./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 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/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_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC --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-6497de0 [2024-11-24 01:57:28,506 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:57:28,595 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-24 01:57:28,603 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:57:28,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:57:28,645 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:57:28,646 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:57:28,646 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:57:28,647 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:57:28,647 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:57:28,647 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:57:28,647 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:57:28,648 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:57:28,648 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:57:28,648 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:57:28,648 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:57:28,648 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:57:28,648 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:57:28,648 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:57:28,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:57:28,649 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-24 01:57:28,649 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-24 01:57:28,649 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-24 01:57:28,649 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:57:28,649 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 01:57:28,649 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:57:28,649 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:57:28,649 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:57:28,650 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:57:28,650 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:57:28,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:57:28,650 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:57:28,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:57:28,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:57:28,652 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:57:28,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:57:28,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:57:28,652 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:57:28,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:57:28,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:57:28,653 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:57:28,653 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:57:28,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:57:28,653 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:57:28,653 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:57:28,654 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:57:28,654 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:57:28,654 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_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC 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 [2024-11-24 01:57:29,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:57:29,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:57:29,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:57:29,023 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:57:29,025 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:57:29,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-2.i [2024-11-24 01:57:32,133 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/data/3fa4f8db8/d6e7dc4d51a64241be632be1cb8ba705/FLAGb5276a0ab [2024-11-24 01:57:32,601 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:57:32,602 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-2.i [2024-11-24 01:57:32,630 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/data/3fa4f8db8/d6e7dc4d51a64241be632be1cb8ba705/FLAGb5276a0ab [2024-11-24 01:57:32,656 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/data/3fa4f8db8/d6e7dc4d51a64241be632be1cb8ba705 [2024-11-24 01:57:32,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:57:32,662 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:57:32,664 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:57:32,664 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:57:32,669 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:57:32,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:57:32" (1/1) ... [2024-11-24 01:57:32,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b03588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:32, skipping insertion in model container [2024-11-24 01:57:32,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:57:32" (1/1) ... [2024-11-24 01:57:32,739 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:57:33,151 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,186 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,191 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,196 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,204 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,246 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,246 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,249 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,250 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,253 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,255 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,256 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,257 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,263 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,264 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,267 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,268 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,269 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,270 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,279 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:33,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:57:33,305 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) [2024-11-24 01:57:33,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@11b4bb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:33, skipping insertion in model container [2024-11-24 01:57:33,306 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:57:33,308 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-24 01:57:33,311 INFO L158 Benchmark]: Toolchain (without parser) took 647.41ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 61.9MB in the end (delta: 19.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:57:33,314 INFO L158 Benchmark]: CDTParser took 0.66ms. Allocated memory is still 167.8MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:57:33,315 INFO L158 Benchmark]: CACSL2BoogieTranslator took 643.80ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 61.9MB in the end (delta: 19.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:57:33,316 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66ms. Allocated memory is still 167.8MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 643.80ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 61.9MB in the end (delta: 19.9MB). 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_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/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_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC --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-6497de0 [2024-11-24 01:57:35,915 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:57:36,074 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-24 01:57:36,081 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:57:36,082 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:57:36,114 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:57:36,115 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:57:36,115 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:57:36,116 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:57:36,116 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:57:36,116 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:57:36,116 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:57:36,117 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:57:36,117 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:57:36,117 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:57:36,117 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:57:36,117 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:57:36,117 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:57:36,118 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:57:36,118 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:57:36,118 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-24 01:57:36,118 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-24 01:57:36,118 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-24 01:57:36,118 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:57:36,119 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 01:57:36,119 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-24 01:57:36,119 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-24 01:57:36,119 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:57:36,119 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:57:36,119 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:57:36,119 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:57:36,120 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:57:36,120 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:57:36,120 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:57:36,120 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:57:36,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:57:36,120 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:57:36,120 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:57:36,120 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:57:36,120 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:57:36,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:57:36,121 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:57:36,121 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:57:36,122 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-24 01:57:36,122 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-24 01:57:36,122 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:57:36,122 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:57:36,122 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:57:36,123 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:57:36,123 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_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC 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 [2024-11-24 01:57:36,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:57:36,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:57:36,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:57:36,475 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:57:36,475 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:57:36,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-2.i [2024-11-24 01:57:39,585 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/data/b3aace740/6c8089c77ec54e5b96945eb1b6e645aa/FLAG03d6527a3 [2024-11-24 01:57:39,912 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:57:39,912 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-2.i [2024-11-24 01:57:39,928 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/data/b3aace740/6c8089c77ec54e5b96945eb1b6e645aa/FLAG03d6527a3 [2024-11-24 01:57:40,156 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/data/b3aace740/6c8089c77ec54e5b96945eb1b6e645aa [2024-11-24 01:57:40,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:57:40,162 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:57:40,166 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:57:40,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:57:40,170 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:57:40,171 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:57:40" (1/1) ... [2024-11-24 01:57:40,174 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b3e686b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:40, skipping insertion in model container [2024-11-24 01:57:40,174 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:57:40" (1/1) ... [2024-11-24 01:57:40,237 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:57:40,785 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,845 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,853 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,860 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,873 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,936 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,936 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,940 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,940 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,944 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,945 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,947 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,951 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,962 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,964 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,969 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,973 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,974 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,975 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,981 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:40,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:57:41,013 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-24 01:57:41,031 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:57:41,084 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,120 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,122 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,126 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,140 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,185 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,188 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,191 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,191 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,198 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,199 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,200 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,200 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,204 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,205 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,207 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,208 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,208 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,209 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,212 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:57:41,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:57:41,220 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:57:41,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:57:41,404 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:57:41,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:41 WrapperNode [2024-11-24 01:57:41,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:57:41,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:57:41,406 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:57:41,406 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:57:41,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:41" (1/1) ... [2024-11-24 01:57:41,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:41" (1/1) ... [2024-11-24 01:57:41,498 INFO L138 Inliner]: procedures = 180, calls = 325, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1177 [2024-11-24 01:57:41,498 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:57:41,499 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:57:41,499 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:57:41,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:57:41,520 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:41" (1/1) ... [2024-11-24 01:57:41,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:41" (1/1) ... [2024-11-24 01:57:41,544 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:41" (1/1) ... [2024-11-24 01:57:41,670 INFO L175 MemorySlicer]: Split 302 memory accesses to 3 slices as follows [34, 2, 266]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 62 writes are split as follows [4, 0, 58]. [2024-11-24 01:57:41,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:41" (1/1) ... [2024-11-24 01:57:41,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:41" (1/1) ... [2024-11-24 01:57:41,744 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:41" (1/1) ... [2024-11-24 01:57:41,750 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:41" (1/1) ... [2024-11-24 01:57:41,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:41" (1/1) ... [2024-11-24 01:57:41,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:41" (1/1) ... [2024-11-24 01:57:41,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:41" (1/1) ... [2024-11-24 01:57:41,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:57:41,800 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:57:41,800 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:57:41,800 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:57:41,803 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:41" (1/1) ... [2024-11-24 01:57:41,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:57:41,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:57:41,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:57:41,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:57:41,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-24 01:57:41,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-24 01:57:41,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-24 01:57:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-24 01:57:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-24 01:57:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-24 01:57:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 01:57:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 01:57:41,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-24 01:57:41,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-24 01:57:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-24 01:57:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-24 01:57:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-24 01:57:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-24 01:57:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:57:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:57:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 01:57:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 01:57:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 01:57:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 01:57:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 01:57:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 01:57:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 01:57:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-24 01:57:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-24 01:57:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-24 01:57:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 01:57:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-24 01:57:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-24 01:57:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-24 01:57:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:57:41,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:57:42,216 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:57:42,220 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:57:42,223 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 01:57:42,324 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 01:57:42,357 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 01:57:48,048 INFO L? ?]: Removed 1300 outVars from TransFormulas that were not future-live. [2024-11-24 01:57:48,048 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:57:48,079 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:57:48,079 INFO L312 CfgBuilder]: Removed 41 assume(true) statements. [2024-11-24 01:57:48,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:57:48 BoogieIcfgContainer [2024-11-24 01:57:48,080 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:57:48,082 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:57:48,082 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:57:48,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:57:48,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:57:40" (1/3) ... [2024-11-24 01:57:48,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383d108a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:57:48, skipping insertion in model container [2024-11-24 01:57:48,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:57:41" (2/3) ... [2024-11-24 01:57:48,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383d108a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:57:48, skipping insertion in model container [2024-11-24 01:57:48,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:57:48" (3/3) ... [2024-11-24 01:57:48,089 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test3-2.i [2024-11-24 01:57:48,106 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:57:48,107 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. [2024-11-24 01:57:48,200 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:57:48,216 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;@43935b0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:57:48,216 INFO L334 AbstractCegarLoop]: Starting to check reachability of 630 error locations. [2024-11-24 01:57:48,224 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) [2024-11-24 01:57:48,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-24 01:57:48,228 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:57:48,229 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-24 01:57:48,229 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)] === [2024-11-24 01:57:48,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:48,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1758740, now seen corresponding path program 1 times [2024-11-24 01:57:48,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:57:48,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107252257] [2024-11-24 01:57:48,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:48,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:48,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:57:48,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:57:48,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:57:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:48,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:57:48,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:57:48,564 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 [2024-11-24 01:57:48,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:57:48,568 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:57:48,569 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:57:48,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107252257] [2024-11-24 01:57:48,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107252257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:57:48,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:57:48,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:57:48,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962490769] [2024-11-24 01:57:48,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:57:48,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:57:48,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:57:48,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:57:48,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-24 01:57:48,609 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) [2024-11-24 01:57:52,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:57:52,366 INFO L93 Difference]: Finished difference Result 1833 states and 1957 transitions. [2024-11-24 01:57:52,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:57:52,368 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 [2024-11-24 01:57:52,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:57:52,387 INFO L225 Difference]: With dead ends: 1833 [2024-11-24 01:57:52,387 INFO L226 Difference]: Without dead ends: 1830 [2024-11-24 01:57:52,389 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 [2024-11-24 01:57:52,391 INFO L435 NwaCegarLoop]: 1040 mSDtfsCounter, 617 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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, 3.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:57:52,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 1718 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 946 Invalid, 0 Unknown, 1958 Unchecked, 3.6s Time] [2024-11-24 01:57:52,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2024-11-24 01:57:52,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1248. [2024-11-24 01:57:52,491 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) [2024-11-24 01:57:52,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1316 transitions. [2024-11-24 01:57:52,500 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1316 transitions. Word has length 4 [2024-11-24 01:57:52,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:57:52,501 INFO L471 AbstractCegarLoop]: Abstraction has 1248 states and 1316 transitions. [2024-11-24 01:57:52,501 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) [2024-11-24 01:57:52,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1316 transitions. [2024-11-24 01:57:52,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-24 01:57:52,501 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:57:52,501 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-24 01:57:52,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:57:52,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:52,702 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)] === [2024-11-24 01:57:52,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:52,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1756837, now seen corresponding path program 1 times [2024-11-24 01:57:52,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:57:52,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588189020] [2024-11-24 01:57:52,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:52,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:52,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:57:52,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:57:52,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:57:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:52,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:57:52,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:57:52,887 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 [2024-11-24 01:57:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:57:52,905 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:57:52,906 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:57:52,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588189020] [2024-11-24 01:57:52,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588189020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:57:52,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:57:52,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:57:52,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23192397] [2024-11-24 01:57:52,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:57:52,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:57:52,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:57:52,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:57:52,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:57:52,909 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) [2024-11-24 01:57:55,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:57:55,423 INFO L93 Difference]: Finished difference Result 1434 states and 1513 transitions. [2024-11-24 01:57:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:57:55,424 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 [2024-11-24 01:57:55,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:57:55,429 INFO L225 Difference]: With dead ends: 1434 [2024-11-24 01:57:55,429 INFO L226 Difference]: Without dead ends: 1434 [2024-11-24 01:57:55,429 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 [2024-11-24 01:57:55,430 INFO L435 NwaCegarLoop]: 754 mSDtfsCounter, 1158 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:57:55,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 918 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-24 01:57:55,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2024-11-24 01:57:55,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1247. [2024-11-24 01:57:55,458 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) [2024-11-24 01:57:55,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1317 transitions. [2024-11-24 01:57:55,464 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1317 transitions. Word has length 4 [2024-11-24 01:57:55,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:57:55,464 INFO L471 AbstractCegarLoop]: Abstraction has 1247 states and 1317 transitions. [2024-11-24 01:57:55,464 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) [2024-11-24 01:57:55,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1317 transitions. [2024-11-24 01:57:55,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-24 01:57:55,465 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:57:55,465 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-24 01:57:55,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:57:55,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:55,666 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)] === [2024-11-24 01:57:55,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:55,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1756838, now seen corresponding path program 1 times [2024-11-24 01:57:55,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:57:55,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251785537] [2024-11-24 01:57:55,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:55,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:55,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:57:55,670 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:57:55,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:57:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:55,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:57:55,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:57:55,833 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 [2024-11-24 01:57:55,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:57:55,865 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:57:55,865 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:57:55,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251785537] [2024-11-24 01:57:55,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251785537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:57:55,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:57:55,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:57:55,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480184120] [2024-11-24 01:57:55,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:57:55,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:57:55,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:57:55,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:57:55,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:57:55,866 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) [2024-11-24 01:57:59,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:57:59,735 INFO L93 Difference]: Finished difference Result 1853 states and 1968 transitions. [2024-11-24 01:57:59,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:57:59,736 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 [2024-11-24 01:57:59,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:57:59,743 INFO L225 Difference]: With dead ends: 1853 [2024-11-24 01:57:59,743 INFO L226 Difference]: Without dead ends: 1853 [2024-11-24 01:57:59,743 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 [2024-11-24 01:57:59,745 INFO L435 NwaCegarLoop]: 1019 mSDtfsCounter, 645 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s 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, 3.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:57:59,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1711 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-24 01:57:59,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2024-11-24 01:57:59,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1457. [2024-11-24 01:57:59,779 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) [2024-11-24 01:57:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1742 transitions. [2024-11-24 01:57:59,786 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1742 transitions. Word has length 4 [2024-11-24 01:57:59,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:57:59,787 INFO L471 AbstractCegarLoop]: Abstraction has 1457 states and 1742 transitions. [2024-11-24 01:57:59,787 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) [2024-11-24 01:57:59,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1742 transitions. [2024-11-24 01:57:59,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-24 01:57:59,788 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:57:59,788 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:57:59,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:57:59,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:59,993 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)] === [2024-11-24 01:57:59,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:59,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1599592659, now seen corresponding path program 1 times [2024-11-24 01:57:59,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:57:59,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237273582] [2024-11-24 01:57:59,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:59,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:59,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:00,001 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:00,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:58:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:00,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:58:00,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:00,195 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 [2024-11-24 01:58:00,312 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-24 01:58:00,313 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 [2024-11-24 01:58:00,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:00,422 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:58:00,422 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:58:00,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237273582] [2024-11-24 01:58:00,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237273582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:00,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:00,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:58:00,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147498856] [2024-11-24 01:58:00,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:00,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:58:00,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:58:00,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:58:00,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:58:00,423 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) [2024-11-24 01:58:07,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:07,109 INFO L93 Difference]: Finished difference Result 2745 states and 2921 transitions. [2024-11-24 01:58:07,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:58:07,110 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 [2024-11-24 01:58:07,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:07,118 INFO L225 Difference]: With dead ends: 2745 [2024-11-24 01:58:07,119 INFO L226 Difference]: Without dead ends: 2745 [2024-11-24 01:58:07,119 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 [2024-11-24 01:58:07,122 INFO L435 NwaCegarLoop]: 1248 mSDtfsCounter, 1584 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s 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, 6.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:58:07,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 2629 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-24 01:58:07,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2024-11-24 01:58:07,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 1606. [2024-11-24 01:58:07,171 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) [2024-11-24 01:58:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2029 transitions. [2024-11-24 01:58:07,207 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2029 transitions. Word has length 9 [2024-11-24 01:58:07,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:07,207 INFO L471 AbstractCegarLoop]: Abstraction has 1606 states and 2029 transitions. [2024-11-24 01:58:07,207 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) [2024-11-24 01:58:07,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2029 transitions. [2024-11-24 01:58:07,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-24 01:58:07,208 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:07,208 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:58:07,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 01:58:07,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:07,409 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)] === [2024-11-24 01:58:07,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:07,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1952235122, now seen corresponding path program 1 times [2024-11-24 01:58:07,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:58:07,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911285723] [2024-11-24 01:58:07,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:07,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:07,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:07,412 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:07,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:58:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:07,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:58:07,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:07,586 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 [2024-11-24 01:58:07,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:07,604 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:58:07,604 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:58:07,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911285723] [2024-11-24 01:58:07,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911285723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:07,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:07,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:58:07,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574300749] [2024-11-24 01:58:07,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:07,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:58:07,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:58:07,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:58:07,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:58:07,606 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) [2024-11-24 01:58:10,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:10,288 INFO L93 Difference]: Finished difference Result 2151 states and 2802 transitions. [2024-11-24 01:58:10,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:58:10,289 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 [2024-11-24 01:58:10,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:10,298 INFO L225 Difference]: With dead ends: 2151 [2024-11-24 01:58:10,298 INFO L226 Difference]: Without dead ends: 2151 [2024-11-24 01:58:10,299 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 [2024-11-24 01:58:10,301 INFO L435 NwaCegarLoop]: 1177 mSDtfsCounter, 941 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:58:10,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 1533 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-24 01:58:10,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2024-11-24 01:58:10,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1558. [2024-11-24 01:58:10,345 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) [2024-11-24 01:58:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 1970 transitions. [2024-11-24 01:58:10,353 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 1970 transitions. Word has length 10 [2024-11-24 01:58:10,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:10,354 INFO L471 AbstractCegarLoop]: Abstraction has 1558 states and 1970 transitions. [2024-11-24 01:58:10,354 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) [2024-11-24 01:58:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 1970 transitions. [2024-11-24 01:58:10,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-24 01:58:10,354 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:10,355 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:58:10,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:58:10,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:10,556 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)] === [2024-11-24 01:58:10,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:10,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1952235123, now seen corresponding path program 1 times [2024-11-24 01:58:10,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:58:10,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [419383360] [2024-11-24 01:58:10,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:10,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:10,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:10,563 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:10,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:58:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:10,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:58:10,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:10,766 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 [2024-11-24 01:58:10,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:10,804 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:58:10,805 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:58:10,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419383360] [2024-11-24 01:58:10,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419383360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:10,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:10,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:58:10,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819412686] [2024-11-24 01:58:10,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:10,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:58:10,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:58:10,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:58:10,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:58:10,807 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) [2024-11-24 01:58:14,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:14,508 INFO L93 Difference]: Finished difference Result 2251 states and 2902 transitions. [2024-11-24 01:58:14,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:58:14,509 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 [2024-11-24 01:58:14,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:14,516 INFO L225 Difference]: With dead ends: 2251 [2024-11-24 01:58:14,516 INFO L226 Difference]: Without dead ends: 2251 [2024-11-24 01:58:14,516 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 [2024-11-24 01:58:14,517 INFO L435 NwaCegarLoop]: 1364 mSDtfsCounter, 703 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:58:14,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1895 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-24 01:58:14,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2024-11-24 01:58:14,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 1585. [2024-11-24 01:58:14,549 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) [2024-11-24 01:58:14,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2023 transitions. [2024-11-24 01:58:14,561 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2023 transitions. Word has length 10 [2024-11-24 01:58:14,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:14,562 INFO L471 AbstractCegarLoop]: Abstraction has 1585 states and 2023 transitions. [2024-11-24 01:58:14,562 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) [2024-11-24 01:58:14,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2023 transitions. [2024-11-24 01:58:14,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-24 01:58:14,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:14,563 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:58:14,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 01:58:14,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:14,767 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)] === [2024-11-24 01:58:14,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:14,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2110605453, now seen corresponding path program 1 times [2024-11-24 01:58:14,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:58:14,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [397104088] [2024-11-24 01:58:14,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:14,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:14,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:14,769 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:14,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:58:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:14,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:58:14,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:15,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:15,032 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:58:15,032 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:58:15,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397104088] [2024-11-24 01:58:15,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397104088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:15,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:15,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:58:15,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274881927] [2024-11-24 01:58:15,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:15,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:58:15,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:58:15,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:58:15,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:58:15,034 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) [2024-11-24 01:58:16,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:16,270 INFO L93 Difference]: Finished difference Result 2203 states and 2778 transitions. [2024-11-24 01:58:16,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:58:16,270 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 [2024-11-24 01:58:16,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:16,274 INFO L225 Difference]: With dead ends: 2203 [2024-11-24 01:58:16,274 INFO L226 Difference]: Without dead ends: 2203 [2024-11-24 01:58:16,274 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 [2024-11-24 01:58:16,275 INFO L435 NwaCegarLoop]: 1385 mSDtfsCounter, 638 mSDsluCounter, 2402 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:58:16,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 3787 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 01:58:16,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2024-11-24 01:58:16,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 1843. [2024-11-24 01:58:16,307 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) [2024-11-24 01:58:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2541 transitions. [2024-11-24 01:58:16,313 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2541 transitions. Word has length 12 [2024-11-24 01:58:16,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:16,314 INFO L471 AbstractCegarLoop]: Abstraction has 1843 states and 2541 transitions. [2024-11-24 01:58:16,314 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) [2024-11-24 01:58:16,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2541 transitions. [2024-11-24 01:58:16,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-24 01:58:16,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:16,315 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:58:16,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-24 01:58:16,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:16,515 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)] === [2024-11-24 01:58:16,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:16,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1789694881, now seen corresponding path program 1 times [2024-11-24 01:58:16,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:58:16,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617113682] [2024-11-24 01:58:16,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:16,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:16,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:16,518 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:16,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:58:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:16,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:58:16,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:16,682 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 [2024-11-24 01:58:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:16,737 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:58:16,737 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:58:16,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617113682] [2024-11-24 01:58:16,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617113682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:16,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:16,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:58:16,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123506317] [2024-11-24 01:58:16,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:16,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:58:16,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:58:16,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:58:16,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:58:16,739 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) [2024-11-24 01:58:19,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:19,976 INFO L93 Difference]: Finished difference Result 2028 states and 2669 transitions. [2024-11-24 01:58:19,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:58:19,977 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 [2024-11-24 01:58:19,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:19,983 INFO L225 Difference]: With dead ends: 2028 [2024-11-24 01:58:19,984 INFO L226 Difference]: Without dead ends: 2028 [2024-11-24 01:58:19,984 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 [2024-11-24 01:58:19,985 INFO L435 NwaCegarLoop]: 711 mSDtfsCounter, 1156 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 3.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:58:19,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 1473 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-24 01:58:19,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2024-11-24 01:58:20,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1820. [2024-11-24 01:58:20,015 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) [2024-11-24 01:58:20,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2449 transitions. [2024-11-24 01:58:20,019 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2449 transitions. Word has length 14 [2024-11-24 01:58:20,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:20,020 INFO L471 AbstractCegarLoop]: Abstraction has 1820 states and 2449 transitions. [2024-11-24 01:58:20,020 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) [2024-11-24 01:58:20,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2449 transitions. [2024-11-24 01:58:20,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-24 01:58:20,021 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:20,021 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:58:20,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 01:58:20,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:20,222 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)] === [2024-11-24 01:58:20,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:20,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1789694880, now seen corresponding path program 1 times [2024-11-24 01:58:20,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:58:20,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939520807] [2024-11-24 01:58:20,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:20,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:20,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:20,225 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:20,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:58:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:20,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:58:20,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:20,398 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 [2024-11-24 01:58:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:20,526 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:58:20,526 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:58:20,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939520807] [2024-11-24 01:58:20,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939520807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:20,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:20,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:58:20,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615660819] [2024-11-24 01:58:20,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:20,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:58:20,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:58:20,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:58:20,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:58:20,529 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) [2024-11-24 01:58:25,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:25,800 INFO L93 Difference]: Finished difference Result 2152 states and 2603 transitions. [2024-11-24 01:58:25,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:58:25,801 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 [2024-11-24 01:58:25,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:25,805 INFO L225 Difference]: With dead ends: 2152 [2024-11-24 01:58:25,805 INFO L226 Difference]: Without dead ends: 2152 [2024-11-24 01:58:25,805 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 [2024-11-24 01:58:25,806 INFO L435 NwaCegarLoop]: 968 mSDtfsCounter, 623 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s 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, 5.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:58:25,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 2208 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-24 01:58:25,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2024-11-24 01:58:25,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1769. [2024-11-24 01:58:25,834 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) [2024-11-24 01:58:25,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 2352 transitions. [2024-11-24 01:58:25,838 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 2352 transitions. Word has length 14 [2024-11-24 01:58:25,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:25,838 INFO L471 AbstractCegarLoop]: Abstraction has 1769 states and 2352 transitions. [2024-11-24 01:58:25,838 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) [2024-11-24 01:58:25,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 2352 transitions. [2024-11-24 01:58:25,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-24 01:58:25,839 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:25,839 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:58:25,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 01:58:26,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:26,040 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)] === [2024-11-24 01:58:26,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:26,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1909716041, now seen corresponding path program 1 times [2024-11-24 01:58:26,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:58:26,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837872361] [2024-11-24 01:58:26,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:26,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:26,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:26,048 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:26,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:58:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:26,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:58:26,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:26,231 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:58:26,231 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:58:26,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837872361] [2024-11-24 01:58:26,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837872361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:26,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:26,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:58:26,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098827811] [2024-11-24 01:58:26,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:26,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:58:26,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:58:26,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:58:26,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:58:26,233 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) [2024-11-24 01:58:26,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:26,313 INFO L93 Difference]: Finished difference Result 1697 states and 2229 transitions. [2024-11-24 01:58:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:58:26,314 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 [2024-11-24 01:58:26,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:26,318 INFO L225 Difference]: With dead ends: 1697 [2024-11-24 01:58:26,318 INFO L226 Difference]: Without dead ends: 1697 [2024-11-24 01:58:26,318 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 [2024-11-24 01:58:26,318 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 [2024-11-24 01:58:26,319 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] [2024-11-24 01:58:26,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2024-11-24 01:58:26,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1697. [2024-11-24 01:58:26,342 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) [2024-11-24 01:58:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2229 transitions. [2024-11-24 01:58:26,346 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2229 transitions. Word has length 16 [2024-11-24 01:58:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:26,346 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 2229 transitions. [2024-11-24 01:58:26,346 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) [2024-11-24 01:58:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2229 transitions. [2024-11-24 01:58:26,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-24 01:58:26,347 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:26,347 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:58:26,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 01:58:26,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:26,548 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)] === [2024-11-24 01:58:26,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:26,548 INFO L85 PathProgramCache]: Analyzing trace with hash -170886023, now seen corresponding path program 1 times [2024-11-24 01:58:26,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:58:26,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481096853] [2024-11-24 01:58:26,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:26,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:26,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:26,550 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:26,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:58:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:26,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:58:26,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:26,876 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 [2024-11-24 01:58:26,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:26,876 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:58:26,877 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:58:26,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481096853] [2024-11-24 01:58:26,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481096853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:26,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:26,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:58:26,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309828786] [2024-11-24 01:58:26,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:26,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:58:26,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:58:26,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:58:26,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-24 01:58:26,878 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) [2024-11-24 01:58:29,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:29,083 INFO L93 Difference]: Finished difference Result 1989 states and 2596 transitions. [2024-11-24 01:58:29,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:58:29,084 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 [2024-11-24 01:58:29,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:29,088 INFO L225 Difference]: With dead ends: 1989 [2024-11-24 01:58:29,088 INFO L226 Difference]: Without dead ends: 1981 [2024-11-24 01:58:29,088 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 [2024-11-24 01:58:29,089 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 [2024-11-24 01:58:29,089 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] [2024-11-24 01:58:29,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2024-11-24 01:58:29,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1755. [2024-11-24 01:58:29,109 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) [2024-11-24 01:58:29,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2293 transitions. [2024-11-24 01:58:29,113 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2293 transitions. Word has length 17 [2024-11-24 01:58:29,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:29,113 INFO L471 AbstractCegarLoop]: Abstraction has 1755 states and 2293 transitions. [2024-11-24 01:58:29,113 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) [2024-11-24 01:58:29,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2293 transitions. [2024-11-24 01:58:29,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-24 01:58:29,114 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:29,114 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] [2024-11-24 01:58:29,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 01:58:29,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:29,314 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)] === [2024-11-24 01:58:29,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:29,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2113969666, now seen corresponding path program 1 times [2024-11-24 01:58:29,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:58:29,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673235980] [2024-11-24 01:58:29,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:29,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:29,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:29,319 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:29,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 01:58:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:29,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:58:29,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:29,518 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 [2024-11-24 01:58:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:29,646 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:58:29,646 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:58:29,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673235980] [2024-11-24 01:58:29,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673235980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:29,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:29,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:58:29,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276051238] [2024-11-24 01:58:29,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:29,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:58:29,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:58:29,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:58:29,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:58:29,648 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) [2024-11-24 01:58:34,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:34,447 INFO L93 Difference]: Finished difference Result 2406 states and 3115 transitions. [2024-11-24 01:58:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:58:34,448 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 [2024-11-24 01:58:34,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:34,455 INFO L225 Difference]: With dead ends: 2406 [2024-11-24 01:58:34,456 INFO L226 Difference]: Without dead ends: 2406 [2024-11-24 01:58:34,456 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 [2024-11-24 01:58:34,457 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 [2024-11-24 01:58:34,457 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] [2024-11-24 01:58:34,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2024-11-24 01:58:34,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 1871. [2024-11-24 01:58:34,492 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) [2024-11-24 01:58:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 2479 transitions. [2024-11-24 01:58:34,495 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 2479 transitions. Word has length 20 [2024-11-24 01:58:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:34,496 INFO L471 AbstractCegarLoop]: Abstraction has 1871 states and 2479 transitions. [2024-11-24 01:58:34,496 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) [2024-11-24 01:58:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 2479 transitions. [2024-11-24 01:58:34,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-24 01:58:34,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:34,497 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] [2024-11-24 01:58:34,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 01:58:34,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:34,701 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)] === [2024-11-24 01:58:34,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:34,701 INFO L85 PathProgramCache]: Analyzing trace with hash 2113969665, now seen corresponding path program 1 times [2024-11-24 01:58:34,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:58:34,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500673720] [2024-11-24 01:58:34,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:34,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:34,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:34,703 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:34,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 01:58:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:34,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:58:34,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:34,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:34,954 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:58:34,954 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:58:34,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500673720] [2024-11-24 01:58:34,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500673720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:34,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:34,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:58:34,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685301503] [2024-11-24 01:58:34,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:34,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:58:34,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:58:34,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:58:34,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:58:34,956 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) [2024-11-24 01:58:38,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:38,235 INFO L93 Difference]: Finished difference Result 2306 states and 2976 transitions. [2024-11-24 01:58:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:58:38,236 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 [2024-11-24 01:58:38,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:38,243 INFO L225 Difference]: With dead ends: 2306 [2024-11-24 01:58:38,243 INFO L226 Difference]: Without dead ends: 2306 [2024-11-24 01:58:38,243 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 [2024-11-24 01:58:38,244 INFO L435 NwaCegarLoop]: 1028 mSDtfsCounter, 908 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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, 3.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:58:38,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 2053 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-24 01:58:38,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2024-11-24 01:58:38,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 1848. [2024-11-24 01:58:38,262 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) [2024-11-24 01:58:38,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 2387 transitions. [2024-11-24 01:58:38,264 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 2387 transitions. Word has length 20 [2024-11-24 01:58:38,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:38,264 INFO L471 AbstractCegarLoop]: Abstraction has 1848 states and 2387 transitions. [2024-11-24 01:58:38,265 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) [2024-11-24 01:58:38,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 2387 transitions. [2024-11-24 01:58:38,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-24 01:58:38,266 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:38,266 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] [2024-11-24 01:58:38,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-24 01:58:38,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:38,468 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)] === [2024-11-24 01:58:38,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:38,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1029891552, now seen corresponding path program 1 times [2024-11-24 01:58:38,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:58:38,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732823888] [2024-11-24 01:58:38,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:38,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:38,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:38,474 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:38,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 01:58:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:38,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:58:38,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:38,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-24 01:58:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:39,021 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:58:39,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:39,765 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:58:39,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732823888] [2024-11-24 01:58:39,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732823888] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:58:39,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:58:39,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-24 01:58:39,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074864871] [2024-11-24 01:58:39,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:58:39,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:58:39,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:58:39,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:58:39,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:58:39,767 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) [2024-11-24 01:58:52,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:52,102 INFO L93 Difference]: Finished difference Result 2745 states and 3519 transitions. [2024-11-24 01:58:52,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:58:52,103 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 [2024-11-24 01:58:52,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:52,110 INFO L225 Difference]: With dead ends: 2745 [2024-11-24 01:58:52,110 INFO L226 Difference]: Without dead ends: 2745 [2024-11-24 01:58:52,110 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 [2024-11-24 01:58:52,111 INFO L435 NwaCegarLoop]: 1332 mSDtfsCounter, 1457 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 2859 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s 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, 12.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:58:52,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1459 Valid, 4044 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2859 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2024-11-24 01:58:52,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2024-11-24 01:58:52,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2014. [2024-11-24 01:58:52,150 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) [2024-11-24 01:58:52,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 2621 transitions. [2024-11-24 01:58:52,154 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 2621 transitions. Word has length 39 [2024-11-24 01:58:52,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:52,154 INFO L471 AbstractCegarLoop]: Abstraction has 2014 states and 2621 transitions. [2024-11-24 01:58:52,155 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) [2024-11-24 01:58:52,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 2621 transitions. [2024-11-24 01:58:52,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-24 01:58:52,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:52,156 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] [2024-11-24 01:58:52,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-24 01:58:52,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:52,357 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)] === [2024-11-24 01:58:52,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:52,358 INFO L85 PathProgramCache]: Analyzing trace with hash 251367790, now seen corresponding path program 1 times [2024-11-24 01:58:52,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:58:52,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765565956] [2024-11-24 01:58:52,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:52,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:52,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:52,360 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:52,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 01:58:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:52,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:58:52,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:52,618 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:58:52,618 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:58:52,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765565956] [2024-11-24 01:58:52,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765565956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:52,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:52,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:58:52,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143318284] [2024-11-24 01:58:52,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:52,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:58:52,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:58:52,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:58:52,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:58:52,621 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) [2024-11-24 01:58:52,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:52,722 INFO L93 Difference]: Finished difference Result 2016 states and 2297 transitions. [2024-11-24 01:58:52,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:58:52,722 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 [2024-11-24 01:58:52,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:52,733 INFO L225 Difference]: With dead ends: 2016 [2024-11-24 01:58:52,735 INFO L226 Difference]: Without dead ends: 2016 [2024-11-24 01:58:52,735 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 [2024-11-24 01:58:52,736 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 [2024-11-24 01:58:52,739 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] [2024-11-24 01:58:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2024-11-24 01:58:52,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1639. [2024-11-24 01:58:52,763 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) [2024-11-24 01:58:52,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 1889 transitions. [2024-11-24 01:58:52,766 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 1889 transitions. Word has length 49 [2024-11-24 01:58:52,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:52,768 INFO L471 AbstractCegarLoop]: Abstraction has 1639 states and 1889 transitions. [2024-11-24 01:58:52,768 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) [2024-11-24 01:58:52,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 1889 transitions. [2024-11-24 01:58:52,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-24 01:58:52,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:52,771 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] [2024-11-24 01:58:52,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-24 01:58:52,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:52,972 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)] === [2024-11-24 01:58:52,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:52,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2082023574, now seen corresponding path program 1 times [2024-11-24 01:58:52,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:58:52,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538312620] [2024-11-24 01:58:52,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:52,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:52,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:52,976 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:52,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 01:58:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:53,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:58:53,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:53,263 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:58:53,263 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:58:53,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538312620] [2024-11-24 01:58:53,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538312620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:53,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:53,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:58:53,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214727998] [2024-11-24 01:58:53,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:53,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:58:53,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:58:53,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:58:53,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:58:53,265 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) [2024-11-24 01:58:53,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:53,361 INFO L93 Difference]: Finished difference Result 1621 states and 1859 transitions. [2024-11-24 01:58:53,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:58:53,362 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 [2024-11-24 01:58:53,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:53,366 INFO L225 Difference]: With dead ends: 1621 [2024-11-24 01:58:53,367 INFO L226 Difference]: Without dead ends: 1621 [2024-11-24 01:58:53,367 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 [2024-11-24 01:58:53,367 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 [2024-11-24 01:58:53,368 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] [2024-11-24 01:58:53,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2024-11-24 01:58:53,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1621. [2024-11-24 01:58:53,400 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) [2024-11-24 01:58:53,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 1859 transitions. [2024-11-24 01:58:53,406 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 1859 transitions. Word has length 52 [2024-11-24 01:58:53,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:53,407 INFO L471 AbstractCegarLoop]: Abstraction has 1621 states and 1859 transitions. [2024-11-24 01:58:53,407 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) [2024-11-24 01:58:53,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 1859 transitions. [2024-11-24 01:58:53,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 01:58:53,408 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:53,408 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] [2024-11-24 01:58:53,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-24 01:58:53,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:53,609 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)] === [2024-11-24 01:58:53,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:53,609 INFO L85 PathProgramCache]: Analyzing trace with hash 24010691, now seen corresponding path program 1 times [2024-11-24 01:58:53,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:58:53,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274751862] [2024-11-24 01:58:53,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:53,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:53,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:53,621 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:53,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 01:58:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:53,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:58:53,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:53,913 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:58:53,913 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:58:53,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274751862] [2024-11-24 01:58:53,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274751862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:53,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:53,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:58:53,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911171745] [2024-11-24 01:58:53,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:53,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:58:53,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:58:53,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:58:53,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:58:53,915 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) [2024-11-24 01:58:54,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:54,047 INFO L93 Difference]: Finished difference Result 1306 states and 1419 transitions. [2024-11-24 01:58:54,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:58:54,048 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 [2024-11-24 01:58:54,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:54,051 INFO L225 Difference]: With dead ends: 1306 [2024-11-24 01:58:54,052 INFO L226 Difference]: Without dead ends: 1306 [2024-11-24 01:58:54,052 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 [2024-11-24 01:58:54,052 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 [2024-11-24 01:58:54,053 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] [2024-11-24 01:58:54,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2024-11-24 01:58:54,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1304. [2024-11-24 01:58:54,067 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) [2024-11-24 01:58:54,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1417 transitions. [2024-11-24 01:58:54,070 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1417 transitions. Word has length 55 [2024-11-24 01:58:54,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:54,070 INFO L471 AbstractCegarLoop]: Abstraction has 1304 states and 1417 transitions. [2024-11-24 01:58:54,071 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) [2024-11-24 01:58:54,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1417 transitions. [2024-11-24 01:58:54,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-24 01:58:54,072 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:54,072 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] [2024-11-24 01:58:54,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-24 01:58:54,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:54,272 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)] === [2024-11-24 01:58:54,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:54,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1844682466, now seen corresponding path program 1 times [2024-11-24 01:58:54,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:58:54,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484935285] [2024-11-24 01:58:54,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:54,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:54,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:54,275 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:54,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-24 01:58:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:54,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:58:54,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:54,500 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:58:54,501 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:58:54,501 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:58:54,504 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 [2024-11-24 01:58:54,572 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:58:54,572 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 [2024-11-24 01:58:54,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:54,637 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:58:54,638 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:58:54,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484935285] [2024-11-24 01:58:54,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484935285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:54,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:54,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:58:54,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449682962] [2024-11-24 01:58:54,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:54,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:58:54,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:58:54,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:58:54,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:58:54,639 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) [2024-11-24 01:58:55,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:55,183 INFO L93 Difference]: Finished difference Result 1972 states and 2132 transitions. [2024-11-24 01:58:55,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:58:55,184 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 [2024-11-24 01:58:55,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:55,188 INFO L225 Difference]: With dead ends: 1972 [2024-11-24 01:58:55,188 INFO L226 Difference]: Without dead ends: 1969 [2024-11-24 01:58:55,188 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 [2024-11-24 01:58:55,188 INFO L435 NwaCegarLoop]: 1064 mSDtfsCounter, 2424 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2024-11-24 01:58:55,189 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] [2024-11-24 01:58:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2024-11-24 01:58:55,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1251. [2024-11-24 01:58:55,203 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) [2024-11-24 01:58:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1362 transitions. [2024-11-24 01:58:55,205 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1362 transitions. Word has length 60 [2024-11-24 01:58:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:55,205 INFO L471 AbstractCegarLoop]: Abstraction has 1251 states and 1362 transitions. [2024-11-24 01:58:55,205 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) [2024-11-24 01:58:55,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1362 transitions. [2024-11-24 01:58:55,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-24 01:58:55,206 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:55,206 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] [2024-11-24 01:58:55,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-24 01:58:55,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:55,407 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)] === [2024-11-24 01:58:55,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:55,407 INFO L85 PathProgramCache]: Analyzing trace with hash 54784503, now seen corresponding path program 1 times [2024-11-24 01:58:55,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:58:55,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234293243] [2024-11-24 01:58:55,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:55,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:55,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:55,410 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:55,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-24 01:58:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:55,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:58:55,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:55,740 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 [2024-11-24 01:58:56,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:58:56,528 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 [2024-11-24 01:58:56,547 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:58:56,547 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 [2024-11-24 01:58:56,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:56,554 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:58:56,554 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:58:56,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234293243] [2024-11-24 01:58:56,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234293243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:56,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:56,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:58:56,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36223966] [2024-11-24 01:58:56,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:56,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:58:56,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:58:56,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:58:56,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:58:56,558 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) [2024-11-24 01:59:00,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:59:00,940 INFO L93 Difference]: Finished difference Result 1585 states and 1723 transitions. [2024-11-24 01:59:00,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:59:00,940 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 [2024-11-24 01:59:00,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:59:00,943 INFO L225 Difference]: With dead ends: 1585 [2024-11-24 01:59:00,943 INFO L226 Difference]: Without dead ends: 1585 [2024-11-24 01:59:00,943 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 [2024-11-24 01:59:00,943 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, 4.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:59:00,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1860 Valid, 1008 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-24 01:59:00,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2024-11-24 01:59:00,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1176. [2024-11-24 01:59:00,955 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) [2024-11-24 01:59:00,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1250 transitions. [2024-11-24 01:59:00,956 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1250 transitions. Word has length 63 [2024-11-24 01:59:00,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:59:00,957 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1250 transitions. [2024-11-24 01:59:00,957 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) [2024-11-24 01:59:00,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1250 transitions. [2024-11-24 01:59:00,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 01:59:00,957 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:59:00,957 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] [2024-11-24 01:59:00,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-24 01:59:01,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:59:01,158 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)] === [2024-11-24 01:59:01,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:59:01,158 INFO L85 PathProgramCache]: Analyzing trace with hash -2089651903, now seen corresponding path program 1 times [2024-11-24 01:59:01,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:59:01,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564579643] [2024-11-24 01:59:01,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:59:01,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:59:01,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:59:01,160 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:59:01,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-24 01:59:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:59:01,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:59:01,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:59:01,487 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 [2024-11-24 01:59:01,532 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 [2024-11-24 01:59:01,568 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 [2024-11-24 01:59:01,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:59:01,587 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:59:01,587 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:59:01,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564579643] [2024-11-24 01:59:01,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564579643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:59:01,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:59:01,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:59:01,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216704115] [2024-11-24 01:59:01,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:59:01,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:59:01,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:59:01,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:59:01,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:59:01,589 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) [2024-11-24 01:59:04,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:59:04,928 INFO L93 Difference]: Finished difference Result 1175 states and 1249 transitions. [2024-11-24 01:59:04,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:59:04,929 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 [2024-11-24 01:59:04,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:59:04,931 INFO L225 Difference]: With dead ends: 1175 [2024-11-24 01:59:04,931 INFO L226 Difference]: Without dead ends: 1175 [2024-11-24 01:59:04,932 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 [2024-11-24 01:59:04,932 INFO L435 NwaCegarLoop]: 1049 mSDtfsCounter, 2 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s 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, 3.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:59:04,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2719 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-24 01:59:04,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2024-11-24 01:59:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1175. [2024-11-24 01:59:04,940 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) [2024-11-24 01:59:04,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1249 transitions. [2024-11-24 01:59:04,942 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1249 transitions. Word has length 68 [2024-11-24 01:59:04,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:59:04,942 INFO L471 AbstractCegarLoop]: Abstraction has 1175 states and 1249 transitions. [2024-11-24 01:59:04,942 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) [2024-11-24 01:59:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1249 transitions. [2024-11-24 01:59:04,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 01:59:04,942 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:59:04,942 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] [2024-11-24 01:59:04,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-24 01:59:05,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:59:05,143 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)] === [2024-11-24 01:59:05,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:59:05,143 INFO L85 PathProgramCache]: Analyzing trace with hash -2089651902, now seen corresponding path program 1 times [2024-11-24 01:59:05,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:59:05,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298922931] [2024-11-24 01:59:05,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:59:05,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:59:05,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:59:05,146 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:59:05,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-24 01:59:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:59:05,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 01:59:05,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:59:05,451 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 [2024-11-24 01:59:05,470 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 [2024-11-24 01:59:05,475 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 [2024-11-24 01:59:05,531 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 [2024-11-24 01:59:05,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:59:05,556 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:59:05,556 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:59:05,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298922931] [2024-11-24 01:59:05,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298922931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:59:05,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:59:05,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:59:05,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784791917] [2024-11-24 01:59:05,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:59:05,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:59:05,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:59:05,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:59:05,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:59:05,558 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) [2024-11-24 01:59:09,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:59:09,927 INFO L93 Difference]: Finished difference Result 1174 states and 1248 transitions. [2024-11-24 01:59:09,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:59:09,928 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 [2024-11-24 01:59:09,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:59:09,931 INFO L225 Difference]: With dead ends: 1174 [2024-11-24 01:59:09,931 INFO L226 Difference]: Without dead ends: 1174 [2024-11-24 01:59:09,931 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 [2024-11-24 01:59:09,932 INFO L435 NwaCegarLoop]: 1049 mSDtfsCounter, 1 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s 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 [2024-11-24 01:59:09,932 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] [2024-11-24 01:59:09,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2024-11-24 01:59:09,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1174. [2024-11-24 01:59:09,944 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) [2024-11-24 01:59:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1248 transitions. [2024-11-24 01:59:09,946 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1248 transitions. Word has length 68 [2024-11-24 01:59:09,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:59:09,946 INFO L471 AbstractCegarLoop]: Abstraction has 1174 states and 1248 transitions. [2024-11-24 01:59:09,947 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) [2024-11-24 01:59:09,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1248 transitions. [2024-11-24 01:59:09,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-24 01:59:09,947 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:59:09,947 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] [2024-11-24 01:59:09,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-24 01:59:10,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:59:10,148 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)] === [2024-11-24 01:59:10,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:59:10,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2059159177, now seen corresponding path program 1 times [2024-11-24 01:59:10,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:59:10,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [830801637] [2024-11-24 01:59:10,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:59:10,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:59:10,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:59:10,154 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:59:10,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-24 01:59:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:59:10,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:59:10,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:59:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:59:10,511 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:59:10,511 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:59:10,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830801637] [2024-11-24 01:59:10,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830801637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:59:10,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:59:10,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:59:10,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577050184] [2024-11-24 01:59:10,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:59:10,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:59:10,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:59:10,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:59:10,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:59:10,514 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) [2024-11-24 01:59:10,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:59:10,576 INFO L93 Difference]: Finished difference Result 1177 states and 1252 transitions. [2024-11-24 01:59:10,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:59:10,577 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 [2024-11-24 01:59:10,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:59:10,582 INFO L225 Difference]: With dead ends: 1177 [2024-11-24 01:59:10,582 INFO L226 Difference]: Without dead ends: 1177 [2024-11-24 01:59:10,582 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 [2024-11-24 01:59:10,584 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 [2024-11-24 01:59:10,584 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] [2024-11-24 01:59:10,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2024-11-24 01:59:10,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1177. [2024-11-24 01:59:10,600 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) [2024-11-24 01:59:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1252 transitions. [2024-11-24 01:59:10,602 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1252 transitions. Word has length 76 [2024-11-24 01:59:10,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:59:10,603 INFO L471 AbstractCegarLoop]: Abstraction has 1177 states and 1252 transitions. [2024-11-24 01:59:10,603 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) [2024-11-24 01:59:10,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1252 transitions. [2024-11-24 01:59:10,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-24 01:59:10,604 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:59:10,604 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] [2024-11-24 01:59:10,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-24 01:59:10,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:59:10,808 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)] === [2024-11-24 01:59:10,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:59:10,808 INFO L85 PathProgramCache]: Analyzing trace with hash 107336866, now seen corresponding path program 1 times [2024-11-24 01:59:10,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:59:10,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215664475] [2024-11-24 01:59:10,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:59:10,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:59:10,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:59:10,811 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:59:10,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-24 01:59:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:59:11,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:59:11,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:59:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:59:11,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:59:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:59:11,233 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:59:11,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215664475] [2024-11-24 01:59:11,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215664475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:59:11,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:59:11,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-24 01:59:11,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87596371] [2024-11-24 01:59:11,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:59:11,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:59:11,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:59:11,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:59:11,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:59:11,235 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) [2024-11-24 01:59:11,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:59:11,424 INFO L93 Difference]: Finished difference Result 1189 states and 1269 transitions. [2024-11-24 01:59:11,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:59:11,425 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 [2024-11-24 01:59:11,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:59:11,429 INFO L225 Difference]: With dead ends: 1189 [2024-11-24 01:59:11,429 INFO L226 Difference]: Without dead ends: 1189 [2024-11-24 01:59:11,429 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 [2024-11-24 01:59:11,430 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 [2024-11-24 01:59:11,431 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] [2024-11-24 01:59:11,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2024-11-24 01:59:11,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1187. [2024-11-24 01:59:11,468 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) [2024-11-24 01:59:11,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1267 transitions. [2024-11-24 01:59:11,475 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1267 transitions. Word has length 77 [2024-11-24 01:59:11,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:59:11,475 INFO L471 AbstractCegarLoop]: Abstraction has 1187 states and 1267 transitions. [2024-11-24 01:59:11,476 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) [2024-11-24 01:59:11,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1267 transitions. [2024-11-24 01:59:11,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-24 01:59:11,476 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:59:11,477 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] [2024-11-24 01:59:11,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-24 01:59:11,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:59:11,678 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)] === [2024-11-24 01:59:11,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:59:11,678 INFO L85 PathProgramCache]: Analyzing trace with hash -541358903, now seen corresponding path program 2 times [2024-11-24 01:59:11,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:59:11,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737743427] [2024-11-24 01:59:11,679 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:59:11,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:59:11,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:59:11,681 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:59:11,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-24 01:59:28,611 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:59:28,611 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:59:28,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-24 01:59:28,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:59:28,764 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 [2024-11-24 01:59:28,778 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:59:28,778 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 [2024-11-24 01:59:28,818 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 [2024-11-24 01:59:28,828 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 [2024-11-24 01:59:28,967 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 [2024-11-24 01:59:28,975 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 [2024-11-24 01:59:29,199 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:59:29,199 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 [2024-11-24 01:59:29,206 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 [2024-11-24 01:59:29,264 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 [2024-11-24 01:59:29,273 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 [2024-11-24 01:59:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 01:59:29,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:59:29,751 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:59:29,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737743427] [2024-11-24 01:59:29,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737743427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:59:29,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1841814848] [2024-11-24 01:59:29,751 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:59:29,752 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:59:29,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:59:29,756 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:59:29,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-24 01:59:31,739 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:59:31,739 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:59:31,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:59:31,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:59:32,110 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:59:32,111 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:59:32,605 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:59:32,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1841814848] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:59:32,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:59:32,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2024-11-24 01:59:32,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604623620] [2024-11-24 01:59:32,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:59:32,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-24 01:59:32,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:59:32,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-24 01:59:32,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=502, Unknown=9, NotChecked=0, Total=600 [2024-11-24 01:59:32,612 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) [2024-11-24 01:59:49,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:59:49,516 INFO L93 Difference]: Finished difference Result 1579 states and 1690 transitions. [2024-11-24 01:59:49,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-24 01:59:49,516 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 [2024-11-24 01:59:49,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:59:49,520 INFO L225 Difference]: With dead ends: 1579 [2024-11-24 01:59:49,520 INFO L226 Difference]: Without dead ends: 1569 [2024-11-24 01:59:49,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=322, Invalid=1923, Unknown=11, NotChecked=0, Total=2256 [2024-11-24 01:59:49,521 INFO L435 NwaCegarLoop]: 689 mSDtfsCounter, 808 mSDsluCounter, 6679 mSDsCounter, 0 mSdLazyCounter, 6219 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s 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, 15.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:59:49,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 7368 Invalid, 6247 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 6219 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time] [2024-11-24 01:59:49,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2024-11-24 01:59:49,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1195. [2024-11-24 01:59:49,538 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) [2024-11-24 01:59:49,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1274 transitions. [2024-11-24 01:59:49,540 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1274 transitions. Word has length 80 [2024-11-24 01:59:49,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:59:49,541 INFO L471 AbstractCegarLoop]: Abstraction has 1195 states and 1274 transitions. [2024-11-24 01:59:49,541 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) [2024-11-24 01:59:49,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1274 transitions. [2024-11-24 01:59:49,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-24 01:59:49,542 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:59:49,542 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] [2024-11-24 01:59:49,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-24 01:59:49,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-24 01:59:49,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:59:49,943 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)] === [2024-11-24 01:59:49,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:59:49,943 INFO L85 PathProgramCache]: Analyzing trace with hash 2008958504, now seen corresponding path program 1 times [2024-11-24 01:59:49,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:59:49,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543098443] [2024-11-24 01:59:49,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:59:49,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:59:49,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:59:49,946 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:59:49,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-24 01:59:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:59:50,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-24 01:59:50,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:59:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:59:50,457 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:59:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:59:51,142 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:59:51,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543098443] [2024-11-24 01:59:51,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543098443] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:59:51,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:59:51,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-24 01:59:51,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316375147] [2024-11-24 01:59:51,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:59:51,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-24 01:59:51,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:59:51,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-24 01:59:51,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-24 01:59:51,147 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) [2024-11-24 01:59:53,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:59:53,381 INFO L93 Difference]: Finished difference Result 1219 states and 1313 transitions. [2024-11-24 01:59:53,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-24 01:59:53,382 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 [2024-11-24 01:59:53,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:59:53,384 INFO L225 Difference]: With dead ends: 1219 [2024-11-24 01:59:53,385 INFO L226 Difference]: Without dead ends: 1213 [2024-11-24 01:59:53,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-24 01:59:53,386 INFO L435 NwaCegarLoop]: 1048 mSDtfsCounter, 15 mSDsluCounter, 12539 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:59:53,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 13587 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 01:59:53,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2024-11-24 01:59:53,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1213. [2024-11-24 01:59:53,401 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) [2024-11-24 01:59:53,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1297 transitions. [2024-11-24 01:59:53,403 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1297 transitions. Word has length 86 [2024-11-24 01:59:53,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:59:53,403 INFO L471 AbstractCegarLoop]: Abstraction has 1213 states and 1297 transitions. [2024-11-24 01:59:53,404 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) [2024-11-24 01:59:53,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1297 transitions. [2024-11-24 01:59:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-24 01:59:53,404 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:59:53,404 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] [2024-11-24 01:59:53,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-24 01:59:53,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:59:53,605 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)] === [2024-11-24 01:59:53,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:59:53,605 INFO L85 PathProgramCache]: Analyzing trace with hash -850513688, now seen corresponding path program 2 times [2024-11-24 01:59:53,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:59:53,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1849179539] [2024-11-24 01:59:53,607 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:59:53,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:59:53,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:59:53,609 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:59:53,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-24 02:00:25,376 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 02:00:25,376 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:00:25,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-24 02:00:25,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:00:25,545 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 02:00:25,545 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 [2024-11-24 02:00:25,571 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 [2024-11-24 02:00:26,087 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:00:26,088 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 [2024-11-24 02:00:26,186 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 [2024-11-24 02:00:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-24 02:00:26,221 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:00:26,513 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-24 02:00:26,513 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 [2024-11-24 02:00:26,523 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1849 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1849) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2024-11-24 02:00:26,526 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 02:00:26,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849179539] [2024-11-24 02:00:26,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849179539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:00:26,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1641925592] [2024-11-24 02:00:26,526 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 02:00:26,527 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 02:00:26,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 02:00:26,531 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 02:00:26,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-24 02:00:28,884 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 02:00:28,884 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 02:00:28,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-24 02:00:28,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:00:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:00:30,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:00:33,498 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:00:33,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1641925592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:00:33,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:00:33,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 26, 26] total 60 [2024-11-24 02:00:33,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174014936] [2024-11-24 02:00:33,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:00:33,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-24 02:00:33,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 02:00:33,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-24 02:00:33,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=2962, Unknown=1, NotChecked=118, Total=3782 [2024-11-24 02:00:33,501 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) [2024-11-24 02:01:24,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:01:24,559 INFO L93 Difference]: Finished difference Result 1626 states and 1769 transitions. [2024-11-24 02:01:24,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-24 02:01:24,560 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 [2024-11-24 02:01:24,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:01:24,563 INFO L225 Difference]: With dead ends: 1626 [2024-11-24 02:01:24,563 INFO L226 Difference]: Without dead ends: 1622 [2024-11-24 02:01:24,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3555 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=3763, Invalid=15700, Unknown=1, NotChecked=276, Total=19740 [2024-11-24 02:01:24,569 INFO L435 NwaCegarLoop]: 684 mSDtfsCounter, 840 mSDsluCounter, 23429 mSDsCounter, 0 mSdLazyCounter, 17017 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.1s 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, 39.8s IncrementalHoareTripleChecker+Time [2024-11-24 02:01:24,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 24113 Invalid, 17078 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [61 Valid, 17017 Invalid, 0 Unknown, 0 Unchecked, 39.8s Time] [2024-11-24 02:01:24,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2024-11-24 02:01:24,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1246. [2024-11-24 02:01:24,587 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) [2024-11-24 02:01:24,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1342 transitions. [2024-11-24 02:01:24,590 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1342 transitions. Word has length 98 [2024-11-24 02:01:24,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:01:24,590 INFO L471 AbstractCegarLoop]: Abstraction has 1246 states and 1342 transitions. [2024-11-24 02:01:24,590 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) [2024-11-24 02:01:24,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1342 transitions. [2024-11-24 02:01:24,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-24 02:01:24,592 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:01:24,592 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] [2024-11-24 02:01:24,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-24 02:01:24,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2024-11-24 02:01:24,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 02:01:24,993 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)] === [2024-11-24 02:01:24,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:01:24,993 INFO L85 PathProgramCache]: Analyzing trace with hash -130372418, now seen corresponding path program 1 times [2024-11-24 02:01:24,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 02:01:24,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490881405] [2024-11-24 02:01:24,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:01:24,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:01:24,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:01:24,996 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:01:24,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-24 02:01:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:01:25,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-24 02:01:25,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:01:25,676 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 [2024-11-24 02:01:25,937 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 02:01:25,937 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 [2024-11-24 02:01:25,959 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 [2024-11-24 02:01:26,813 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:01:26,813 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 [2024-11-24 02:01:26,958 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:01:26,958 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 [2024-11-24 02:01:26,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-24 02:01:27,017 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 02:01:27,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:01:27,068 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2508) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-24 02:01:27,079 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2508) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-24 02:01:27,661 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-24 02:01:27,661 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 37 treesize of output 36 [2024-11-24 02:01:27,672 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2554 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem36#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2554))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2508)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-24 02:01:27,675 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 02:01:27,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490881405] [2024-11-24 02:01:27,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490881405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:01:27,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1662166091] [2024-11-24 02:01:27,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:01:27,675 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 02:01:27,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 02:01:27,678 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 02:01:27,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-24 02:01:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:01:32,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-24 02:01:32,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:01:32,065 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 [2024-11-24 02:01:32,300 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-24 02:01:32,301 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 [2024-11-24 02:01:32,392 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 [2024-11-24 02:01:32,700 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 [2024-11-24 02:01:34,317 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:01:34,317 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 [2024-11-24 02:01:34,556 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:01:34,556 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 [2024-11-24 02:01:34,591 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 33 treesize of output 15 [2024-11-24 02:01:34,666 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 02:01:34,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:01:34,687 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 [2024-11-24 02:01:34,703 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 [2024-11-24 02:01:35,244 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 [2024-11-24 02:01:35,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1662166091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:01:35,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 02:01:35,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2024-11-24 02:01:35,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735940674] [2024-11-24 02:01:35,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 02:01:35,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 02:01:35,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 02:01:35,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 02:01:35,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=320, Unknown=6, NotChecked=246, Total=650 [2024-11-24 02:01:35,249 INFO L87 Difference]: Start difference. First operand 1246 states and 1342 transitions. Second operand has 19 states, 16 states have (on average 6.0625) 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) [2024-11-24 02:01:46,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:01:46,879 INFO L93 Difference]: Finished difference Result 1619 states and 1742 transitions. [2024-11-24 02:01:46,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 02:01:46,880 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 6.0625) 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 [2024-11-24 02:01:46,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:01:46,884 INFO L225 Difference]: With dead ends: 1619 [2024-11-24 02:01:46,884 INFO L226 Difference]: Without dead ends: 1619 [2024-11-24 02:01:46,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=425, Unknown=6, NotChecked=282, Total=812 [2024-11-24 02:01:46,885 INFO L435 NwaCegarLoop]: 682 mSDtfsCounter, 736 mSDsluCounter, 4402 mSDsCounter, 0 mSdLazyCounter, 4021 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 5084 SdHoareTripleChecker+Invalid, 4034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:01:46,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 5084 Invalid, 4034 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 4021 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2024-11-24 02:01:46,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2024-11-24 02:01:46,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1245. [2024-11-24 02:01:46,905 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) [2024-11-24 02:01:46,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1341 transitions. [2024-11-24 02:01:46,907 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1341 transitions. Word has length 123 [2024-11-24 02:01:46,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:01:46,908 INFO L471 AbstractCegarLoop]: Abstraction has 1245 states and 1341 transitions. [2024-11-24 02:01:46,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 6.0625) 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) [2024-11-24 02:01:46,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1341 transitions. [2024-11-24 02:01:46,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-24 02:01:46,910 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:01:46,910 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] [2024-11-24 02:01:46,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-24 02:01:47,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2024-11-24 02:01:47,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 02:01:47,311 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)] === [2024-11-24 02:01:47,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:01:47,311 INFO L85 PathProgramCache]: Analyzing trace with hash -130372417, now seen corresponding path program 1 times [2024-11-24 02:01:47,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 02:01:47,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028732136] [2024-11-24 02:01:47,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:01:47,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:01:47,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:01:47,314 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:01:47,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-24 02:01:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:01:47,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-24 02:01:48,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:01:48,017 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 [2024-11-24 02:01:48,222 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 [2024-11-24 02:01:48,246 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 02:01:48,246 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 [2024-11-24 02:01:48,287 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 [2024-11-24 02:01:48,295 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 [2024-11-24 02:01:48,478 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 [2024-11-24 02:01:48,485 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 [2024-11-24 02:01:49,573 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:01:49,573 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 [2024-11-24 02:01:49,609 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 [2024-11-24 02:01:49,788 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:01:49,788 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 [2024-11-24 02:01:49,807 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 [2024-11-24 02:01:49,846 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 [2024-11-24 02:01:49,854 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 [2024-11-24 02:01:49,900 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 02:01:49,900 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:01:50,099 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 [2024-11-24 02:01:50,138 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 [2024-11-24 02:01:52,100 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 [2024-11-24 02:01:52,110 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 02:01:52,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028732136] [2024-11-24 02:01:52,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028732136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:01:52,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1620302635] [2024-11-24 02:01:52,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:01:52,110 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 02:01:52,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 02:01:52,113 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 02:01:52,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-24 02:01:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:01:56,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-24 02:01:56,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:01:56,688 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 [2024-11-24 02:01:56,700 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 [2024-11-24 02:01:57,379 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-24 02:01:57,379 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 [2024-11-24 02:01:57,411 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 02:01:57,411 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 [2024-11-24 02:01:57,498 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 [2024-11-24 02:01:57,505 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 [2024-11-24 02:01:57,681 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 [2024-11-24 02:01:57,777 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 [2024-11-24 02:01:58,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 02:01:58,848 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 [2024-11-24 02:01:59,211 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 [2024-11-24 02:01:59,234 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 [2024-11-24 02:01:59,516 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:01:59,517 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 [2024-11-24 02:01:59,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:01:59,529 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 [2024-11-24 02:01:59,655 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 02:01:59,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:02:00,086 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 [2024-11-24 02:02:27,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1620302635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:02:27,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 02:02:27,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2024-11-24 02:02:27,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446151869] [2024-11-24 02:02:27,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 02:02:27,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 02:02:27,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 02:02:27,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 02:02:27,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=12, NotChecked=144, Total=756 [2024-11-24 02:02:27,352 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) [2024-11-24 02:03:48,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:03:48,361 INFO L93 Difference]: Finished difference Result 1999 states and 2149 transitions. [2024-11-24 02:03:48,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 02:03:48,362 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 [2024-11-24 02:03:48,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:03:48,366 INFO L225 Difference]: With dead ends: 1999 [2024-11-24 02:03:48,366 INFO L226 Difference]: Without dead ends: 1999 [2024-11-24 02:03:48,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=163, Invalid=893, Unknown=12, NotChecked=192, Total=1260 [2024-11-24 02:03:48,367 INFO L435 NwaCegarLoop]: 542 mSDtfsCounter, 1768 mSDsluCounter, 4104 mSDsCounter, 0 mSdLazyCounter, 7009 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1773 SdHoareTripleChecker+Valid, 4646 SdHoareTripleChecker+Invalid, 7030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 7009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.6s IncrementalHoareTripleChecker+Time [2024-11-24 02:03:48,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1773 Valid, 4646 Invalid, 7030 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 7009 Invalid, 0 Unknown, 0 Unchecked, 77.6s Time] [2024-11-24 02:03:48,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2024-11-24 02:03:48,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1244. [2024-11-24 02:03:48,389 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) [2024-11-24 02:03:48,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1340 transitions. [2024-11-24 02:03:48,392 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1340 transitions. Word has length 123 [2024-11-24 02:03:48,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:03:48,392 INFO L471 AbstractCegarLoop]: Abstraction has 1244 states and 1340 transitions. [2024-11-24 02:03:48,393 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) [2024-11-24 02:03:48,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1340 transitions. [2024-11-24 02:03:48,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-24 02:03:48,394 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:03:48,395 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] [2024-11-24 02:03:48,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2024-11-24 02:03:48,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-24 02:03:48,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:03:48,796 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)] === [2024-11-24 02:03:48,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:03:48,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1273941329, now seen corresponding path program 1 times [2024-11-24 02:03:48,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 02:03:48,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182893081] [2024-11-24 02:03:48,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:03:48,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:03:48,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:03:48,801 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:03:48,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-24 02:03:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:03:49,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-24 02:03:49,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:03:50,845 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 02:03:50,845 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 [2024-11-24 02:03:50,984 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 [2024-11-24 02:03:54,677 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:03:54,677 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 [2024-11-24 02:03:55,311 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:03:55,311 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 [2024-11-24 02:03:55,799 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:03:55,799 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 [2024-11-24 02:03:55,907 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 [2024-11-24 02:03:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 02:03:56,108 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:03:56,369 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4495) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-24 02:03:56,414 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4495) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-24 02:03:56,483 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4494 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4494))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4495)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 02:03:56,532 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4494 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4494))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4495)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-24 02:03:58,096 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2024-11-24 02:03:58,096 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 61 treesize of output 60 [2024-11-24 02:03:58,141 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4541 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4494 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem36#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4541))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4494)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4495)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-24 02:03:58,151 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 02:03:58,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182893081] [2024-11-24 02:03:58,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182893081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:03:58,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [568405055] [2024-11-24 02:03:58,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:03:58,152 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 02:03:58,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 02:03:58,154 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 02:03:58,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-24 02:04:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:25,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-24 02:04:25,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:04:25,139 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 [2024-11-24 02:04:26,417 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-24 02:04:26,418 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 [2024-11-24 02:04:26,724 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 [2024-11-24 02:04:27,661 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 [2024-11-24 02:04:33,364 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:04:33,364 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 [2024-11-24 02:04:34,333 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:04:34,334 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 [2024-11-24 02:04:35,057 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:04:35,057 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 [2024-11-24 02:04:35,212 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 [2024-11-24 02:04:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 02:04:35,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:04:35,707 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 [2024-11-24 02:04:35,757 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 [2024-11-24 02:04:35,834 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 [2024-11-24 02:04:35,893 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 [2024-11-24 02:04:37,578 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 [2024-11-24 02:04:37,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [568405055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:04:37,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 02:04:37,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2024-11-24 02:04:37,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719770642] [2024-11-24 02:04:37,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 02:04:37,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 02:04:37,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 02:04:37,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 02:04:37,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=393, Unknown=10, NotChecked=490, Total=992 [2024-11-24 02:04:37,594 INFO L87 Difference]: Start difference. First operand 1244 states and 1340 transitions. Second operand has 21 states, 18 states have (on average 5.944444444444445) 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) [2024-11-24 02:05:26,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:26,717 INFO L93 Difference]: Finished difference Result 1617 states and 1740 transitions. [2024-11-24 02:05:26,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 02:05:26,718 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.944444444444445) 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 [2024-11-24 02:05:26,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:26,720 INFO L225 Difference]: With dead ends: 1617 [2024-11-24 02:05:26,720 INFO L226 Difference]: Without dead ends: 1617 [2024-11-24 02:05:26,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=120, Invalid=510, Unknown=10, NotChecked=550, Total=1190 [2024-11-24 02:05:26,721 INFO L435 NwaCegarLoop]: 682 mSDtfsCounter, 729 mSDsluCounter, 4936 mSDsCounter, 0 mSdLazyCounter, 4556 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 5618 SdHoareTripleChecker+Invalid, 4567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:26,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 5618 Invalid, 4567 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 4556 Invalid, 0 Unknown, 0 Unchecked, 48.3s Time] [2024-11-24 02:05:26,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2024-11-24 02:05:26,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1243. [2024-11-24 02:05:26,738 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) [2024-11-24 02:05:26,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1339 transitions. [2024-11-24 02:05:26,740 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1339 transitions. Word has length 126 [2024-11-24 02:05:26,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:26,740 INFO L471 AbstractCegarLoop]: Abstraction has 1243 states and 1339 transitions. [2024-11-24 02:05:26,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.944444444444445) 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) [2024-11-24 02:05:26,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1339 transitions. [2024-11-24 02:05:26,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-24 02:05:26,741 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:26,741 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] [2024-11-24 02:05:26,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-24 02:05:26,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2024-11-24 02:05:27,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 02:05:27,142 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)] === [2024-11-24 02:05:27,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:27,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1273941328, now seen corresponding path program 1 times [2024-11-24 02:05:27,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 02:05:27,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [321455838] [2024-11-24 02:05:27,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:27,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:27,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:27,146 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:27,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-24 02:05:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:27,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-24 02:05:27,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:29,101 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 [2024-11-24 02:05:29,216 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 02:05:29,216 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 [2024-11-24 02:05:29,358 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 [2024-11-24 02:05:29,400 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 [2024-11-24 02:05:30,044 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 [2024-11-24 02:05:30,066 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 [2024-11-24 02:05:34,933 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:05:34,933 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 [2024-11-24 02:05:34,954 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 [2024-11-24 02:05:35,577 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:05:35,577 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 [2024-11-24 02:05:35,619 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 [2024-11-24 02:05:36,148 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:05:36,149 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 [2024-11-24 02:05:36,217 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 [2024-11-24 02:05:36,324 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 [2024-11-24 02:05:36,345 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 [2024-11-24 02:05:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 02:05:36,558 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:37,166 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 [2024-11-24 02:05:37,259 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 [2024-11-24 02:05:37,490 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 [2024-11-24 02:05:37,645 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5512 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5510))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5509) .cse1 v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5512) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5509) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 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) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-24 02:05:41,576 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 [2024-11-24 02:05:41,606 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 02:05:41,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321455838] [2024-11-24 02:05:41,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321455838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:41,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1192479835] [2024-11-24 02:05:41,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:41,606 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 02:05:41,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 02:05:41,611 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 02:05:41,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-24 02:06:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:08,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-24 02:06:08,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:06:08,959 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 [2024-11-24 02:06:10,141 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 02:06:10,142 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 [2024-11-24 02:06:10,181 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 [2024-11-24 02:06:10,227 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 [2024-11-24 02:06:10,287 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 [2024-11-24 02:06:10,633 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 [2024-11-24 02:06:10,662 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 [2024-11-24 02:06:15,158 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:06:15,158 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 [2024-11-24 02:06:15,180 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 [2024-11-24 02:06:15,614 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:06:15,614 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 [2024-11-24 02:06:15,637 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 [2024-11-24 02:06:15,973 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:06:15,973 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 [2024-11-24 02:06:15,996 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 [2024-11-24 02:06:16,134 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 [2024-11-24 02:06:16,162 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 [2024-11-24 02:06:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 02:06:16,199 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:06:16,403 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6091) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 02:06:16,479 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 [2024-11-24 02:06:16,670 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 [2024-11-24 02:06:16,832 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 [2024-11-24 02:06:20,512 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 [2024-11-24 02:06:20,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1192479835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:20,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 02:06:20,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-11-24 02:06:20,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552107524] [2024-11-24 02:06:20,533 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 02:06:20,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:06:20,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 02:06:20,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:06:20,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=134, Unknown=10, NotChecked=310, Total=506 [2024-11-24 02:06:20,534 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) [2024-11-24 02:07:18,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:07:18,733 INFO L93 Difference]: Finished difference Result 1614 states and 1737 transitions. [2024-11-24 02:07:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 02:07:18,734 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 [2024-11-24 02:07:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:07:18,736 INFO L225 Difference]: With dead ends: 1614 [2024-11-24 02:07:18,736 INFO L226 Difference]: Without dead ends: 1614 [2024-11-24 02:07:18,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=90, Invalid=282, Unknown=10, NotChecked=430, Total=812 [2024-11-24 02:07:18,737 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 727 mSDsluCounter, 3145 mSDsCounter, 0 mSdLazyCounter, 5239 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 3833 SdHoareTripleChecker+Invalid, 5246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 5239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:07:18,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 3833 Invalid, 5246 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 5239 Invalid, 0 Unknown, 0 Unchecked, 57.0s Time] [2024-11-24 02:07:18,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2024-11-24 02:07:18,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1242. [2024-11-24 02:07:18,755 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) [2024-11-24 02:07:18,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1338 transitions. [2024-11-24 02:07:18,757 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1338 transitions. Word has length 126 [2024-11-24 02:07:18,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:07:18,758 INFO L471 AbstractCegarLoop]: Abstraction has 1242 states and 1338 transitions. [2024-11-24 02:07:18,758 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) [2024-11-24 02:07:18,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1338 transitions. [2024-11-24 02:07:18,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 02:07:18,760 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:07:18,760 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] [2024-11-24 02:07:18,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-24 02:07:19,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-11-24 02:07:19,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 02:07:19,162 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)] === [2024-11-24 02:07:19,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:19,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1654770107, now seen corresponding path program 1 times [2024-11-24 02:07:19,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 02:07:19,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215113815] [2024-11-24 02:07:19,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:19,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:07:19,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:07:19,165 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:07:19,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-24 02:07:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:20,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-24 02:07:20,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:07:20,103 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 [2024-11-24 02:07:21,316 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 02:07:21,316 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 [2024-11-24 02:07:21,471 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 [2024-11-24 02:07:25,025 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:07:25,025 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 [2024-11-24 02:07:25,717 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:07:25,717 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 [2024-11-24 02:07:26,243 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:07:26,243 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 [2024-11-24 02:07:26,775 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:07:26,776 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 [2024-11-24 02:07:26,887 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 [2024-11-24 02:07:27,102 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 02:07:27,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:07:27,393 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 [2024-11-24 02:07:27,446 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 [2024-11-24 02:07:27,526 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 [2024-11-24 02:07:27,581 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 [2024-11-24 02:07:27,684 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 [2024-11-24 02:07:27,744 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 [2024-11-24 02:07:29,466 INFO L349 Elim1Store]: treesize reduction 7, result has 93.2 percent of original size [2024-11-24 02:07:29,466 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 [2024-11-24 02:07:29,524 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 [2024-11-24 02:07:29,541 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 02:07:29,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215113815] [2024-11-24 02:07:29,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215113815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:07:29,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1769448851] [2024-11-24 02:07:29,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:29,541 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 02:07:29,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 02:07:29,544 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 02:07:29,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2024-11-24 02:08:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:08:04,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-24 02:08:04,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:08:04,555 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 [2024-11-24 02:08:05,939 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-24 02:08:05,939 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 [2024-11-24 02:08:06,276 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 [2024-11-24 02:08:07,246 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 [2024-11-24 02:08:12,401 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:08:12,401 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 [2024-11-24 02:08:13,224 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:08:13,225 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 [2024-11-24 02:08:13,926 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:08:13,927 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 [2024-11-24 02:08:14,546 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:08:14,546 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 [2024-11-24 02:08:14,668 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 [2024-11-24 02:08:15,012 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 02:08:15,012 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:08:15,095 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7138) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-24 02:08:15,149 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 [2024-11-24 02:08:15,213 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 [2024-11-24 02:08:15,254 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 [2024-11-24 02:08:15,317 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 [2024-11-24 02:08:15,361 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 [2024-11-24 02:08:16,565 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 [2024-11-24 02:08:16,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1769448851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:08:16,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 02:08:16,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2024-11-24 02:08:16,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724977147] [2024-11-24 02:08:16,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 02:08:16,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-24 02:08:16,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 02:08:16,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-24 02:08:16,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=474, Unknown=14, NotChecked=798, Total=1406 [2024-11-24 02:08:16,577 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) [2024-11-24 02:08:59,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:08:59,644 INFO L93 Difference]: Finished difference Result 1615 states and 1738 transitions. [2024-11-24 02:08:59,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 02:08:59,645 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 [2024-11-24 02:08:59,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:08:59,647 INFO L225 Difference]: With dead ends: 1615 [2024-11-24 02:08:59,647 INFO L226 Difference]: Without dead ends: 1615 [2024-11-24 02:08:59,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=141, Invalid=603, Unknown=14, NotChecked=882, Total=1640 [2024-11-24 02:08:59,648 INFO L435 NwaCegarLoop]: 680 mSDtfsCounter, 720 mSDsluCounter, 4402 mSDsCounter, 0 mSdLazyCounter, 4031 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 5082 SdHoareTripleChecker+Invalid, 4044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:08:59,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 5082 Invalid, 4044 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 4031 Invalid, 0 Unknown, 0 Unchecked, 42.3s Time] [2024-11-24 02:08:59,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2024-11-24 02:08:59,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1241. [2024-11-24 02:08:59,658 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) [2024-11-24 02:08:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1337 transitions. [2024-11-24 02:08:59,659 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1337 transitions. Word has length 129 [2024-11-24 02:08:59,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:08:59,660 INFO L471 AbstractCegarLoop]: Abstraction has 1241 states and 1337 transitions. [2024-11-24 02:08:59,660 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) [2024-11-24 02:08:59,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1337 transitions. [2024-11-24 02:08:59,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 02:08:59,661 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:08:59,661 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] [2024-11-24 02:08:59,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-24 02:08:59,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2024-11-24 02:09:00,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 02:09:00,061 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)] === [2024-11-24 02:09:00,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:09:00,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1654770106, now seen corresponding path program 1 times [2024-11-24 02:09:00,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 02:09:00,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823808843] [2024-11-24 02:09:00,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:09:00,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:09:00,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:09:00,064 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:09:00,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-24 02:09:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:09:00,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-24 02:09:00,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:09:02,026 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 02:09:02,026 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 [2024-11-24 02:09:02,062 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 [2024-11-24 02:09:02,190 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 [2024-11-24 02:09:02,247 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 [2024-11-24 02:09:02,802 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 [2024-11-24 02:09:02,822 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 [2024-11-24 02:09:06,886 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:09:06,886 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 [2024-11-24 02:09:06,908 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 [2024-11-24 02:09:07,548 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:09:07,549 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 [2024-11-24 02:09:07,613 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 [2024-11-24 02:09:08,145 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:09:08,145 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 [2024-11-24 02:09:08,209 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 [2024-11-24 02:09:08,769 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 02:09:08,769 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 [2024-11-24 02:09:08,832 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 [2024-11-24 02:09:08,940 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 [2024-11-24 02:09:08,981 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 [2024-11-24 02:09:09,179 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 02:09:09,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:09:09,780 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 [2024-11-24 02:09:09,861 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 [2024-11-24 02:09:09,996 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 [2024-11-24 02:09:10,079 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 [2024-11-24 02:09:10,271 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 [2024-11-24 02:09:10,444 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 [2024-11-24 02:09:18,266 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 [2024-11-24 02:09:18,308 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 02:09:18,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823808843] [2024-11-24 02:09:18,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823808843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:09:18,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [329723355] [2024-11-24 02:09:18,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:09:18,309 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 02:09:18,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 02:09:18,311 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 02:09:18,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81a7008-228e-4334-b706-9da0dfc9a337/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process