead ends: 1306 [2024-11-28 02:58:43,309 INFO L226 Difference]: Without dead ends: 1306 [2024-11-28 02:58:43,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:43,310 INFO L435 NwaCegarLoop]: 1076 mSDtfsCounter, 56 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:43,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3155 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:58:43,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2024-11-28 02:58:43,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1304. [2024-11-28 02:58:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 830 states have (on average 1.6903614457831326) internal successors, (1403), 1294 states have internal predecessors, (1403), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-28 02:58:43,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1417 transitions. [2024-11-28 02:58:43,326 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1417 transitions. Word has length 55 [2024-11-28 02:58:43,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:43,327 INFO L471 AbstractCegarLoop]: Abstraction has 1304 states and 1417 transitions. [2024-11-28 02:58:43,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-28 02:58:43,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1417 transitions. [2024-11-28 02:58:43,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 02:58:43,328 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:43,328 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, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:43,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 02:58:43,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:43,529 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:58:43,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:43,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1844682466, now seen corresponding path program 1 times [2024-11-28 02:58:43,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:58:43,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762569775] [2024-11-28 02:58:43,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:43,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:43,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:43,533 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:43,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:58:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:43,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:58:43,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:43,767 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:58:43,767 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:58:43,768 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:58:43,771 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 30 treesize of output 39 [2024-11-28 02:58:43,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:58:43,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2024-11-28 02:58:43,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:43,910 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:43,910 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:58:43,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762569775] [2024-11-28 02:58:43,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762569775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:43,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:43,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:58:43,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344684265] [2024-11-28 02:58:43,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:43,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:58:43,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:58:43,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:58:43,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:58:43,913 INFO L87 Difference]: Start difference. First operand 1304 states and 1417 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-11-28 02:58:44,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:44,401 INFO L93 Difference]: Finished difference Result 1972 states and 2132 transitions. [2024-11-28 02:58:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:58:44,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 60 [2024-11-28 02:58:44,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:44,405 INFO L225 Difference]: With dead ends: 1972 [2024-11-28 02:58:44,405 INFO L226 Difference]: Without dead ends: 1969 [2024-11-28 02:58:44,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:58:44,405 INFO L435 NwaCegarLoop]: 1064 mSDtfsCounter, 2424 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:44,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2432 Valid, 3989 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:58:44,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2024-11-28 02:58:44,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1251. [2024-11-28 02:58:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 778 states have (on average 1.7352185089974292) internal successors, (1350), 1242 states have internal predecessors, (1350), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:58:44,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1362 transitions. [2024-11-28 02:58:44,443 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1362 transitions. Word has length 60 [2024-11-28 02:58:44,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:44,444 INFO L471 AbstractCegarLoop]: Abstraction has 1251 states and 1362 transitions. [2024-11-28 02:58:44,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-11-28 02:58:44,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1362 transitions. [2024-11-28 02:58:44,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 02:58:44,444 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:44,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:44,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 02:58:44,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:44,645 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:58:44,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:44,646 INFO L85 PathProgramCache]: Analyzing trace with hash 54784503, now seen corresponding path program 1 times [2024-11-28 02:58:44,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:58:44,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853852041] [2024-11-28 02:58:44,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:44,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:44,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:44,648 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:44,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:58:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:44,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:58:44,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:44,977 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 [2024-11-28 02:58:45,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:58:45,678 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 [2024-11-28 02:58:45,703 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:58:45,704 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 [2024-11-28 02:58:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:45,709 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:45,709 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:58:45,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853852041] [2024-11-28 02:58:45,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853852041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:45,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:45,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:58:45,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201348830] [2024-11-28 02:58:45,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:45,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:58:45,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:58:45,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:58:45,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:45,711 INFO L87 Difference]: Start difference. First operand 1251 states and 1362 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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) [2024-11-28 02:58:49,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:49,993 INFO L93 Difference]: Finished difference Result 1585 states and 1723 transitions. [2024-11-28 02:58:49,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:58:49,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2024-11-28 02:58:49,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:49,996 INFO L225 Difference]: With dead ends: 1585 [2024-11-28 02:58:49,996 INFO L226 Difference]: Without dead ends: 1585 [2024-11-28 02:58:49,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:58:49,997 INFO L435 NwaCegarLoop]: 529 mSDtfsCounter, 1855 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1860 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:49,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1860 Valid, 1008 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 02:58:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2024-11-28 02:58:50,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1176. [2024-11-28 02:58:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 741 states have (on average 1.670715249662618) internal successors, (1238), 1167 states have internal predecessors, (1238), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:58:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1250 transitions. [2024-11-28 02:58:50,009 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1250 transitions. Word has length 63 [2024-11-28 02:58:50,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:50,009 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1250 transitions. [2024-11-28 02:58:50,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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) [2024-11-28 02:58:50,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1250 transitions. [2024-11-28 02:58:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:58:50,010 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:50,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:50,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 02:58:50,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:50,211 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:58:50,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:50,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2089651903, now seen corresponding path program 1 times [2024-11-28 02:58:50,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:58:50,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747120972] [2024-11-28 02:58:50,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:50,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:50,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:50,213 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:50,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:58:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:50,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:58:50,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:50,513 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 [2024-11-28 02:58:50,535 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 19 treesize of output 1 [2024-11-28 02:58:50,558 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 23 treesize of output 11 [2024-11-28 02:58:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:50,570 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:50,570 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:58:50,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747120972] [2024-11-28 02:58:50,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747120972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:50,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:50,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:58:50,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890217105] [2024-11-28 02:58:50,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:50,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:58:50,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:58:50,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:58:50,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:50,572 INFO L87 Difference]: Start difference. First operand 1176 states and 1250 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-28 02:58:54,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:54,071 INFO L93 Difference]: Finished difference Result 1175 states and 1249 transitions. [2024-11-28 02:58:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:58:54,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2024-11-28 02:58:54,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:54,075 INFO L225 Difference]: With dead ends: 1175 [2024-11-28 02:58:54,075 INFO L226 Difference]: Without dead ends: 1175 [2024-11-28 02:58:54,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:58:54,076 INFO L435 NwaCegarLoop]: 1049 mSDtfsCounter, 2 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:54,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2719 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-28 02:58:54,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2024-11-28 02:58:54,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1175. [2024-11-28 02:58:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 741 states have (on average 1.669365721997301) internal successors, (1237), 1166 states have internal predecessors, (1237), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:58:54,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1249 transitions. [2024-11-28 02:58:54,093 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1249 transitions. Word has length 68 [2024-11-28 02:58:54,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:54,094 INFO L471 AbstractCegarLoop]: Abstraction has 1175 states and 1249 transitions. [2024-11-28 02:58:54,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-28 02:58:54,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1249 transitions. [2024-11-28 02:58:54,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:58:54,095 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:54,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:54,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 02:58:54,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:54,296 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:58:54,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:54,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2089651902, now seen corresponding path program 1 times [2024-11-28 02:58:54,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:58:54,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370990169] [2024-11-28 02:58:54,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:54,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:54,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:54,299 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:54,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 02:58:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:54,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:58:54,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:54,655 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 [2024-11-28 02:58:54,685 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 19 treesize of output 1 [2024-11-28 02:58:54,692 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 13 treesize of output 9 [2024-11-28 02:58:54,775 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 21 treesize of output 9 [2024-11-28 02:58:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:54,804 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:54,804 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:58:54,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370990169] [2024-11-28 02:58:54,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370990169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:54,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:54,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:58:54,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630673457] [2024-11-28 02:58:54,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:54,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:58:54,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:58:54,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:58:54,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:54,806 INFO L87 Difference]: Start difference. First operand 1175 states and 1249 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-28 02:58:59,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:59,140 INFO L93 Difference]: Finished difference Result 1174 states and 1248 transitions. [2024-11-28 02:58:59,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:58:59,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2024-11-28 02:58:59,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:59,144 INFO L225 Difference]: With dead ends: 1174 [2024-11-28 02:58:59,144 INFO L226 Difference]: Without dead ends: 1174 [2024-11-28 02:58:59,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:58:59,145 INFO L435 NwaCegarLoop]: 1049 mSDtfsCounter, 1 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:59,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2726 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 02:58:59,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2024-11-28 02:58:59,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1174. [2024-11-28 02:58:59,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 740 states have (on average 1.6702702702702703) internal successors, (1236), 1165 states have internal predecessors, (1236), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:58:59,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1248 transitions. [2024-11-28 02:58:59,162 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1248 transitions. Word has length 68 [2024-11-28 02:58:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:59,162 INFO L471 AbstractCegarLoop]: Abstraction has 1174 states and 1248 transitions. [2024-11-28 02:58:59,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-28 02:58:59,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1248 transitions. [2024-11-28 02:58:59,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 02:58:59,163 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:59,163 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:59,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 02:58:59,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:59,365 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:58:59,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:59,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2059159177, now seen corresponding path program 1 times [2024-11-28 02:58:59,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:58:59,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407801092] [2024-11-28 02:58:59,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:59,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:59,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:59,370 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:59,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 02:58:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:59,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:58:59,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:59,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:59,712 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:59,712 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:58:59,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407801092] [2024-11-28 02:58:59,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407801092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:59,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:59,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:58:59,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328171912] [2024-11-28 02:58:59,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:59,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:58:59,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:58:59,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:58:59,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:58:59,715 INFO L87 Difference]: Start difference. First operand 1174 states and 1248 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:58:59,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:59,771 INFO L93 Difference]: Finished difference Result 1177 states and 1252 transitions. [2024-11-28 02:58:59,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:58:59,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2024-11-28 02:58:59,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:59,777 INFO L225 Difference]: With dead ends: 1177 [2024-11-28 02:58:59,777 INFO L226 Difference]: Without dead ends: 1177 [2024-11-28 02:58:59,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:58:59,779 INFO L435 NwaCegarLoop]: 1049 mSDtfsCounter, 0 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:59,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3142 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:58:59,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2024-11-28 02:58:59,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1177. [2024-11-28 02:58:59,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 742 states have (on average 1.669811320754717) internal successors, (1239), 1168 states have internal predecessors, (1239), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 02:58:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1252 transitions. [2024-11-28 02:58:59,797 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1252 transitions. Word has length 76 [2024-11-28 02:58:59,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:59,798 INFO L471 AbstractCegarLoop]: Abstraction has 1177 states and 1252 transitions. [2024-11-28 02:58:59,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:58:59,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1252 transitions. [2024-11-28 02:58:59,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 02:58:59,799 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:59,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:59,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 02:58:59,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:00,000 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:59:00,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:00,001 INFO L85 PathProgramCache]: Analyzing trace with hash 107336866, now seen corresponding path program 1 times [2024-11-28 02:59:00,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:59:00,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499601175] [2024-11-28 02:59:00,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:00,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:00,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:00,004 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:00,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 02:59:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:00,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:59:00,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:00,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:00,353 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:00,421 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:59:00,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499601175] [2024-11-28 02:59:00,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499601175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:59:00,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:59:00,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-28 02:59:00,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486136666] [2024-11-28 02:59:00,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:59:00,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:59:00,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:59:00,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:59:00,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:59:00,423 INFO L87 Difference]: Start difference. First operand 1177 states and 1252 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:59:00,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:59:00,620 INFO L93 Difference]: Finished difference Result 1189 states and 1269 transitions. [2024-11-28 02:59:00,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:59:00,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2024-11-28 02:59:00,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:59:00,623 INFO L225 Difference]: With dead ends: 1189 [2024-11-28 02:59:00,623 INFO L226 Difference]: Without dead ends: 1189 [2024-11-28 02:59:00,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:59:00,624 INFO L435 NwaCegarLoop]: 1049 mSDtfsCounter, 8 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3145 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:59:00,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3145 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:59:00,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2024-11-28 02:59:00,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1187. [2024-11-28 02:59:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 751 states have (on average 1.6697736351531292) internal successors, (1254), 1177 states have internal predecessors, (1254), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 02:59:00,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1267 transitions. [2024-11-28 02:59:00,642 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1267 transitions. Word has length 77 [2024-11-28 02:59:00,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:59:00,642 INFO L471 AbstractCegarLoop]: Abstraction has 1187 states and 1267 transitions. [2024-11-28 02:59:00,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:59:00,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1267 transitions. [2024-11-28 02:59:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-28 02:59:00,643 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:59:00,643 INFO L218 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:00,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 02:59:00,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:00,844 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:59:00,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:00,844 INFO L85 PathProgramCache]: Analyzing trace with hash -541358903, now seen corresponding path program 2 times [2024-11-28 02:59:00,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:59:00,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160067338] [2024-11-28 02:59:00,845 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:00,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:00,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:00,847 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:00,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 02:59:21,175 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:59:21,175 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:21,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 02:59:21,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:21,357 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 [2024-11-28 02:59:21,379 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:59:21,379 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 [2024-11-28 02:59:21,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:59:21,433 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 13 treesize of output 9 [2024-11-28 02:59:21,591 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 22 treesize of output 10 [2024-11-28 02:59:21,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 02:59:21,859 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:59:21,860 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 62 treesize of output 57 [2024-11-28 02:59:21,866 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 30 treesize of output 13 [2024-11-28 02:59:21,921 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 31 treesize of output 13 [2024-11-28 02:59:21,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 02:59:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:59:21,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:22,228 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1270 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1271 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1270) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1271 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2024-11-28 02:59:22,236 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:59:22,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160067338] [2024-11-28 02:59:22,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160067338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:22,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [571078598] [2024-11-28 02:59:22,237 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:22,237 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 02:59:22,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 02:59:22,245 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 02:59:22,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-28 02:59:24,054 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:59:24,054 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:24,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:59:24,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:24,378 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:24,793 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:24,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [571078598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:59:24,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:59:24,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2024-11-28 02:59:24,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474603449] [2024-11-28 02:59:24,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:59:24,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 02:59:24,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:59:24,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 02:59:24,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=467, Unknown=1, NotChecked=44, Total=600 [2024-11-28 02:59:24,796 INFO L87 Difference]: Start difference. First operand 1187 states and 1267 transitions. Second operand has 22 states, 21 states have (on average 6.857142857142857) internal successors, (144), 22 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:59:41,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:59:41,662 INFO L93 Difference]: Finished difference Result 1579 states and 1690 transitions. [2024-11-28 02:59:41,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 02:59:41,663 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.857142857142857) internal successors, (144), 22 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 80 [2024-11-28 02:59:41,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:59:41,666 INFO L225 Difference]: With dead ends: 1579 [2024-11-28 02:59:41,666 INFO L226 Difference]: Without dead ends: 1569 [2024-11-28 02:59:41,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=320, Invalid=1845, Unknown=1, NotChecked=90, Total=2256 [2024-11-28 02:59:41,667 INFO L435 NwaCegarLoop]: 689 mSDtfsCounter, 808 mSDsluCounter, 6679 mSDsCounter, 0 mSdLazyCounter, 6219 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 7368 SdHoareTripleChecker+Invalid, 6247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 6219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:59:41,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 7368 Invalid, 6247 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 6219 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2024-11-28 02:59:41,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2024-11-28 02:59:41,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1195. [2024-11-28 02:59:41,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 760 states have (on average 1.6592105263157895) internal successors, (1261), 1185 states have internal predecessors, (1261), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 02:59:41,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1274 transitions. [2024-11-28 02:59:41,687 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1274 transitions. Word has length 80 [2024-11-28 02:59:41,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:59:41,687 INFO L471 AbstractCegarLoop]: Abstraction has 1195 states and 1274 transitions. [2024-11-28 02:59:41,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.857142857142857) internal successors, (144), 22 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:59:41,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1274 transitions. [2024-11-28 02:59:41,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 02:59:41,688 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:59:41,688 INFO L218 NwaCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:41,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 02:59:41,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-28 02:59:42,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 02:59:42,089 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:59:42,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:42,090 INFO L85 PathProgramCache]: Analyzing trace with hash 2008958504, now seen corresponding path program 1 times [2024-11-28 02:59:42,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:59:42,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227257794] [2024-11-28 02:59:42,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:42,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:42,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:42,094 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:42,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 02:59:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:42,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:59:42,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:42,639 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:43,390 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:59:43,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227257794] [2024-11-28 02:59:43,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227257794] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:59:43,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:59:43,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-28 02:59:43,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573944508] [2024-11-28 02:59:43,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:59:43,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 02:59:43,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:59:43,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 02:59:43,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:59:43,394 INFO L87 Difference]: Start difference. First operand 1195 states and 1274 transitions. Second operand has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:59:45,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:59:45,793 INFO L93 Difference]: Finished difference Result 1219 states and 1313 transitions. [2024-11-28 02:59:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 02:59:45,794 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 86 [2024-11-28 02:59:45,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:59:45,797 INFO L225 Difference]: With dead ends: 1219 [2024-11-28 02:59:45,797 INFO L226 Difference]: Without dead ends: 1213 [2024-11-28 02:59:45,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 02:59:45,799 INFO L435 NwaCegarLoop]: 1048 mSDtfsCounter, 15 mSDsluCounter, 12539 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 13587 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:59:45,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 13587 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:59:45,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2024-11-28 02:59:45,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1213. [2024-11-28 02:59:45,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 778 states have (on average 1.6503856041131106) internal successors, (1284), 1203 states have internal predecessors, (1284), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 02:59:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1297 transitions. [2024-11-28 02:59:45,817 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1297 transitions. Word has length 86 [2024-11-28 02:59:45,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:59:45,817 INFO L471 AbstractCegarLoop]: Abstraction has 1213 states and 1297 transitions. [2024-11-28 02:59:45,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:59:45,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1297 transitions. [2024-11-28 02:59:45,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-28 02:59:45,818 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:59:45,818 INFO L218 NwaCegarLoop]: trace histogram [22, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:45,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-28 02:59:46,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:46,019 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 02:59:46,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:46,019 INFO L85 PathProgramCache]: Analyzing trace with hash -850513688, now seen corresponding path program 2 times [2024-11-28 02:59:46,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:59:46,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1721430968] [2024-11-28 02:59:46,020 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:46,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:46,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:46,024 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:46,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 03:00:18,785 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:00:18,785 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:18,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 03:00:18,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:18,951 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:00:18,951 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 [2024-11-28 03:00:18,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:00:19,449 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:00:19,450 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 43 [2024-11-28 03:00:19,513 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 33 treesize of output 15 [2024-11-28 03:00:19,541 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-28 03:00:19,541 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:00:19,802 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-28 03:00:19,802 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 25 treesize of output 24 [2024-11-28 03:00:19,865 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:00:19,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721430968] [2024-11-28 03:00:19,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721430968] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:19,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [107350920] [2024-11-28 03:00:19,865 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:00:19,865 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:00:19,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:00:19,868 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:00:19,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-28 03:00:21,853 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:00:21,853 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:21,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 03:00:21,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:23,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:00:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:26,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [107350920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:00:26,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:00:26,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 26, 26] total 60 [2024-11-28 03:00:26,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430222090] [2024-11-28 03:00:26,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:00:26,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-28 03:00:26,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:00:26,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-28 03:00:26,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=702, Invalid=3072, Unknown=8, NotChecked=0, Total=3782 [2024-11-28 03:00:26,381 INFO L87 Difference]: Start difference. First operand 1213 states and 1297 transitions. Second operand has 60 states, 59 states have (on average 3.0508474576271185) internal successors, (180), 59 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:01:11,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:11,844 INFO L93 Difference]: Finished difference Result 1626 states and 1769 transitions. [2024-11-28 03:01:11,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-28 03:01:11,845 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 3.0508474576271185) internal successors, (180), 59 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 98 [2024-11-28 03:01:11,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:11,849 INFO L225 Difference]: With dead ends: 1626 [2024-11-28 03:01:11,849 INFO L226 Difference]: Without dead ends: 1622 [2024-11-28 03:01:11,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3605 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=3766, Invalid=15964, Unknown=10, NotChecked=0, Total=19740 [2024-11-28 03:01:11,855 INFO L435 NwaCegarLoop]: 684 mSDtfsCounter, 840 mSDsluCounter, 23429 mSDsCounter, 0 mSdLazyCounter, 17017 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 24113 SdHoareTripleChecker+Invalid, 17078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 17017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:11,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 24113 Invalid, 17078 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [61 Valid, 17017 Invalid, 0 Unknown, 0 Unchecked, 35.7s Time] [2024-11-28 03:01:11,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2024-11-28 03:01:11,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1246. [2024-11-28 03:01:11,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 812 states have (on average 1.6366995073891626) internal successors, (1329), 1236 states have internal predecessors, (1329), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 03:01:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1342 transitions. [2024-11-28 03:01:11,875 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1342 transitions. Word has length 98 [2024-11-28 03:01:11,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:11,876 INFO L471 AbstractCegarLoop]: Abstraction has 1246 states and 1342 transitions. [2024-11-28 03:01:11,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 3.0508474576271185) internal successors, (180), 59 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:01:11,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1342 transitions. [2024-11-28 03:01:11,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-28 03:01:11,877 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:11,877 INFO L218 NwaCegarLoop]: trace histogram [44, 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, 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] [2024-11-28 03:01:11,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2024-11-28 03:01:12,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 03:01:12,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:12,279 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 03:01:12,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:12,279 INFO L85 PathProgramCache]: Analyzing trace with hash -130372418, now seen corresponding path program 1 times [2024-11-28 03:01:12,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:01:12,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066362571] [2024-11-28 03:01:12,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:12,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:12,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:12,283 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:12,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 03:01:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:12,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 03:01:12,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:12,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:01:13,085 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:01:13,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:01:13,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:01:13,518 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:01:13,519 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 31 treesize of output 32 [2024-11-28 03:01:13,579 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:01:13,579 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 43 [2024-11-28 03:01:13,625 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 33 treesize of output 15 [2024-11-28 03:01:13,648 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:01:13,648 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:13,702 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-28 03:01:13,702 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 25 treesize of output 24 [2024-11-28 03:01:13,761 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2508) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-28 03:01:14,235 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2554 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2554)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_2508) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-28 03:01:14,238 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:01:14,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066362571] [2024-11-28 03:01:14,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066362571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:14,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1624341857] [2024-11-28 03:01:14,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:14,238 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:01:14,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:01:14,240 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:01:14,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-28 03:01:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:17,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 03:01:17,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:17,698 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 [2024-11-28 03:01:17,853 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 03:01:17,853 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 [2024-11-28 03:01:17,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:01:18,083 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 24 treesize of output 12 [2024-11-28 03:01:19,267 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:01:19,267 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 43 [2024-11-28 03:01:19,414 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:01:19,414 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 43 [2024-11-28 03:01:19,440 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 33 treesize of output 15 [2024-11-28 03:01:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:01:19,490 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:19,517 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2977 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2977) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-28 03:01:19,528 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2977 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2977) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2024-11-28 03:01:20,005 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3023 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2977 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3023))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2977)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:01:20,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1624341857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:20,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:01:20,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2024-11-28 03:01:20,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162063837] [2024-11-28 03:01:20,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:01:20,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:01:20,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:01:20,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:01:20,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=309, Unknown=14, NotChecked=200, Total=600 [2024-11-28 03:01:20,008 INFO L87 Difference]: Start difference. First operand 1246 states and 1342 transitions. Second operand has 18 states, 15 states have (on average 6.466666666666667) internal successors, (97), 18 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:01:27,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:27,581 INFO L93 Difference]: Finished difference Result 1619 states and 1742 transitions. [2024-11-28 03:01:27,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:01:27,581 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 6.466666666666667) internal successors, (97), 18 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 123 [2024-11-28 03:01:27,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:27,585 INFO L225 Difference]: With dead ends: 1619 [2024-11-28 03:01:27,585 INFO L226 Difference]: Without dead ends: 1619 [2024-11-28 03:01:27,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=340, Unknown=14, NotChecked=210, Total=650 [2024-11-28 03:01:27,586 INFO L435 NwaCegarLoop]: 685 mSDtfsCounter, 736 mSDsluCounter, 3875 mSDsCounter, 0 mSdLazyCounter, 3507 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 4560 SdHoareTripleChecker+Invalid, 3523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:27,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 4560 Invalid, 3523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3507 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-28 03:01:27,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2024-11-28 03:01:27,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1245. [2024-11-28 03:01:27,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 812 states have (on average 1.6354679802955665) internal successors, (1328), 1235 states have internal predecessors, (1328), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 03:01:27,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1341 transitions. [2024-11-28 03:01:27,604 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1341 transitions. Word has length 123 [2024-11-28 03:01:27,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:27,605 INFO L471 AbstractCegarLoop]: Abstraction has 1245 states and 1341 transitions. [2024-11-28 03:01:27,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 6.466666666666667) internal successors, (97), 18 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:01:27,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1341 transitions. [2024-11-28 03:01:27,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-28 03:01:27,606 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:27,606 INFO L218 NwaCegarLoop]: trace histogram [44, 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, 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] [2024-11-28 03:01:27,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2024-11-28 03:01:27,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-28 03:01:28,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:28,007 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 03:01:28,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:28,007 INFO L85 PathProgramCache]: Analyzing trace with hash -130372417, now seen corresponding path program 1 times [2024-11-28 03:01:28,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:01:28,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733924295] [2024-11-28 03:01:28,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:28,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:28,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:28,010 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:28,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 03:01:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:28,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-28 03:01:28,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:28,655 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 [2024-11-28 03:01:28,824 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:01:28,824 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 [2024-11-28 03:01:28,833 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 [2024-11-28 03:01:28,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:01:28,876 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 13 treesize of output 9 [2024-11-28 03:01:28,993 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 22 treesize of output 10 [2024-11-28 03:01:28,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:01:29,934 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:01:29,934 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 62 treesize of output 57 [2024-11-28 03:01:29,951 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 30 treesize of output 13 [2024-11-28 03:01:30,105 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:01:30,106 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 62 treesize of output 57 [2024-11-28 03:01:30,124 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 30 treesize of output 13 [2024-11-28 03:01:30,158 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 31 treesize of output 13 [2024-11-28 03:01:30,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:01:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:01:30,206 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:30,415 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3493 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3493) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_3493 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3492 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3493) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3492) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:01:30,443 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3493 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_3493) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3493 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3492 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_3493) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_3492) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 03:01:32,053 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3585 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3584 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3493 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3492 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3584))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3585) .cse0 v_ArrVal_3493) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_3492) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_3585 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3584 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3493 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3585) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3584) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3493) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv4 32)) (bvadd .cse3 (_ bv8 32))))))) is different from false [2024-11-28 03:01:32,060 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:01:32,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733924295] [2024-11-28 03:01:32,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733924295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:32,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1297288175] [2024-11-28 03:01:32,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:32,061 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:01:32,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:01:32,062 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:01:32,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-28 03:01:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:35,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-28 03:01:35,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:35,768 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 [2024-11-28 03:01:35,777 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 [2024-11-28 03:01:36,360 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-28 03:01:36,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-28 03:01:36,399 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:01:36,399 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 [2024-11-28 03:01:36,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:01:36,468 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 [2024-11-28 03:01:36,580 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 17 treesize of output 9 [2024-11-28 03:01:36,642 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 7 treesize of output 3 [2024-11-28 03:01:37,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:01:37,361 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 [2024-11-28 03:01:37,638 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2024-11-28 03:01:37,652 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 27 treesize of output 22 [2024-11-28 03:01:37,910 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:01:37,911 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 22 [2024-11-28 03:01:37,921 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:01:37,921 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 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:01:38,031 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:01:38,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:38,362 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 239 treesize of output 167 [2024-11-28 03:02:37,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1297288175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:37,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:02:37,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2024-11-28 03:02:37,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853581632] [2024-11-28 03:02:37,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:02:37,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:02:37,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:02:37,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:02:37,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=513, Unknown=18, NotChecked=144, Total=756 [2024-11-28 03:02:37,087 INFO L87 Difference]: Start difference. First operand 1245 states and 1341 transitions. Second operand has 20 states, 17 states have (on average 8.941176470588236) internal successors, (152), 20 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:04:43,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:43,482 INFO L93 Difference]: Finished difference Result 1999 states and 2149 transitions. [2024-11-28 03:04:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:04:43,483 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.941176470588236) internal successors, (152), 20 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 123 [2024-11-28 03:04:43,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:43,487 INFO L225 Difference]: With dead ends: 1999 [2024-11-28 03:04:43,487 INFO L226 Difference]: Without dead ends: 1999 [2024-11-28 03:04:43,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 63.6s TimeCoverageRelationStatistics Valid=163, Invalid=887, Unknown=18, NotChecked=192, Total=1260 [2024-11-28 03:04:43,488 INFO L435 NwaCegarLoop]: 542 mSDtfsCounter, 1768 mSDsluCounter, 4486 mSDsCounter, 0 mSdLazyCounter, 7678 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1773 SdHoareTripleChecker+Valid, 5028 SdHoareTripleChecker+Invalid, 7699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 7678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:43,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1773 Valid, 5028 Invalid, 7699 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 7678 Invalid, 0 Unknown, 0 Unchecked, 121.8s Time] [2024-11-28 03:04:43,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2024-11-28 03:04:43,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1244. [2024-11-28 03:04:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 812 states have (on average 1.6342364532019704) internal successors, (1327), 1234 states have internal predecessors, (1327), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 03:04:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1340 transitions. [2024-11-28 03:04:43,513 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1340 transitions. Word has length 123 [2024-11-28 03:04:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:43,513 INFO L471 AbstractCegarLoop]: Abstraction has 1244 states and 1340 transitions. [2024-11-28 03:04:43,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.941176470588236) internal successors, (152), 20 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:04:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1340 transitions. [2024-11-28 03:04:43,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-28 03:04:43,515 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:43,515 INFO L218 NwaCegarLoop]: trace histogram [44, 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, 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] [2024-11-28 03:04:43,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 03:04:43,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2024-11-28 03:04:43,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 03:04:43,916 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 03:04:43,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:43,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1273941329, now seen corresponding path program 1 times [2024-11-28 03:04:43,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:04:43,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857401976] [2024-11-28 03:04:43,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:43,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:43,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:43,923 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:43,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 03:04:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:44,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-28 03:04:44,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:46,585 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:04:46,586 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 [2024-11-28 03:04:46,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:04:49,942 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:04:49,942 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 31 treesize of output 32 [2024-11-28 03:04:50,487 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:04:50,488 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 31 treesize of output 32 [2024-11-28 03:04:51,020 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:04:51,020 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 43 [2024-11-28 03:04:51,446 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 33 treesize of output 15 [2024-11-28 03:04:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:04:51,722 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:04:52,224 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-28 03:04:52,225 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 25 treesize of output 24 [2024-11-28 03:04:52,278 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4495) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem39#1.base|)) is different from false [2024-11-28 03:04:52,339 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_4495) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse0)))) is different from false [2024-11-28 03:04:52,429 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4494 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4494)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_4495) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-28 03:04:52,494 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4494 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4494))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_4495) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-28 03:04:54,307 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4541 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4494 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4541))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4494)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_4495) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-28 03:04:54,320 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:04:54,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857401976] [2024-11-28 03:04:54,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857401976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:54,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1556177363] [2024-11-28 03:04:54,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:54,321 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:04:54,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:04:54,323 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:04:54,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-28 03:05:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:20,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 03:05:20,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:20,606 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 [2024-11-28 03:05:22,438 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 03:05:22,438 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 [2024-11-28 03:05:22,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:05:24,002 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 24 treesize of output 12 [2024-11-28 03:05:30,982 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:05:30,982 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 43 [2024-11-28 03:05:32,003 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:05:32,004 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 43 [2024-11-28 03:05:32,781 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:05:32,781 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 43 [2024-11-28 03:05:32,957 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 33 treesize of output 15 [2024-11-28 03:05:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:05:33,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:05:33,546 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4980 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4980) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-28 03:05:33,606 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4980 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4980) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 03:05:33,695 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4979 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4980 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4979))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4980)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:05:33,757 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4979 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4980 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4979))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4980)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2024-11-28 03:05:35,543 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4979 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5026 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4980 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5026))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4979)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4980)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:05:35,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1556177363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:35,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:05:35,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-11-28 03:05:35,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765809759] [2024-11-28 03:05:35,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:05:35,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:05:35,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:05:35,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:05:35,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=356, Unknown=10, NotChecked=470, Total=930 [2024-11-28 03:05:35,562 INFO L87 Difference]: Start difference. First operand 1244 states and 1340 transitions. Second operand has 20 states, 17 states have (on average 6.294117647058823) internal successors, (107), 20 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:06:25,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:25,564 INFO L93 Difference]: Finished difference Result 1617 states and 1740 transitions. [2024-11-28 03:06:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:06:25,565 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 6.294117647058823) internal successors, (107), 20 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 126 [2024-11-28 03:06:25,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:25,568 INFO L225 Difference]: With dead ends: 1617 [2024-11-28 03:06:25,568 INFO L226 Difference]: Without dead ends: 1617 [2024-11-28 03:06:25,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=103, Invalid=389, Unknown=10, NotChecked=490, Total=992 [2024-11-28 03:06:25,569 INFO L435 NwaCegarLoop]: 683 mSDtfsCounter, 733 mSDsluCounter, 3874 mSDsCounter, 0 mSdLazyCounter, 3503 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 4557 SdHoareTripleChecker+Invalid, 3519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:25,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 4557 Invalid, 3519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3503 Invalid, 0 Unknown, 0 Unchecked, 49.6s Time] [2024-11-28 03:06:25,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2024-11-28 03:06:25,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1243. [2024-11-28 03:06:25,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 812 states have (on average 1.6330049261083743) internal successors, (1326), 1233 states have internal predecessors, (1326), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 03:06:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1339 transitions. [2024-11-28 03:06:25,591 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1339 transitions. Word has length 126 [2024-11-28 03:06:25,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:25,592 INFO L471 AbstractCegarLoop]: Abstraction has 1243 states and 1339 transitions. [2024-11-28 03:06:25,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 6.294117647058823) internal successors, (107), 20 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:06:25,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1339 transitions. [2024-11-28 03:06:25,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-28 03:06:25,593 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:25,593 INFO L218 NwaCegarLoop]: trace histogram [44, 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, 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] [2024-11-28 03:06:25,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 03:06:25,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2024-11-28 03:06:25,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 03:06:25,994 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 03:06:25,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:25,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1273941328, now seen corresponding path program 1 times [2024-11-28 03:06:25,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:06:25,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794054999] [2024-11-28 03:06:25,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:25,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:25,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:25,998 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:25,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 03:06:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:26,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-28 03:06:26,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:28,472 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:06:28,472 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 [2024-11-28 03:06:28,527 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 [2024-11-28 03:06:28,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:06:28,778 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 13 treesize of output 9 [2024-11-28 03:06:29,659 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 22 treesize of output 10 [2024-11-28 03:06:29,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:06:35,800 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:06:35,800 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 62 treesize of output 57 [2024-11-28 03:06:35,833 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 30 treesize of output 13 [2024-11-28 03:06:36,696 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:06:36,696 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 62 treesize of output 57 [2024-11-28 03:06:36,752 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 30 treesize of output 13 [2024-11-28 03:06:37,503 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:06:37,503 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 62 treesize of output 57 [2024-11-28 03:06:37,588 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 30 treesize of output 13 [2024-11-28 03:06:37,732 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 31 treesize of output 13 [2024-11-28 03:06:37,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:06:38,062 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:06:38,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:06:38,897 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5512 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5512) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:06:39,002 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5512 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5512) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd (_ bv12 32) .cse2))))))) is different from false [2024-11-28 03:06:39,209 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5509) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5510) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5512 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5510))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5509) .cse2 v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5512) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 03:06:45,270 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5604 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5512 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5603))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_5510))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5604) .cse0 v_ArrVal_5509) .cse1 v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5512) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5604 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5603))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5604) .cse6 v_ArrVal_5509) (select (select (store .cse7 .cse6 v_ArrVal_5510) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5511))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd (_ bv12 32) .cse5)))))) is different from false [2024-11-28 03:06:45,296 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:06:45,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794054999] [2024-11-28 03:06:45,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794054999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:45,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [112470569] [2024-11-28 03:06:45,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:45,297 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:06:45,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:06:45,299 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:06:45,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-28 03:07:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:12,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-28 03:07:12,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:12,751 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 [2024-11-28 03:07:14,219 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 [2024-11-28 03:07:14,359 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:07:14,359 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 [2024-11-28 03:07:14,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:07:14,503 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 13 treesize of output 9 [2024-11-28 03:07:14,945 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 22 treesize of output 10 [2024-11-28 03:07:14,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:07:20,448 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:07:20,448 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 62 treesize of output 57 [2024-11-28 03:07:20,476 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 30 treesize of output 13 [2024-11-28 03:07:21,032 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:07:21,032 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 62 treesize of output 57 [2024-11-28 03:07:21,060 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 30 treesize of output 13 [2024-11-28 03:07:21,483 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:07:21,483 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 62 treesize of output 57 [2024-11-28 03:07:21,511 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 30 treesize of output 13 [2024-11-28 03:07:21,698 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 31 treesize of output 13 [2024-11-28 03:07:21,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:07:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:07:21,777 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:07:22,616 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6091) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 03:07:22,823 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6088 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6089 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6089) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6088) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6088 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6089 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6088))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6089) .cse2 v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_6091) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 03:07:23,037 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6088 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6089 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6089) (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6088) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6088 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6089 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6088))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6089) .cse3 v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_6091) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-28 03:07:27,473 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6183 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6182 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6088 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6089 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6182))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_6088))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6183) .cse0 v_ArrVal_6089) .cse1 v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_6091) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_6183 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6182 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6088 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6089 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6182))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6183) .cse6 v_ArrVal_6089) (select (select (store .cse7 .cse6 v_ArrVal_6088) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6090))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd (_ bv12 32) .cse5)))))) is different from false [2024-11-28 03:07:27,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [112470569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:27,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:07:27,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-11-28 03:07:27,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110896797] [2024-11-28 03:07:27,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:07:27,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:07:27,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:07:27,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:07:27,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=164, Unknown=21, NotChecked=264, Total=506 [2024-11-28 03:07:27,500 INFO L87 Difference]: Start difference. First operand 1243 states and 1339 transitions. Second operand has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 11 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:08:49,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:49,189 INFO L93 Difference]: Finished difference Result 1614 states and 1737 transitions. [2024-11-28 03:08:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:08:49,190 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 11 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2024-11-28 03:08:49,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:49,193 INFO L225 Difference]: With dead ends: 1614 [2024-11-28 03:08:49,193 INFO L226 Difference]: Without dead ends: 1614 [2024-11-28 03:08:49,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=101, Invalid=329, Unknown=22, NotChecked=360, Total=812 [2024-11-28 03:08:49,195 INFO L435 NwaCegarLoop]: 689 mSDtfsCounter, 727 mSDsluCounter, 3548 mSDsCounter, 0 mSdLazyCounter, 5892 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 4237 SdHoareTripleChecker+Invalid, 5899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 5892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:49,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 4237 Invalid, 5899 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 5892 Invalid, 0 Unknown, 0 Unchecked, 79.9s Time] [2024-11-28 03:08:49,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2024-11-28 03:08:49,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1242. [2024-11-28 03:08:49,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 812 states have (on average 1.6317733990147782) internal successors, (1325), 1232 states have internal predecessors, (1325), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 03:08:49,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1338 transitions. [2024-11-28 03:08:49,216 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1338 transitions. Word has length 126 [2024-11-28 03:08:49,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:49,216 INFO L471 AbstractCegarLoop]: Abstraction has 1242 states and 1338 transitions. [2024-11-28 03:08:49,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 11 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:08:49,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1338 transitions. [2024-11-28 03:08:49,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 03:08:49,218 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:49,218 INFO L218 NwaCegarLoop]: trace histogram [44, 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, 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] [2024-11-28 03:08:49,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-28 03:08:49,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-11-28 03:08:49,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 03:08:49,620 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 03:08:49,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:49,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1654770107, now seen corresponding path program 1 times [2024-11-28 03:08:49,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:08:49,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448121744] [2024-11-28 03:08:49,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:49,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:49,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:49,623 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:49,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 03:08:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:50,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 03:08:50,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:50,555 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 [2024-11-28 03:08:52,241 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:08:52,242 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 [2024-11-28 03:08:52,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:08:56,517 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:08:56,517 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 43 [2024-11-28 03:08:57,343 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:08:57,344 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 43 [2024-11-28 03:08:57,972 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:08:57,972 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 43 [2024-11-28 03:08:58,638 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:08:58,638 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 43 [2024-11-28 03:08:58,767 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 33 treesize of output 15 [2024-11-28 03:08:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:08:59,029 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:08:59,383 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6637) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-28 03:08:59,445 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 03:08:59,534 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6636))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6637)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:08:59,596 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6636))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6637)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:08:59,687 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6635))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6636)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6637)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:08:59,752 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6635))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6636)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6637)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:09:01,704 INFO L349 Elim1Store]: treesize reduction 7, result has 93.2 percent of original size [2024-11-28 03:09:01,704 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 109 treesize of output 108 [2024-11-28 03:09:01,760 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6683 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem36#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6683))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6635)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6636)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6637)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-28 03:09:01,775 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:09:01,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448121744] [2024-11-28 03:09:01,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448121744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:09:01,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1695207430] [2024-11-28 03:09:01,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:01,776 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:09:01,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:09:01,778 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:09:01,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2024-11-28 03:09:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:35,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-28 03:09:35,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:09:35,623 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 [2024-11-28 03:09:37,173 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 03:09:37,173 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 [2024-11-28 03:09:37,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:09:38,694 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 24 treesize of output 12 [2024-11-28 03:09:45,620 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:09:45,621 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 43 [2024-11-28 03:09:46,717 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:09:46,718 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 43 [2024-11-28 03:09:47,662 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:09:47,662 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 43 [2024-11-28 03:09:48,488 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:09:48,489 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 43 [2024-11-28 03:09:48,664 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 33 treesize of output 15 [2024-11-28 03:09:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:09:49,172 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:09:49,934 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7138) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 03:09:50,023 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7137))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:09:50,090 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7137))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:09:50,184 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7136 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7136))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7137)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:09:50,250 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7136 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7136))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7137)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:09:51,999 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7136 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7184))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7136)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7137)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:09:52,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1695207430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:09:52,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:09:52,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2024-11-28 03:09:52,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630469306] [2024-11-28 03:09:52,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:09:52,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:09:52,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:09:52,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:09:52,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=508, Unknown=22, NotChecked=754, Total=1406 [2024-11-28 03:09:52,019 INFO L87 Difference]: Start difference. First operand 1242 states and 1338 transitions. Second operand has 23 states, 20 states have (on average 5.45) internal successors, (109), 22 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:11:00,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:00,626 INFO L93 Difference]: Finished difference Result 1615 states and 1738 transitions. [2024-11-28 03:11:00,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:11:00,627 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 5.45) internal successors, (109), 22 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 129 [2024-11-28 03:11:00,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:00,628 INFO L225 Difference]: With dead ends: 1615 [2024-11-28 03:11:00,629 INFO L226 Difference]: Without dead ends: 1615 [2024-11-28 03:11:00,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=143, Invalid=643, Unknown=22, NotChecked=832, Total=1640 [2024-11-28 03:11:00,629 INFO L435 NwaCegarLoop]: 680 mSDtfsCounter, 726 mSDsluCounter, 5501 mSDsCounter, 0 mSdLazyCounter, 5096 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 6181 SdHoareTripleChecker+Invalid, 5107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:00,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 6181 Invalid, 5107 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 5096 Invalid, 0 Unknown, 0 Unchecked, 67.6s Time] [2024-11-28 03:11:00,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2024-11-28 03:11:00,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1241. [2024-11-28 03:11:00,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 812 states have (on average 1.6305418719211822) internal successors, (1324), 1231 states have internal predecessors, (1324), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-28 03:11:00,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1337 transitions. [2024-11-28 03:11:00,644 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1337 transitions. Word has length 129 [2024-11-28 03:11:00,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:00,644 INFO L471 AbstractCegarLoop]: Abstraction has 1241 states and 1337 transitions. [2024-11-28 03:11:00,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 5.45) internal successors, (109), 22 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:11:00,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1337 transitions. [2024-11-28 03:11:00,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 03:11:00,646 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:00,646 INFO L218 NwaCegarLoop]: trace histogram [44, 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, 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] [2024-11-28 03:11:00,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-28 03:11:00,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2024-11-28 03:11:01,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 03:11:01,048 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-28 03:11:01,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:01,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1654770106, now seen corresponding path program 1 times [2024-11-28 03:11:01,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:11:01,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213082193] [2024-11-28 03:11:01,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:01,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:01,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:01,053 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:01,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 03:11:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:01,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-28 03:11:01,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:03,301 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 [2024-11-28 03:11:03,434 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:11:03,435 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 [2024-11-28 03:11:03,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:11:03,695 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 13 treesize of output 9 [2024-11-28 03:11:04,471 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 22 treesize of output 10 [2024-11-28 03:11:04,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:11:09,858 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:11:09,859 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 62 treesize of output 57 [2024-11-28 03:11:09,888 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 30 treesize of output 13 [2024-11-28 03:11:10,680 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:11:10,681 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 62 treesize of output 57 [2024-11-28 03:11:10,755 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 30 treesize of output 13 [2024-11-28 03:11:11,455 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:11:11,455 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 62 treesize of output 57 [2024-11-28 03:11:11,534 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 30 treesize of output 13 [2024-11-28 03:11:12,209 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:11:12,209 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 62 treesize of output 57 [2024-11-28 03:11:12,284 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 30 treesize of output 13 [2024-11-28 03:11:12,412 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 31 treesize of output 13 [2024-11-28 03:11:12,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:11:12,716 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:11:12,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:11:13,494 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:11:13,591 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 03:11:13,753 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7685))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7684) .cse0 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7684) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7685) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse3) (bvadd (_ bv24 32) .cse3)))))) is different from false [2024-11-28 03:11:13,861 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_7685))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_7684) .cse1 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_7684) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_7685) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse4) (bvadd (_ bv24 32) .cse4))))))) is different from false [2024-11-28 03:11:14,067 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7682 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7683 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7682))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_7685))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7683) .cse0 v_ArrVal_7684) .cse1 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_7682 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7683 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7682))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7683) .cse6 v_ArrVal_7684) (select (select (store .cse7 .cse6 v_ArrVal_7685) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7687))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse5) (bvadd (_ bv24 32) .cse5)))))) is different from false [2024-11-28 03:11:14,353 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_7682 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7683 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_7682))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_7683) .cse2 v_ArrVal_7684) (select (select (store .cse3 .cse2 v_ArrVal_7685) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_7687))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7682 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7683 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_7682))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_7685))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_7683) .cse5 v_ArrVal_7684) .cse6 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))) is different from false [2024-11-28 03:11:22,865 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7682 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7779 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7778 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7683 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7779))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_7682))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7778) .cse1 v_ArrVal_7683) .cse2 v_ArrVal_7684) (select (select (store .cse3 .cse2 v_ArrVal_7685) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_7687))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7682 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7779 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7778 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7683 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7779))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_7682))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_7685))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7778) .cse6 v_ArrVal_7683) .cse7 v_ArrVal_7684) .cse8 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-11-28 03:11:22,915 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:11:22,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213082193] [2024-11-28 03:11:22,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213082193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:11:22,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [970090950] [2024-11-28 03:11:22,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:22,915 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:11:22,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:11:22,917 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:11:22,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c221457-8b62-47b1-81c5-ae570ad3f20c/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process