./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:18:11,960 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:18:12,023 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-27 23:18:12,028 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:18:12,028 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:18:12,053 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:18:12,054 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:18:12,054 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:18:12,054 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:18:12,054 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:18:12,055 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:18:12,055 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:18:12,055 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:18:12,055 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:18:12,055 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:18:12,056 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:18:12,056 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:18:12,056 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:18:12,056 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:18:12,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:18:12,056 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 23:18:12,056 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 23:18:12,056 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 23:18:12,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:18:12,057 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:18:12,057 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:18:12,057 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:18:12,057 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:18:12,057 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:18:12,057 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:18:12,057 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:18:12,057 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:18:12,057 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:18:12,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:18:12,058 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:18:12,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:18:12,058 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:18:12,058 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:18:12,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:18:12,058 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:18:12,058 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:18:12,058 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:18:12,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:18:12,059 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:18:12,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:18:12,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:18:12,060 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:18:12,060 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_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 [2024-11-27 23:18:12,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:18:12,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:18:12,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:18:12,361 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:18:12,362 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:18:12,363 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2024-11-27 23:18:15,350 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/data/b04452e8b/5f959eaf806a44dc98febd9bf4ac8e2e/FLAG1aa21af8e [2024-11-27 23:18:15,903 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:18:15,907 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2024-11-27 23:18:15,935 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/data/b04452e8b/5f959eaf806a44dc98febd9bf4ac8e2e/FLAG1aa21af8e [2024-11-27 23:18:16,409 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/data/b04452e8b/5f959eaf806a44dc98febd9bf4ac8e2e [2024-11-27 23:18:16,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:18:16,414 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:18:16,415 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:18:16,416 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:18:16,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:18:16,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:18:16" (1/1) ... [2024-11-27 23:18:16,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d249ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:16, skipping insertion in model container [2024-11-27 23:18:16,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:18:16" (1/1) ... [2024-11-27 23:18:16,475 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:18:17,038 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,074 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,079 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,084 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,094 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,153 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,156 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,158 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,164 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,192 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,193 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,196 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,196 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,218 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,218 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,222 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,226 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,262 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,262 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,268 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,268 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,292 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,292 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,296 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,296 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,298 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,304 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,310 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,312 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,312 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,326 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,328 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,332 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,334 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,338 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:17,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:18:17,369 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-11-27 23:18:17,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3037e1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:17, skipping insertion in model container [2024-11-27 23:18:17,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:18:17,371 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-27 23:18:17,373 INFO L158 Benchmark]: Toolchain (without parser) took 958.42ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 60.3MB in the end (delta: 30.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-27 23:18:17,374 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 167.8MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:18:17,374 INFO L158 Benchmark]: CACSL2BoogieTranslator took 955.58ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 60.3MB in the end (delta: 30.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-27 23:18:17,376 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 167.8MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 955.58ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 60.3MB in the end (delta: 30.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 760]: 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_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:18:20,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:18:20,318 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-27 23:18:20,330 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:18:20,330 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:18:20,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:18:20,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:18:20,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:18:20,374 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:18:20,374 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:18:20,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:18:20,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:18:20,376 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:18:20,376 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:18:20,376 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:18:20,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:18:20,376 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:18:20,376 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:18:20,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:18:20,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:18:20,376 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 23:18:20,377 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 23:18:20,377 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 23:18:20,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:18:20,377 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:18:20,377 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-27 23:18:20,377 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-27 23:18:20,377 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:18:20,377 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:18:20,377 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:18:20,377 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:18:20,377 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:18:20,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:18:20,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:18:20,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:18:20,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:18:20,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:18:20,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:18:20,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:18:20,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:18:20,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:18:20,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:18:20,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:18:20,378 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-27 23:18:20,378 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-27 23:18:20,380 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:18:20,381 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:18:20,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:18:20,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:18:20,381 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_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 [2024-11-27 23:18:20,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:18:20,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:18:20,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:18:20,760 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:18:20,760 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:18:20,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2024-11-27 23:18:23,747 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/data/f39f46634/3136ff59650148bd9f3a812a0de2a2b8/FLAG00c4d97ef [2024-11-27 23:18:24,233 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:18:24,234 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2024-11-27 23:18:24,269 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/data/f39f46634/3136ff59650148bd9f3a812a0de2a2b8/FLAG00c4d97ef [2024-11-27 23:18:24,294 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/data/f39f46634/3136ff59650148bd9f3a812a0de2a2b8 [2024-11-27 23:18:24,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:18:24,301 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:18:24,304 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:18:24,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:18:24,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:18:24,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:18:24" (1/1) ... [2024-11-27 23:18:24,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@238d2b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:24, skipping insertion in model container [2024-11-27 23:18:24,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:18:24" (1/1) ... [2024-11-27 23:18:24,383 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:18:25,022 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,082 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,090 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,099 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,107 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,149 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,152 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,155 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,162 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,195 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,195 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,198 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,199 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,222 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,222 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,225 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,226 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,245 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,245 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,248 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,249 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,267 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,267 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,270 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,271 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,272 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,276 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,277 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,283 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,284 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,293 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,294 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,295 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,295 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,300 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:18:25,331 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-27 23:18:25,356 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:18:25,417 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,449 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,455 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,458 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,464 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,512 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,518 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,523 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,528 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,548 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,548 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,551 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,551 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,564 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,564 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,567 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,567 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,603 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,604 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,611 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,611 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,627 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,627 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,629 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,629 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,630 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,632 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,633 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,634 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,634 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,637 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,638 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,639 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,639 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,642 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:18:25,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:18:25,651 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:18:25,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:18:25,817 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:18:25,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:25 WrapperNode [2024-11-27 23:18:25,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:18:25,819 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:18:25,819 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:18:25,819 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:18:25,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:25" (1/1) ... [2024-11-27 23:18:25,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:25" (1/1) ... [2024-11-27 23:18:25,977 INFO L138 Inliner]: procedures = 180, calls = 606, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2496 [2024-11-27 23:18:25,978 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:18:25,979 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:18:25,979 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:18:25,979 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:18:25,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:25" (1/1) ... [2024-11-27 23:18:25,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:25" (1/1) ... [2024-11-27 23:18:26,037 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:25" (1/1) ... [2024-11-27 23:18:26,278 INFO L175 MemorySlicer]: Split 574 memory accesses to 3 slices as follows [2, 466, 106]. 81 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 102 writes are split as follows [0, 98, 4]. [2024-11-27 23:18:26,279 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:25" (1/1) ... [2024-11-27 23:18:26,279 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:25" (1/1) ... [2024-11-27 23:18:26,419 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:25" (1/1) ... [2024-11-27 23:18:26,425 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:25" (1/1) ... [2024-11-27 23:18:26,461 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:25" (1/1) ... [2024-11-27 23:18:26,479 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:25" (1/1) ... [2024-11-27 23:18:26,492 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:25" (1/1) ... [2024-11-27 23:18:26,512 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:18:26,513 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:18:26,513 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:18:26,514 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:18:26,515 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:25" (1/1) ... [2024-11-27 23:18:26,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:18:26,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:26,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:18:26,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:18:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-27 23:18:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-27 23:18:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-27 23:18:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-27 23:18:26,595 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-27 23:18:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-27 23:18:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-27 23:18:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-27 23:18:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 23:18:26,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 23:18:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-27 23:18:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-27 23:18:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-27 23:18:26,596 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-27 23:18:26,596 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-27 23:18:26,596 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-27 23:18:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 23:18:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:18:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 23:18:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 23:18:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 23:18:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 23:18:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 23:18:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 23:18:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 23:18:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 23:18:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-27 23:18:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-27 23:18:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-27 23:18:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-27 23:18:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-27 23:18:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-27 23:18:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:18:26,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:18:26,983 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:18:26,986 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:18:27,055 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-27 23:18:27,091 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-27 23:18:27,121 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-27 23:18:38,410 INFO L? ?]: Removed 2433 outVars from TransFormulas that were not future-live. [2024-11-27 23:18:38,411 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:18:38,501 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:18:38,501 INFO L312 CfgBuilder]: Removed 94 assume(true) statements. [2024-11-27 23:18:38,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:18:38 BoogieIcfgContainer [2024-11-27 23:18:38,502 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:18:38,507 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:18:38,507 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:18:38,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:18:38,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:18:24" (1/3) ... [2024-11-27 23:18:38,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84f61b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:18:38, skipping insertion in model container [2024-11-27 23:18:38,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:25" (2/3) ... [2024-11-27 23:18:38,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84f61b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:18:38, skipping insertion in model container [2024-11-27 23:18:38,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:18:38" (3/3) ... [2024-11-27 23:18:38,517 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-3.i [2024-11-27 23:18:38,533 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:18:38,534 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test10-3.i that has 6 procedures, 2468 locations, 1 initial locations, 93 loop locations, and 1189 error locations. [2024-11-27 23:18:38,627 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:18:38,644 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;@42cc8c54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:18:38,645 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1189 error locations. [2024-11-27 23:18:38,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 2458 states, 1257 states have (on average 2.199681782020684) internal successors, (2765), 2444 states have internal predecessors, (2765), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-27 23:18:38,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-27 23:18:38,668 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:38,669 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-27 23:18:38,669 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:18:38,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:38,675 INFO L85 PathProgramCache]: Analyzing trace with hash 84472, now seen corresponding path program 1 times [2024-11-27 23:18:38,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:18:38,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117694059] [2024-11-27 23:18:38,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:38,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:38,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:38,697 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:38,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:18:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:38,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:18:39,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:39,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-27 23:18:39,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:18:39,099 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:18:39,102 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:18:39,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117694059] [2024-11-27 23:18:39,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117694059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:39,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:39,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:18:39,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895337896] [2024-11-27 23:18:39,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:39,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:18:39,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:18:39,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:18:39,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:18:39,152 INFO L87 Difference]: Start difference. First operand has 2458 states, 1257 states have (on average 2.199681782020684) internal successors, (2765), 2444 states have internal predecessors, (2765), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:44,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:44,854 INFO L93 Difference]: Finished difference Result 3294 states and 3494 transitions. [2024-11-27 23:18:44,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:18:44,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-27 23:18:44,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:44,889 INFO L225 Difference]: With dead ends: 3294 [2024-11-27 23:18:44,889 INFO L226 Difference]: Without dead ends: 3292 [2024-11-27 23:18:44,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:18:44,894 INFO L435 NwaCegarLoop]: 1677 mSDtfsCounter, 2322 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2332 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:44,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2332 Valid, 2248 Invalid, 1690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-27 23:18:44,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2024-11-27 23:18:45,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 2602. [2024-11-27 23:18:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 1429 states have (on average 2.0370888733379986) internal successors, (2911), 2586 states have internal predecessors, (2911), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-27 23:18:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 2943 transitions. [2024-11-27 23:18:45,083 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 2943 transitions. Word has length 3 [2024-11-27 23:18:45,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:45,083 INFO L471 AbstractCegarLoop]: Abstraction has 2602 states and 2943 transitions. [2024-11-27 23:18:45,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:45,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 2943 transitions. [2024-11-27 23:18:45,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-27 23:18:45,086 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:45,087 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-27 23:18:45,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:18:45,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:45,291 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:18:45,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:45,292 INFO L85 PathProgramCache]: Analyzing trace with hash 84473, now seen corresponding path program 1 times [2024-11-27 23:18:45,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:18:45,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141619088] [2024-11-27 23:18:45,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:45,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:45,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:45,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:45,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:18:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:45,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:18:45,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:45,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:18:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:18:45,545 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:18:45,545 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:18:45,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141619088] [2024-11-27 23:18:45,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141619088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:45,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:45,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:18:45,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082847179] [2024-11-27 23:18:45,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:45,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:18:45,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:18:45,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:18:45,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:18:45,550 INFO L87 Difference]: Start difference. First operand 2602 states and 2943 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:52,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:52,276 INFO L93 Difference]: Finished difference Result 3404 states and 3825 transitions. [2024-11-27 23:18:52,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:18:52,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-27 23:18:52,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:52,291 INFO L225 Difference]: With dead ends: 3404 [2024-11-27 23:18:52,291 INFO L226 Difference]: Without dead ends: 3404 [2024-11-27 23:18:52,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:18:52,292 INFO L435 NwaCegarLoop]: 2228 mSDtfsCounter, 876 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 3633 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:52,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 3633 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-27 23:18:52,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2024-11-27 23:18:52,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 3075. [2024-11-27 23:18:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3075 states, 1900 states have (on average 1.9926315789473685) internal successors, (3786), 3056 states have internal predecessors, (3786), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-27 23:18:52,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3075 states to 3075 states and 3824 transitions. [2024-11-27 23:18:52,374 INFO L78 Accepts]: Start accepts. Automaton has 3075 states and 3824 transitions. Word has length 3 [2024-11-27 23:18:52,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:52,375 INFO L471 AbstractCegarLoop]: Abstraction has 3075 states and 3824 transitions. [2024-11-27 23:18:52,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:52,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 3824 transitions. [2024-11-27 23:18:52,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-27 23:18:52,376 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:52,376 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:52,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:18:52,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:52,580 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:18:52,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:52,581 INFO L85 PathProgramCache]: Analyzing trace with hash 327660049, now seen corresponding path program 1 times [2024-11-27 23:18:52,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:18:52,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798397763] [2024-11-27 23:18:52,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:52,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:52,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:52,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:52,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:18:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:52,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:18:52,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:52,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:18:52,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:18:52,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-27 23:18:52,996 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:18:52,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:18:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:18:53,023 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:18:53,023 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:18:53,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798397763] [2024-11-27 23:18:53,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798397763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:53,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:53,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:18:53,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254782592] [2024-11-27 23:18:53,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:53,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:18:53,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:18:53,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:18:53,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:18:53,026 INFO L87 Difference]: Start difference. First operand 3075 states and 3824 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:05,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:05,807 INFO L93 Difference]: Finished difference Result 5341 states and 6240 transitions. [2024-11-27 23:19:05,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:19:05,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-11-27 23:19:05,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:05,824 INFO L225 Difference]: With dead ends: 5341 [2024-11-27 23:19:05,824 INFO L226 Difference]: Without dead ends: 5341 [2024-11-27 23:19:05,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:19:05,825 INFO L435 NwaCegarLoop]: 1183 mSDtfsCounter, 2384 mSDsluCounter, 2219 mSDsCounter, 0 mSdLazyCounter, 4325 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2393 SdHoareTripleChecker+Valid, 3402 SdHoareTripleChecker+Invalid, 4351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 4325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:05,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2393 Valid, 3402 Invalid, 4351 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 4325 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2024-11-27 23:19:05,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2024-11-27 23:19:05,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 3796. [2024-11-27 23:19:05,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3796 states, 2621 states have (on average 2.0194582220526516) internal successors, (5293), 3771 states have internal predecessors, (5293), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-27 23:19:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3796 states to 3796 states and 5343 transitions. [2024-11-27 23:19:05,917 INFO L78 Accepts]: Start accepts. Automaton has 3796 states and 5343 transitions. Word has length 8 [2024-11-27 23:19:05,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:05,917 INFO L471 AbstractCegarLoop]: Abstraction has 3796 states and 5343 transitions. [2024-11-27 23:19:05,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:05,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3796 states and 5343 transitions. [2024-11-27 23:19:05,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 23:19:05,918 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:05,918 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:19:05,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:19:06,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:06,119 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:19:06,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:06,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1567526949, now seen corresponding path program 1 times [2024-11-27 23:19:06,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:19:06,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557692671] [2024-11-27 23:19:06,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:06,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:06,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:06,125 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:06,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:19:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:06,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:19:06,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:06,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-27 23:19:06,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:19:06,388 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:19:06,388 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:19:06,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557692671] [2024-11-27 23:19:06,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557692671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:19:06,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:19:06,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:19:06,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391986172] [2024-11-27 23:19:06,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:19:06,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:19:06,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:19:06,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:19:06,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:19:06,390 INFO L87 Difference]: Start difference. First operand 3796 states and 5343 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2024-11-27 23:19:10,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:10,888 INFO L93 Difference]: Finished difference Result 4509 states and 6014 transitions. [2024-11-27 23:19:10,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:19:10,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 [2024-11-27 23:19:10,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:10,898 INFO L225 Difference]: With dead ends: 4509 [2024-11-27 23:19:10,898 INFO L226 Difference]: Without dead ends: 4509 [2024-11-27 23:19:10,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:19:10,899 INFO L435 NwaCegarLoop]: 2415 mSDtfsCounter, 1921 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 3184 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:10,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1931 Valid, 3184 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-27 23:19:10,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2024-11-27 23:19:10,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 3704. [2024-11-27 23:19:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 2621 states have (on average 1.937428462418924) internal successors, (5078), 3679 states have internal predecessors, (5078), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-27 23:19:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 5128 transitions. [2024-11-27 23:19:10,990 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 5128 transitions. Word has length 9 [2024-11-27 23:19:10,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:10,991 INFO L471 AbstractCegarLoop]: Abstraction has 3704 states and 5128 transitions. [2024-11-27 23:19:10,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2024-11-27 23:19:10,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 5128 transitions. [2024-11-27 23:19:10,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 23:19:10,992 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:10,992 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:19:11,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 23:19:11,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:11,192 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:19:11,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:11,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1567526950, now seen corresponding path program 1 times [2024-11-27 23:19:11,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:19:11,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280817045] [2024-11-27 23:19:11,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:11,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:11,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:11,198 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:11,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:19:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:11,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:19:11,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:11,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:19:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:19:11,473 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:19:11,473 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:19:11,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280817045] [2024-11-27 23:19:11,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280817045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:19:11,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:19:11,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:19:11,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101912820] [2024-11-27 23:19:11,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:19:11,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:19:11,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:19:11,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:19:11,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:19:11,475 INFO L87 Difference]: Start difference. First operand 3704 states and 5128 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2024-11-27 23:19:18,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:18,033 INFO L93 Difference]: Finished difference Result 5511 states and 7590 transitions. [2024-11-27 23:19:18,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:19:18,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 [2024-11-27 23:19:18,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:18,043 INFO L225 Difference]: With dead ends: 5511 [2024-11-27 23:19:18,044 INFO L226 Difference]: Without dead ends: 5511 [2024-11-27 23:19:18,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:19:18,044 INFO L435 NwaCegarLoop]: 2772 mSDtfsCounter, 1424 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 3976 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:18,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 3976 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-27 23:19:18,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5511 states. [2024-11-27 23:19:18,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5511 to 4048. [2024-11-27 23:19:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 2975 states have (on average 1.922016806722689) internal successors, (5718), 4023 states have internal predecessors, (5718), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-27 23:19:18,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 5768 transitions. [2024-11-27 23:19:18,125 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 5768 transitions. Word has length 9 [2024-11-27 23:19:18,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:18,126 INFO L471 AbstractCegarLoop]: Abstraction has 4048 states and 5768 transitions. [2024-11-27 23:19:18,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2024-11-27 23:19:18,126 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 5768 transitions. [2024-11-27 23:19:18,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 23:19:18,126 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:18,126 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:19:18,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 23:19:18,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:18,328 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr638REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:19:18,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:18,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2037202196, now seen corresponding path program 1 times [2024-11-27 23:19:18,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:19:18,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863476337] [2024-11-27 23:19:18,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:18,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:18,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:18,332 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:18,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:19:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:18,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:19:18,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:18,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:19:18,612 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:19:18,612 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:19:18,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863476337] [2024-11-27 23:19:18,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863476337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:19:18,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:19:18,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:19:18,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929776703] [2024-11-27 23:19:18,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:19:18,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:19:18,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:19:18,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:19:18,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:19:18,615 INFO L87 Difference]: Start difference. First operand 4048 states and 5768 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:24,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:24,897 INFO L93 Difference]: Finished difference Result 4686 states and 6264 transitions. [2024-11-27 23:19:24,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:19:24,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-27 23:19:24,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:24,910 INFO L225 Difference]: With dead ends: 4686 [2024-11-27 23:19:24,910 INFO L226 Difference]: Without dead ends: 4686 [2024-11-27 23:19:24,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:19:24,911 INFO L435 NwaCegarLoop]: 1626 mSDtfsCounter, 2285 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2295 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:24,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2295 Valid, 3578 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-27 23:19:24,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4686 states. [2024-11-27 23:19:24,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4686 to 4025. [2024-11-27 23:19:24,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4025 states, 2975 states have (on average 1.9065546218487395) internal successors, (5672), 4000 states have internal predecessors, (5672), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-27 23:19:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4025 states to 4025 states and 5722 transitions. [2024-11-27 23:19:24,978 INFO L78 Accepts]: Start accepts. Automaton has 4025 states and 5722 transitions. Word has length 11 [2024-11-27 23:19:24,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:24,978 INFO L471 AbstractCegarLoop]: Abstraction has 4025 states and 5722 transitions. [2024-11-27 23:19:24,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:24,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4025 states and 5722 transitions. [2024-11-27 23:19:24,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 23:19:24,979 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:24,979 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:19:24,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 23:19:25,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:25,180 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr639REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:19:25,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:25,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2037202195, now seen corresponding path program 1 times [2024-11-27 23:19:25,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:19:25,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1947910861] [2024-11-27 23:19:25,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:25,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:25,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:25,183 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:25,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:19:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:25,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:19:25,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:25,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:19:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:19:25,528 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:19:25,528 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:19:25,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947910861] [2024-11-27 23:19:25,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947910861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:19:25,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:19:25,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:19:25,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955042125] [2024-11-27 23:19:25,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:19:25,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:19:25,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:19:25,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:19:25,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:19:25,530 INFO L87 Difference]: Start difference. First operand 4025 states and 5722 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:33,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:33,223 INFO L93 Difference]: Finished difference Result 4775 states and 6544 transitions. [2024-11-27 23:19:33,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:19:33,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-27 23:19:33,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:33,245 INFO L225 Difference]: With dead ends: 4775 [2024-11-27 23:19:33,245 INFO L226 Difference]: Without dead ends: 4775 [2024-11-27 23:19:33,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:19:33,246 INFO L435 NwaCegarLoop]: 2133 mSDtfsCounter, 857 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 2644 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 4710 SdHoareTripleChecker+Invalid, 2659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:33,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 4710 Invalid, 2659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2644 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-27 23:19:33,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2024-11-27 23:19:33,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4074. [2024-11-27 23:19:33,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4074 states, 3024 states have (on average 1.8961640211640212) internal successors, (5734), 4049 states have internal predecessors, (5734), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-27 23:19:33,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 5784 transitions. [2024-11-27 23:19:33,341 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 5784 transitions. Word has length 11 [2024-11-27 23:19:33,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:33,341 INFO L471 AbstractCegarLoop]: Abstraction has 4074 states and 5784 transitions. [2024-11-27 23:19:33,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:33,341 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 5784 transitions. [2024-11-27 23:19:33,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-27 23:19:33,342 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:33,342 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:19:33,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 23:19:33,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:33,543 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr663REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:19:33,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:33,544 INFO L85 PathProgramCache]: Analyzing trace with hash 753951524, now seen corresponding path program 1 times [2024-11-27 23:19:33,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:19:33,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332102636] [2024-11-27 23:19:33,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:33,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:33,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:33,546 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:33,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:19:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:33,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:19:33,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:33,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:19:33,790 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:19:33,790 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:19:33,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332102636] [2024-11-27 23:19:33,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332102636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:19:33,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:19:33,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:19:33,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228548991] [2024-11-27 23:19:33,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:19:33,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:19:33,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:19:33,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:19:33,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:19:33,792 INFO L87 Difference]: Start difference. First operand 4074 states and 5784 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:33,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:33,934 INFO L93 Difference]: Finished difference Result 3996 states and 5663 transitions. [2024-11-27 23:19:33,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:19:33,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2024-11-27 23:19:33,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:33,947 INFO L225 Difference]: With dead ends: 3996 [2024-11-27 23:19:33,947 INFO L226 Difference]: Without dead ends: 3996 [2024-11-27 23:19:33,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:19:33,948 INFO L435 NwaCegarLoop]: 2371 mSDtfsCounter, 45 mSDsluCounter, 4719 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 7090 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 [2024-11-27 23:19:33,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 7090 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:19:33,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3996 states. [2024-11-27 23:19:33,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3996 to 3990. [2024-11-27 23:19:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3990 states, 2959 states have (on average 1.8948969246367016) internal successors, (5607), 3965 states have internal predecessors, (5607), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-27 23:19:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3990 states to 3990 states and 5657 transitions. [2024-11-27 23:19:34,013 INFO L78 Accepts]: Start accepts. Automaton has 3990 states and 5657 transitions. Word has length 13 [2024-11-27 23:19:34,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:34,013 INFO L471 AbstractCegarLoop]: Abstraction has 3990 states and 5657 transitions. [2024-11-27 23:19:34,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:34,015 INFO L276 IsEmpty]: Start isEmpty. Operand 3990 states and 5657 transitions. [2024-11-27 23:19:34,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-27 23:19:34,016 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:34,016 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] [2024-11-27 23:19:34,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-27 23:19:34,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:34,217 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr324REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:19:34,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:34,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1773122699, now seen corresponding path program 1 times [2024-11-27 23:19:34,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:19:34,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290096491] [2024-11-27 23:19:34,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:34,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:34,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:34,220 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:34,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:19:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:34,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:19:34,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:34,487 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 [2024-11-27 23:19:34,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:19:34,561 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:19:34,561 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:19:34,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290096491] [2024-11-27 23:19:34,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290096491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:19:34,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:19:34,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:19:34,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116083892] [2024-11-27 23:19:34,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:19:34,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:19:34,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:19:34,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:19:34,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:19:34,563 INFO L87 Difference]: Start difference. First operand 3990 states and 5657 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:41,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:41,013 INFO L93 Difference]: Finished difference Result 4688 states and 6308 transitions. [2024-11-27 23:19:41,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:19:41,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-27 23:19:41,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:41,024 INFO L225 Difference]: With dead ends: 4688 [2024-11-27 23:19:41,024 INFO L226 Difference]: Without dead ends: 4688 [2024-11-27 23:19:41,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:19:41,025 INFO L435 NwaCegarLoop]: 2265 mSDtfsCounter, 1884 mSDsluCounter, 2413 mSDsCounter, 0 mSdLazyCounter, 2920 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 4678 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:41,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 4678 Invalid, 2951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2920 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-27 23:19:41,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4688 states. [2024-11-27 23:19:41,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4688 to 3967. [2024-11-27 23:19:41,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3967 states, 2959 states have (on average 1.8482595471443055) internal successors, (5469), 3942 states have internal predecessors, (5469), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-27 23:19:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3967 states to 3967 states and 5519 transitions. [2024-11-27 23:19:41,105 INFO L78 Accepts]: Start accepts. Automaton has 3967 states and 5519 transitions. Word has length 21 [2024-11-27 23:19:41,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:41,105 INFO L471 AbstractCegarLoop]: Abstraction has 3967 states and 5519 transitions. [2024-11-27 23:19:41,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:41,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3967 states and 5519 transitions. [2024-11-27 23:19:41,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-27 23:19:41,107 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:41,107 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] [2024-11-27 23:19:41,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 23:19:41,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:41,308 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr325REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:19:41,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:41,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1773122698, now seen corresponding path program 1 times [2024-11-27 23:19:41,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:19:41,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363134783] [2024-11-27 23:19:41,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:41,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:41,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:41,312 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:41,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:19:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:41,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:19:41,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:41,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:19:41,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:19:41,738 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:19:41,738 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:19:41,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363134783] [2024-11-27 23:19:41,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363134783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:19:41,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:19:41,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:19:41,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381808805] [2024-11-27 23:19:41,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:19:41,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:19:41,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:19:41,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:19:41,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:19:41,739 INFO L87 Difference]: Start difference. First operand 3967 states and 5519 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:50,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:50,695 INFO L93 Difference]: Finished difference Result 5445 states and 7345 transitions. [2024-11-27 23:19:50,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:19:50,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-27 23:19:50,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:50,707 INFO L225 Difference]: With dead ends: 5445 [2024-11-27 23:19:50,707 INFO L226 Difference]: Without dead ends: 5445 [2024-11-27 23:19:50,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:19:50,708 INFO L435 NwaCegarLoop]: 2615 mSDtfsCounter, 1461 mSDsluCounter, 2885 mSDsCounter, 0 mSdLazyCounter, 3040 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 5500 SdHoareTripleChecker+Invalid, 3062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:50,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 5500 Invalid, 3062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3040 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-11-27 23:19:50,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5445 states. [2024-11-27 23:19:50,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5445 to 4083. [2024-11-27 23:19:50,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4083 states, 3075 states have (on average 1.8240650406504064) internal successors, (5609), 4058 states have internal predecessors, (5609), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-27 23:19:50,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4083 states to 4083 states and 5659 transitions. [2024-11-27 23:19:50,763 INFO L78 Accepts]: Start accepts. Automaton has 4083 states and 5659 transitions. Word has length 21 [2024-11-27 23:19:50,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:50,764 INFO L471 AbstractCegarLoop]: Abstraction has 4083 states and 5659 transitions. [2024-11-27 23:19:50,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:50,764 INFO L276 IsEmpty]: Start isEmpty. Operand 4083 states and 5659 transitions. [2024-11-27 23:19:50,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-27 23:19:50,765 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:50,765 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] [2024-11-27 23:19:50,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 23:19:50,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:50,969 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:19:50,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:50,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2007176747, now seen corresponding path program 1 times [2024-11-27 23:19:50,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:19:50,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210674225] [2024-11-27 23:19:50,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:50,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:50,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:50,974 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:50,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:19:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:51,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:19:51,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:51,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-27 23:19:51,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:19:51,342 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:19:51,342 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:19:51,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210674225] [2024-11-27 23:19:51,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210674225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:19:51,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:19:51,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:19:51,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259008407] [2024-11-27 23:19:51,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:19:51,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:19:51,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:19:51,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:19:51,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:19:51,344 INFO L87 Difference]: Start difference. First operand 4083 states and 5659 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:57,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:57,587 INFO L93 Difference]: Finished difference Result 4765 states and 6386 transitions. [2024-11-27 23:19:57,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:19:57,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-27 23:19:57,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:57,592 INFO L225 Difference]: With dead ends: 4765 [2024-11-27 23:19:57,592 INFO L226 Difference]: Without dead ends: 4765 [2024-11-27 23:19:57,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:19:57,593 INFO L435 NwaCegarLoop]: 2265 mSDtfsCounter, 1861 mSDsluCounter, 2413 mSDsCounter, 0 mSdLazyCounter, 2874 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1871 SdHoareTripleChecker+Valid, 4678 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:57,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1871 Valid, 4678 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2874 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-27 23:19:57,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4765 states. [2024-11-27 23:19:57,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4765 to 4060. [2024-11-27 23:19:57,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4060 states, 3075 states have (on average 1.8091056910569105) internal successors, (5563), 4035 states have internal predecessors, (5563), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-27 23:19:57,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4060 states to 4060 states and 5613 transitions. [2024-11-27 23:19:57,633 INFO L78 Accepts]: Start accepts. Automaton has 4060 states and 5613 transitions. Word has length 21 [2024-11-27 23:19:57,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:57,633 INFO L471 AbstractCegarLoop]: Abstraction has 4060 states and 5613 transitions. [2024-11-27 23:19:57,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:57,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4060 states and 5613 transitions. [2024-11-27 23:19:57,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-27 23:19:57,634 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:57,634 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] [2024-11-27 23:19:57,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 23:19:57,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:57,835 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:19:57,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:57,835 INFO L85 PathProgramCache]: Analyzing trace with hash -2007176746, now seen corresponding path program 1 times [2024-11-27 23:19:57,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:19:57,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328634279] [2024-11-27 23:19:57,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:57,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:57,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:57,839 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:57,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 23:19:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:58,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:19:58,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:58,103 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 5 [2024-11-27 23:19:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:19:58,257 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:19:58,257 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:19:58,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328634279] [2024-11-27 23:19:58,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328634279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:19:58,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:19:58,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:19:58,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256456007] [2024-11-27 23:19:58,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:19:58,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:19:58,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:19:58,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:19:58,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:19:58,259 INFO L87 Difference]: Start difference. First operand 4060 states and 5613 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:20:06,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:06,814 INFO L93 Difference]: Finished difference Result 5538 states and 7439 transitions. [2024-11-27 23:20:06,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:20:06,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-27 23:20:06,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:06,821 INFO L225 Difference]: With dead ends: 5538 [2024-11-27 23:20:06,821 INFO L226 Difference]: Without dead ends: 5538 [2024-11-27 23:20:06,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:20:06,822 INFO L435 NwaCegarLoop]: 2597 mSDtfsCounter, 1438 mSDsluCounter, 2862 mSDsCounter, 0 mSdLazyCounter, 3044 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 5459 SdHoareTripleChecker+Invalid, 3066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:06,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 5459 Invalid, 3066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3044 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2024-11-27 23:20:06,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5538 states. [2024-11-27 23:20:06,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5538 to 4176. [2024-11-27 23:20:06,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4176 states, 3191 states have (on average 1.7872140394860545) internal successors, (5703), 4151 states have internal predecessors, (5703), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-27 23:20:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 5753 transitions. [2024-11-27 23:20:06,905 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 5753 transitions. Word has length 21 [2024-11-27 23:20:06,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:06,906 INFO L471 AbstractCegarLoop]: Abstraction has 4176 states and 5753 transitions. [2024-11-27 23:20:06,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:20:06,906 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 5753 transitions. [2024-11-27 23:20:06,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-27 23:20:06,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:06,907 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, 1] [2024-11-27 23:20:06,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 23:20:07,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:07,108 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr325REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:20:07,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:07,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1475899896, now seen corresponding path program 1 times [2024-11-27 23:20:07,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:20:07,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679286588] [2024-11-27 23:20:07,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:07,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:07,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:07,112 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:07,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 23:20:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:07,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:20:07,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:07,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:20:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:07,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:08,392 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:20:08,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679286588] [2024-11-27 23:20:08,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679286588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:08,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:20:08,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-27 23:20:08,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043815922] [2024-11-27 23:20:08,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:08,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:20:08,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:20:08,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:20:08,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:20:08,394 INFO L87 Difference]: Start difference. First operand 4176 states and 5753 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:20:30,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:30,563 INFO L93 Difference]: Finished difference Result 5952 states and 8015 transitions. [2024-11-27 23:20:30,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:20:30,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 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 40 [2024-11-27 23:20:30,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:30,571 INFO L225 Difference]: With dead ends: 5952 [2024-11-27 23:20:30,571 INFO L226 Difference]: Without dead ends: 5952 [2024-11-27 23:20:30,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:20:30,572 INFO L435 NwaCegarLoop]: 2599 mSDtfsCounter, 3684 mSDsluCounter, 6362 mSDsCounter, 0 mSdLazyCounter, 6045 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3690 SdHoareTripleChecker+Valid, 8961 SdHoareTripleChecker+Invalid, 6078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 6045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:30,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3690 Valid, 8961 Invalid, 6078 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 6045 Invalid, 0 Unknown, 0 Unchecked, 21.8s Time] [2024-11-27 23:20:30,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5952 states. [2024-11-27 23:20:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5952 to 4342. [2024-11-27 23:20:30,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4342 states, 3357 states have (on average 1.7685433422698837) internal successors, (5937), 4317 states have internal predecessors, (5937), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-27 23:20:30,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4342 states to 4342 states and 5987 transitions. [2024-11-27 23:20:30,634 INFO L78 Accepts]: Start accepts. Automaton has 4342 states and 5987 transitions. Word has length 40 [2024-11-27 23:20:30,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:30,634 INFO L471 AbstractCegarLoop]: Abstraction has 4342 states and 5987 transitions. [2024-11-27 23:20:30,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:20:30,635 INFO L276 IsEmpty]: Start isEmpty. Operand 4342 states and 5987 transitions. [2024-11-27 23:20:30,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-27 23:20:30,636 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:30,636 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, 1] [2024-11-27 23:20:30,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-27 23:20:30,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:30,838 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:20:30,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:30,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1855509769, now seen corresponding path program 1 times [2024-11-27 23:20:30,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:20:30,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731825852] [2024-11-27 23:20:30,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:30,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:30,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:30,842 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:30,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 23:20:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:31,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:20:31,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:31,195 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 [2024-11-27 23:20:31,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:31,544 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:32,273 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:20:32,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731825852] [2024-11-27 23:20:32,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731825852] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:32,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:20:32,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-27 23:20:32,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933003320] [2024-11-27 23:20:32,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:32,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:20:32,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:20:32,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:20:32,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:20:32,275 INFO L87 Difference]: Start difference. First operand 4342 states and 5987 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:00,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:00,789 INFO L93 Difference]: Finished difference Result 6118 states and 8249 transitions. [2024-11-27 23:21:00,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:21:00,791 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 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 40 [2024-11-27 23:21:00,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:00,798 INFO L225 Difference]: With dead ends: 6118 [2024-11-27 23:21:00,799 INFO L226 Difference]: Without dead ends: 6118 [2024-11-27 23:21:00,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:21:00,800 INFO L435 NwaCegarLoop]: 2597 mSDtfsCounter, 3594 mSDsluCounter, 8031 mSDsCounter, 0 mSdLazyCounter, 7450 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3600 SdHoareTripleChecker+Valid, 10628 SdHoareTripleChecker+Invalid, 7482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 7450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:00,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3600 Valid, 10628 Invalid, 7482 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 7450 Invalid, 0 Unknown, 0 Unchecked, 28.1s Time] [2024-11-27 23:21:00,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6118 states. [2024-11-27 23:21:00,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6118 to 4508. [2024-11-27 23:21:00,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4508 states, 3523 states have (on average 1.7516321317059325) internal successors, (6171), 4483 states have internal predecessors, (6171), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-27 23:21:00,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4508 states to 4508 states and 6221 transitions. [2024-11-27 23:21:00,878 INFO L78 Accepts]: Start accepts. Automaton has 4508 states and 6221 transitions. Word has length 40 [2024-11-27 23:21:00,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:00,879 INFO L471 AbstractCegarLoop]: Abstraction has 4508 states and 6221 transitions. [2024-11-27 23:21:00,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:00,879 INFO L276 IsEmpty]: Start isEmpty. Operand 4508 states and 6221 transitions. [2024-11-27 23:21:00,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-27 23:21:00,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:00,881 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] [2024-11-27 23:21:00,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-27 23:21:01,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:01,082 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr684REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:21:01,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:01,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1839620179, now seen corresponding path program 1 times [2024-11-27 23:21:01,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:21:01,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806725755] [2024-11-27 23:21:01,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:01,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:01,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:01,089 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:01,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 23:21:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:01,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:21:01,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:01,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:01,701 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:21:01,701 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:21:01,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806725755] [2024-11-27 23:21:01,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806725755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:01,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:01,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:21:01,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637729739] [2024-11-27 23:21:01,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:01,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:21:01,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:21:01,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:21:01,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:21:01,702 INFO L87 Difference]: Start difference. First operand 4508 states and 6221 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:02,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:02,214 INFO L93 Difference]: Finished difference Result 6726 states and 8966 transitions. [2024-11-27 23:21:02,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:21:02,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-11-27 23:21:02,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:02,221 INFO L225 Difference]: With dead ends: 6726 [2024-11-27 23:21:02,222 INFO L226 Difference]: Without dead ends: 6726 [2024-11-27 23:21:02,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:21:02,222 INFO L435 NwaCegarLoop]: 2415 mSDtfsCounter, 1626 mSDsluCounter, 2245 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 4660 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:02,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 4660 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:21:02,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6726 states. [2024-11-27 23:21:02,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6726 to 5903. [2024-11-27 23:21:02,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5903 states, 4911 states have (on average 1.7324373854612096) internal successors, (8508), 5868 states have internal predecessors, (8508), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-27 23:21:02,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5903 states to 5903 states and 8578 transitions. [2024-11-27 23:21:02,314 INFO L78 Accepts]: Start accepts. Automaton has 5903 states and 8578 transitions. Word has length 41 [2024-11-27 23:21:02,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:02,315 INFO L471 AbstractCegarLoop]: Abstraction has 5903 states and 8578 transitions. [2024-11-27 23:21:02,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:02,315 INFO L276 IsEmpty]: Start isEmpty. Operand 5903 states and 8578 transitions. [2024-11-27 23:21:02,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-27 23:21:02,316 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:02,316 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] [2024-11-27 23:21:02,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-27 23:21:02,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:02,520 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:21:02,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:02,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1877436811, now seen corresponding path program 1 times [2024-11-27 23:21:02,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:21:02,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1599587133] [2024-11-27 23:21:02,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:02,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:02,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:02,525 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:02,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 23:21:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:02,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:21:02,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:02,977 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:21:02,977 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:21:02,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599587133] [2024-11-27 23:21:02,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599587133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:02,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:02,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:21:02,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645552847] [2024-11-27 23:21:02,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:02,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:21:02,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:21:02,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:21:02,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:21:02,979 INFO L87 Difference]: Start difference. First operand 5903 states and 8578 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:03,145 INFO L93 Difference]: Finished difference Result 5885 states and 8544 transitions. [2024-11-27 23:21:03,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:21:03,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-27 23:21:03,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:03,155 INFO L225 Difference]: With dead ends: 5885 [2024-11-27 23:21:03,155 INFO L226 Difference]: Without dead ends: 5885 [2024-11-27 23:21:03,156 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 [2024-11-27 23:21:03,158 INFO L435 NwaCegarLoop]: 2327 mSDtfsCounter, 27 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6944 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 [2024-11-27 23:21:03,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6944 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:21:03,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5885 states. [2024-11-27 23:21:03,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5885 to 5885. [2024-11-27 23:21:03,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5885 states, 4893 states have (on average 1.7318618434498263) internal successors, (8474), 5850 states have internal predecessors, (8474), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-27 23:21:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5885 states to 5885 states and 8544 transitions. [2024-11-27 23:21:03,251 INFO L78 Accepts]: Start accepts. Automaton has 5885 states and 8544 transitions. Word has length 52 [2024-11-27 23:21:03,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:03,251 INFO L471 AbstractCegarLoop]: Abstraction has 5885 states and 8544 transitions. [2024-11-27 23:21:03,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:03,251 INFO L276 IsEmpty]: Start isEmpty. Operand 5885 states and 8544 transitions. [2024-11-27 23:21:03,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-27 23:21:03,252 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:03,253 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] [2024-11-27 23:21:03,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-27 23:21:03,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:03,454 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:21:03,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:03,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1298864554, now seen corresponding path program 1 times [2024-11-27 23:21:03,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:21:03,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438624127] [2024-11-27 23:21:03,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:03,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:03,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:03,460 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:03,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 23:21:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:03,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:21:03,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:04,209 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:21:04,209 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:21:04,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438624127] [2024-11-27 23:21:04,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438624127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:04,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:04,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:21:04,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144154928] [2024-11-27 23:21:04,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:04,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:21:04,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:21:04,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:21:04,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:21:04,211 INFO L87 Difference]: Start difference. First operand 5885 states and 8544 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:04,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:04,454 INFO L93 Difference]: Finished difference Result 8301 states and 11630 transitions. [2024-11-27 23:21:04,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:21:04,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-11-27 23:21:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:04,467 INFO L225 Difference]: With dead ends: 8301 [2024-11-27 23:21:04,467 INFO L226 Difference]: Without dead ends: 8301 [2024-11-27 23:21:04,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:21:04,468 INFO L435 NwaCegarLoop]: 2426 mSDtfsCounter, 1516 mSDsluCounter, 2280 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 4706 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:04,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 4706 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:21:04,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8301 states. [2024-11-27 23:21:04,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8301 to 7485. [2024-11-27 23:21:04,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7485 states, 6484 states have (on average 1.7134484885872918) internal successors, (11110), 7438 states have internal predecessors, (11110), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-27 23:21:04,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7485 states to 7485 states and 11204 transitions. [2024-11-27 23:21:04,613 INFO L78 Accepts]: Start accepts. Automaton has 7485 states and 11204 transitions. Word has length 53 [2024-11-27 23:21:04,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:04,613 INFO L471 AbstractCegarLoop]: Abstraction has 7485 states and 11204 transitions. [2024-11-27 23:21:04,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:04,614 INFO L276 IsEmpty]: Start isEmpty. Operand 7485 states and 11204 transitions. [2024-11-27 23:21:04,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-27 23:21:04,616 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:04,616 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] [2024-11-27 23:21:04,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-27 23:21:04,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:04,817 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr381REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:21:04,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:04,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1221998629, now seen corresponding path program 1 times [2024-11-27 23:21:04,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:21:04,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305525279] [2024-11-27 23:21:04,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:04,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:04,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:04,820 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:04,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 23:21:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:05,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:21:05,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:05,320 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:21:05,320 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:21:05,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305525279] [2024-11-27 23:21:05,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305525279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:05,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:05,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:21:05,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351938612] [2024-11-27 23:21:05,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:05,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:21:05,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:21:05,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:21:05,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:21:05,325 INFO L87 Difference]: Start difference. First operand 7485 states and 11204 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:05,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:05,544 INFO L93 Difference]: Finished difference Result 6859 states and 10192 transitions. [2024-11-27 23:21:05,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:21:05,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-27 23:21:05,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:05,557 INFO L225 Difference]: With dead ends: 6859 [2024-11-27 23:21:05,557 INFO L226 Difference]: Without dead ends: 6859 [2024-11-27 23:21:05,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:21:05,559 INFO L435 NwaCegarLoop]: 2292 mSDtfsCounter, 76 mSDsluCounter, 4491 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 6783 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 [2024-11-27 23:21:05,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 6783 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:21:05,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6859 states. [2024-11-27 23:21:05,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6859 to 6849. [2024-11-27 23:21:05,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6849 states, 5860 states have (on average 1.7215017064846416) internal successors, (10088), 6802 states have internal predecessors, (10088), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-27 23:21:05,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6849 states to 6849 states and 10182 transitions. [2024-11-27 23:21:05,700 INFO L78 Accepts]: Start accepts. Automaton has 6849 states and 10182 transitions. Word has length 56 [2024-11-27 23:21:05,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:05,700 INFO L471 AbstractCegarLoop]: Abstraction has 6849 states and 10182 transitions. [2024-11-27 23:21:05,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:05,700 INFO L276 IsEmpty]: Start isEmpty. Operand 6849 states and 10182 transitions. [2024-11-27 23:21:05,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-27 23:21:05,702 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:05,702 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] [2024-11-27 23:21:05,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-27 23:21:05,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:05,903 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:21:05,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:05,903 INFO L85 PathProgramCache]: Analyzing trace with hash 726112748, now seen corresponding path program 1 times [2024-11-27 23:21:05,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:21:05,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382466803] [2024-11-27 23:21:05,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:05,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:05,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:05,906 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:05,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 23:21:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:06,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:21:06,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:06,325 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:21:06,325 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:21:06,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382466803] [2024-11-27 23:21:06,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382466803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:06,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:06,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:21:06,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042938635] [2024-11-27 23:21:06,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:06,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:21:06,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:21:06,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:21:06,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:21:06,326 INFO L87 Difference]: Start difference. First operand 6849 states and 10182 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:06,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:06,484 INFO L93 Difference]: Finished difference Result 6242 states and 9302 transitions. [2024-11-27 23:21:06,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:21:06,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-27 23:21:06,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:06,491 INFO L225 Difference]: With dead ends: 6242 [2024-11-27 23:21:06,491 INFO L226 Difference]: Without dead ends: 6242 [2024-11-27 23:21:06,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:21:06,492 INFO L435 NwaCegarLoop]: 2246 mSDtfsCounter, 56 mSDsluCounter, 4419 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6665 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 [2024-11-27 23:21:06,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6665 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:21:06,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6242 states. [2024-11-27 23:21:06,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6242 to 6238. [2024-11-27 23:21:06,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 5272 states have (on average 1.7458270106221547) internal successors, (9204), 6191 states have internal predecessors, (9204), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-27 23:21:06,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 9298 transitions. [2024-11-27 23:21:06,552 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 9298 transitions. Word has length 56 [2024-11-27 23:21:06,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:06,552 INFO L471 AbstractCegarLoop]: Abstraction has 6238 states and 9298 transitions. [2024-11-27 23:21:06,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:06,552 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 9298 transitions. [2024-11-27 23:21:06,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-27 23:21:06,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:06,554 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] [2024-11-27 23:21:06,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-27 23:21:06,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:06,754 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:21:06,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:06,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1590950975, now seen corresponding path program 1 times [2024-11-27 23:21:06,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:21:06,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224601804] [2024-11-27 23:21:06,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:06,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:06,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:06,757 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:06,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 23:21:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:07,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:21:07,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:07,095 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 23:21:07,100 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 23:21:07,107 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 33 treesize of output 31 [2024-11-27 23:21:07,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:21:07,151 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 62 treesize of output 22 [2024-11-27 23:21:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:07,193 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:21:07,193 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:21:07,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224601804] [2024-11-27 23:21:07,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224601804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:07,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:07,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:21:07,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143384309] [2024-11-27 23:21:07,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:07,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:21:07,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:21:07,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:21:07,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:21:07,197 INFO L87 Difference]: Start difference. First operand 6238 states and 9298 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:08,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:08,635 INFO L93 Difference]: Finished difference Result 7085 states and 10301 transitions. [2024-11-27 23:21:08,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:21:08,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-27 23:21:08,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:08,648 INFO L225 Difference]: With dead ends: 7085 [2024-11-27 23:21:08,648 INFO L226 Difference]: Without dead ends: 7085 [2024-11-27 23:21:08,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:21:08,650 INFO L435 NwaCegarLoop]: 2368 mSDtfsCounter, 1702 mSDsluCounter, 3801 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 6169 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:08,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 6169 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 23:21:08,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7085 states. [2024-11-27 23:21:08,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7085 to 6115. [2024-11-27 23:21:08,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6115 states, 5150 states have (on average 1.7520388349514564) internal successors, (9023), 6069 states have internal predecessors, (9023), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-27 23:21:08,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6115 states to 6115 states and 9115 transitions. [2024-11-27 23:21:08,725 INFO L78 Accepts]: Start accepts. Automaton has 6115 states and 9115 transitions. Word has length 60 [2024-11-27 23:21:08,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:08,725 INFO L471 AbstractCegarLoop]: Abstraction has 6115 states and 9115 transitions. [2024-11-27 23:21:08,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:08,726 INFO L276 IsEmpty]: Start isEmpty. Operand 6115 states and 9115 transitions. [2024-11-27 23:21:08,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 23:21:08,726 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:08,726 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] [2024-11-27 23:21:08,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-27 23:21:08,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:08,927 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr381REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:21:08,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:08,927 INFO L85 PathProgramCache]: Analyzing trace with hash -706918385, now seen corresponding path program 1 times [2024-11-27 23:21:08,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:21:08,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1815772724] [2024-11-27 23:21:08,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:08,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:08,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:08,930 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:08,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 23:21:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:09,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:21:09,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:09,383 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 23:21:09,384 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 23:21:09,386 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 35 treesize of output 29 [2024-11-27 23:21:09,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:21:09,784 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 91 treesize of output 31 [2024-11-27 23:21:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:09,832 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:21:09,832 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:21:09,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815772724] [2024-11-27 23:21:09,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815772724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:09,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:09,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:21:09,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350726235] [2024-11-27 23:21:09,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:09,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:21:09,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:21:09,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:21:09,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:21:09,834 INFO L87 Difference]: Start difference. First operand 6115 states and 9115 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:10,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:10,987 INFO L93 Difference]: Finished difference Result 6367 states and 9101 transitions. [2024-11-27 23:21:10,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:21:10,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-11-27 23:21:10,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:10,995 INFO L225 Difference]: With dead ends: 6367 [2024-11-27 23:21:10,995 INFO L226 Difference]: Without dead ends: 6367 [2024-11-27 23:21:10,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:21:10,996 INFO L435 NwaCegarLoop]: 2250 mSDtfsCounter, 907 mSDsluCounter, 7431 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 9681 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:10,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 9681 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 23:21:11,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6367 states. [2024-11-27 23:21:11,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6367 to 5595. [2024-11-27 23:21:11,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5595 states, 4630 states have (on average 1.7764578833693305) internal successors, (8225), 5552 states have internal predecessors, (8225), 43 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (43), 40 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-27 23:21:11,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5595 states to 5595 states and 8311 transitions. [2024-11-27 23:21:11,060 INFO L78 Accepts]: Start accepts. Automaton has 5595 states and 8311 transitions. Word has length 64 [2024-11-27 23:21:11,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:11,060 INFO L471 AbstractCegarLoop]: Abstraction has 5595 states and 8311 transitions. [2024-11-27 23:21:11,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:11,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5595 states and 8311 transitions. [2024-11-27 23:21:11,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 23:21:11,061 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:11,061 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] [2024-11-27 23:21:11,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-27 23:21:11,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:11,262 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:21:11,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:11,262 INFO L85 PathProgramCache]: Analyzing trace with hash 2045940128, now seen corresponding path program 1 times [2024-11-27 23:21:11,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:21:11,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216231418] [2024-11-27 23:21:11,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:11,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:11,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:11,264 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:11,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-27 23:21:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:11,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:21:11,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:11,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:21:12,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:21:12,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-27 23:21:12,426 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:21:12,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:21:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:12,437 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:21:12,437 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:21:12,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216231418] [2024-11-27 23:21:12,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216231418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:12,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:12,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:21:12,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134691621] [2024-11-27 23:21:12,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:12,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:21:12,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:21:12,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:21:12,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:21:12,440 INFO L87 Difference]: Start difference. First operand 5595 states and 8311 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:19,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:20,000 INFO L93 Difference]: Finished difference Result 5511 states and 8068 transitions. [2024-11-27 23:21:20,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:21:20,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-11-27 23:21:20,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:20,011 INFO L225 Difference]: With dead ends: 5511 [2024-11-27 23:21:20,011 INFO L226 Difference]: Without dead ends: 5511 [2024-11-27 23:21:20,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:21:20,019 INFO L435 NwaCegarLoop]: 1082 mSDtfsCounter, 3375 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 2415 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3385 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 2522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:20,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3385 Valid, 1898 Invalid, 2522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2415 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-27 23:21:20,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5511 states. [2024-11-27 23:21:20,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5511 to 5371. [2024-11-27 23:21:20,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5371 states, 4490 states have (on average 1.7207126948775056) internal successors, (7726), 5328 states have internal predecessors, (7726), 43 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (43), 40 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-27 23:21:20,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5371 states to 5371 states and 7812 transitions. [2024-11-27 23:21:20,101 INFO L78 Accepts]: Start accepts. Automaton has 5371 states and 7812 transitions. Word has length 64 [2024-11-27 23:21:20,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:20,102 INFO L471 AbstractCegarLoop]: Abstraction has 5371 states and 7812 transitions. [2024-11-27 23:21:20,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:20,102 INFO L276 IsEmpty]: Start isEmpty. Operand 5371 states and 7812 transitions. [2024-11-27 23:21:20,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 23:21:20,103 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:20,103 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] [2024-11-27 23:21:20,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-27 23:21:20,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:20,304 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:21:20,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:20,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2115533845, now seen corresponding path program 1 times [2024-11-27 23:21:20,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:21:20,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106655484] [2024-11-27 23:21:20,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:20,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:20,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:20,307 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:20,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-27 23:21:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:20,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:21:20,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:20,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-27 23:21:20,749 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 [2024-11-27 23:21:20,794 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 [2024-11-27 23:21:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:20,813 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:21:20,813 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:21:20,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106655484] [2024-11-27 23:21:20,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106655484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:20,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:20,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:21:20,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41697559] [2024-11-27 23:21:20,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:20,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:21:20,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:21:20,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:21:20,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:21:20,815 INFO L87 Difference]: Start difference. First operand 5371 states and 7812 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:28,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:28,016 INFO L93 Difference]: Finished difference Result 5370 states and 7809 transitions. [2024-11-27 23:21:28,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:21:28,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-11-27 23:21:28,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:28,026 INFO L225 Difference]: With dead ends: 5370 [2024-11-27 23:21:28,026 INFO L226 Difference]: Without dead ends: 5370 [2024-11-27 23:21:28,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:21:28,027 INFO L435 NwaCegarLoop]: 2173 mSDtfsCounter, 2 mSDsluCounter, 3641 mSDsCounter, 0 mSdLazyCounter, 2885 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5814 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:28,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5814 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2885 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-27 23:21:28,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5370 states. [2024-11-27 23:21:28,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5370 to 5370. [2024-11-27 23:21:28,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5370 states, 4490 states have (on average 1.7200445434298441) internal successors, (7723), 5327 states have internal predecessors, (7723), 43 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (43), 40 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-27 23:21:28,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5370 states to 5370 states and 7809 transitions. [2024-11-27 23:21:28,108 INFO L78 Accepts]: Start accepts. Automaton has 5370 states and 7809 transitions. Word has length 69 [2024-11-27 23:21:28,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:28,108 INFO L471 AbstractCegarLoop]: Abstraction has 5370 states and 7809 transitions. [2024-11-27 23:21:28,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:28,108 INFO L276 IsEmpty]: Start isEmpty. Operand 5370 states and 7809 transitions. [2024-11-27 23:21:28,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 23:21:28,109 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:28,109 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] [2024-11-27 23:21:28,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-27 23:21:28,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:28,309 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:21:28,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:28,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2115533846, now seen corresponding path program 1 times [2024-11-27 23:21:28,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:21:28,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413325244] [2024-11-27 23:21:28,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:28,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:28,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:28,313 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:28,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-27 23:21:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:28,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 23:21:28,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:28,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:21:28,777 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 [2024-11-27 23:21:28,782 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 [2024-11-27 23:21:28,846 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 21 treesize of output 9 [2024-11-27 23:21:28,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:28,871 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:21:28,871 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:21:28,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413325244] [2024-11-27 23:21:28,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413325244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:28,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:28,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:21:28,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835171640] [2024-11-27 23:21:28,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:28,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:21:28,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:21:28,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:21:28,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:21:28,872 INFO L87 Difference]: Start difference. First operand 5370 states and 7809 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:38,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:38,262 INFO L93 Difference]: Finished difference Result 5369 states and 7806 transitions. [2024-11-27 23:21:38,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:21:38,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-11-27 23:21:38,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:38,270 INFO L225 Difference]: With dead ends: 5369 [2024-11-27 23:21:38,270 INFO L226 Difference]: Without dead ends: 5369 [2024-11-27 23:21:38,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:21:38,271 INFO L435 NwaCegarLoop]: 2173 mSDtfsCounter, 1 mSDsluCounter, 3598 mSDsCounter, 0 mSdLazyCounter, 2925 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5771 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:38,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5771 Invalid, 2926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2925 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2024-11-27 23:21:38,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5369 states. [2024-11-27 23:21:38,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5369 to 5369. [2024-11-27 23:21:38,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5369 states, 4487 states have (on average 1.7205259638956987) internal successors, (7720), 5326 states have internal predecessors, (7720), 43 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (43), 40 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-27 23:21:38,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5369 states to 5369 states and 7806 transitions. [2024-11-27 23:21:38,369 INFO L78 Accepts]: Start accepts. Automaton has 5369 states and 7806 transitions. Word has length 69 [2024-11-27 23:21:38,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:38,369 INFO L471 AbstractCegarLoop]: Abstraction has 5369 states and 7806 transitions. [2024-11-27 23:21:38,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:38,370 INFO L276 IsEmpty]: Start isEmpty. Operand 5369 states and 7806 transitions. [2024-11-27 23:21:38,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-27 23:21:38,371 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:38,371 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] [2024-11-27 23:21:38,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-27 23:21:38,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:38,571 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:21:38,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:38,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2089007780, now seen corresponding path program 1 times [2024-11-27 23:21:38,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:21:38,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1299978480] [2024-11-27 23:21:38,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:38,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:38,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:38,575 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:38,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-27 23:21:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:38,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:21:39,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:39,010 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 [2024-11-27 23:21:39,136 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 [2024-11-27 23:21:39,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:39,162 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:21:39,162 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:21:39,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299978480] [2024-11-27 23:21:39,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299978480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:39,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:39,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:21:39,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846293042] [2024-11-27 23:21:39,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:39,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:21:39,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:21:39,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:21:39,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:21:39,166 INFO L87 Difference]: Start difference. First operand 5369 states and 7806 transitions. Second operand has 7 states, 5 states have (on average 15.0) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-27 23:21:47,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:47,616 INFO L93 Difference]: Finished difference Result 5393 states and 7853 transitions. [2024-11-27 23:21:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:21:47,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 15.0) internal successors, (75), 6 states have internal predecessors, (75), 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 77 [2024-11-27 23:21:47,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:47,627 INFO L225 Difference]: With dead ends: 5393 [2024-11-27 23:21:47,627 INFO L226 Difference]: Without dead ends: 5393 [2024-11-27 23:21:47,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:21:47,628 INFO L435 NwaCegarLoop]: 2137 mSDtfsCounter, 27 mSDsluCounter, 5954 mSDsCounter, 0 mSdLazyCounter, 2786 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 8091 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:47,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 8091 Invalid, 2797 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 2786 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-27 23:21:47,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2024-11-27 23:21:47,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 5381. [2024-11-27 23:21:47,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5381 states, 4498 states have (on average 1.7196531791907514) internal successors, (7735), 5335 states have internal predecessors, (7735), 43 states have call successors, (43), 3 states have call predecessors, (43), 4 states have return successors, (60), 43 states have call predecessors, (60), 43 states have call successors, (60) [2024-11-27 23:21:47,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5381 states to 5381 states and 7838 transitions. [2024-11-27 23:21:47,760 INFO L78 Accepts]: Start accepts. Automaton has 5381 states and 7838 transitions. Word has length 77 [2024-11-27 23:21:47,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:47,760 INFO L471 AbstractCegarLoop]: Abstraction has 5381 states and 7838 transitions. [2024-11-27 23:21:47,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 15.0) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-27 23:21:47,760 INFO L276 IsEmpty]: Start isEmpty. Operand 5381 states and 7838 transitions. [2024-11-27 23:21:47,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-27 23:21:47,761 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:47,761 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] [2024-11-27 23:21:47,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-27 23:21:47,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:47,962 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:21:47,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:47,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2089007779, now seen corresponding path program 1 times [2024-11-27 23:21:47,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:21:47,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55442445] [2024-11-27 23:21:47,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:47,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:47,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:47,968 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:47,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-27 23:21:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:48,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:21:48,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:48,427 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:21:48,427 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:21:48,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55442445] [2024-11-27 23:21:48,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55442445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:48,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:48,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:21:48,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055802888] [2024-11-27 23:21:48,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:48,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:21:48,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:21:48,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:21:48,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:21:48,429 INFO L87 Difference]: Start difference. First operand 5381 states and 7838 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-27 23:21:48,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:48,549 INFO L93 Difference]: Finished difference Result 5372 states and 7814 transitions. [2024-11-27 23:21:48,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:21:48,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 77 [2024-11-27 23:21:48,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:48,566 INFO L225 Difference]: With dead ends: 5372 [2024-11-27 23:21:48,566 INFO L226 Difference]: Without dead ends: 5372 [2024-11-27 23:21:48,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:21:48,567 INFO L435 NwaCegarLoop]: 2172 mSDtfsCounter, 0 mSDsluCounter, 4336 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6508 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:48,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6508 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:21:48,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2024-11-27 23:21:48,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 5372. [2024-11-27 23:21:48,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5372 states, 4489 states have (on average 1.720427712185342) internal successors, (7723), 5329 states have internal predecessors, (7723), 43 states have call successors, (43), 3 states have call predecessors, (43), 4 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2024-11-27 23:21:48,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 7814 transitions. [2024-11-27 23:21:48,665 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 7814 transitions. Word has length 77 [2024-11-27 23:21:48,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:48,665 INFO L471 AbstractCegarLoop]: Abstraction has 5372 states and 7814 transitions. [2024-11-27 23:21:48,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-27 23:21:48,666 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 7814 transitions. [2024-11-27 23:21:48,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-27 23:21:48,667 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:48,667 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, 1] [2024-11-27 23:21:48,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-27 23:21:48,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:48,867 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:21:48,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1532987221, now seen corresponding path program 1 times [2024-11-27 23:21:48,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:21:48,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724121799] [2024-11-27 23:21:48,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:48,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:48,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:48,871 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:48,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-27 23:21:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:49,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:21:49,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:49,392 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:49,487 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:21:49,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724121799] [2024-11-27 23:21:49,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724121799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:49,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:21:49,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-27 23:21:49,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028162777] [2024-11-27 23:21:49,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:49,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:21:49,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:21:49,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:21:49,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:21:49,488 INFO L87 Difference]: Start difference. First operand 5372 states and 7814 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2024-11-27 23:21:49,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:49,733 INFO L93 Difference]: Finished difference Result 5384 states and 7835 transitions. [2024-11-27 23:21:49,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:21:49,734 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 78 [2024-11-27 23:21:49,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:49,743 INFO L225 Difference]: With dead ends: 5384 [2024-11-27 23:21:49,743 INFO L226 Difference]: Without dead ends: 5384 [2024-11-27 23:21:49,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:21:49,744 INFO L435 NwaCegarLoop]: 2171 mSDtfsCounter, 8 mSDsluCounter, 6502 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8673 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:49,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8673 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:21:49,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5384 states. [2024-11-27 23:21:49,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5384 to 5382. [2024-11-27 23:21:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 4498 states have (on average 1.7203201422854602) internal successors, (7738), 5338 states have internal predecessors, (7738), 43 states have call successors, (43), 4 states have call predecessors, (43), 5 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2024-11-27 23:21:49,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 7829 transitions. [2024-11-27 23:21:49,816 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 7829 transitions. Word has length 78 [2024-11-27 23:21:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:49,816 INFO L471 AbstractCegarLoop]: Abstraction has 5382 states and 7829 transitions. [2024-11-27 23:21:49,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2024-11-27 23:21:49,817 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 7829 transitions. [2024-11-27 23:21:49,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-27 23:21:49,817 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:49,817 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, 1] [2024-11-27 23:21:49,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-27 23:21:50,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:50,019 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:21:50,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:50,019 INFO L85 PathProgramCache]: Analyzing trace with hash -996794084, now seen corresponding path program 2 times [2024-11-27 23:21:50,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:21:50,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [56623532] [2024-11-27 23:21:50,020 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:21:50,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:50,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:50,023 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:50,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-27 23:22:12,592 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:22:12,592 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:12,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-27 23:22:12,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:12,811 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:22:12,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:22:12,844 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 [2024-11-27 23:22:13,175 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:22:13,175 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 [2024-11-27 23:22:13,233 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 [2024-11-27 23:22:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 23:22:13,262 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:22:13,389 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-27 23:22:13,389 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 [2024-11-27 23:22:13,453 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:22:13,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56623532] [2024-11-27 23:22:13,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56623532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:13,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [902386259] [2024-11-27 23:22:13,454 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:22:13,455 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 23:22:13,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 23:22:13,461 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 23:22:13,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-27 23:22:15,468 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:22:15,468 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:15,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:22:15,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:15,767 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:22:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:16,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [902386259] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:22:16,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:22:16,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-11-27 23:22:16,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625035771] [2024-11-27 23:22:16,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:22:16,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 23:22:16,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:22:16,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 23:22:16,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=552, Unknown=7, NotChecked=0, Total=650 [2024-11-27 23:22:16,189 INFO L87 Difference]: Start difference. First operand 5382 states and 7829 transitions. Second operand has 24 states, 23 states have (on average 6.304347826086956) internal successors, (145), 23 states have internal predecessors, (145), 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) [2024-11-27 23:22:38,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:38,894 INFO L93 Difference]: Finished difference Result 5398 states and 7858 transitions. [2024-11-27 23:22:38,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-27 23:22:38,894 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.304347826086956) internal successors, (145), 23 states have internal predecessors, (145), 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 81 [2024-11-27 23:22:38,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:38,905 INFO L225 Difference]: With dead ends: 5398 [2024-11-27 23:22:38,905 INFO L226 Difference]: Without dead ends: 5394 [2024-11-27 23:22:38,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=416, Invalid=2331, Unknown=9, NotChecked=0, Total=2756 [2024-11-27 23:22:38,906 INFO L435 NwaCegarLoop]: 1394 mSDtfsCounter, 1755 mSDsluCounter, 16142 mSDsCounter, 0 mSdLazyCounter, 11425 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 17536 SdHoareTripleChecker+Invalid, 11474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:38,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 17536 Invalid, 11474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 11425 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2024-11-27 23:22:38,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5394 states. [2024-11-27 23:22:38,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5394 to 5390. [2024-11-27 23:22:38,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 4507 states have (on average 1.718881739516308) internal successors, (7747), 5346 states have internal predecessors, (7747), 43 states have call successors, (43), 4 states have call predecessors, (43), 5 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2024-11-27 23:22:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 7838 transitions. [2024-11-27 23:22:38,955 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 7838 transitions. Word has length 81 [2024-11-27 23:22:38,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:38,956 INFO L471 AbstractCegarLoop]: Abstraction has 5390 states and 7838 transitions. [2024-11-27 23:22:38,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.304347826086956) internal successors, (145), 23 states have internal predecessors, (145), 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) [2024-11-27 23:22:38,956 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 7838 transitions. [2024-11-27 23:22:38,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-27 23:22:38,956 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:38,956 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, 1] [2024-11-27 23:22:38,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-27 23:22:39,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2024-11-27 23:22:39,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-27 23:22:39,357 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:22:39,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:39,357 INFO L85 PathProgramCache]: Analyzing trace with hash -171268419, now seen corresponding path program 1 times [2024-11-27 23:22:39,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:22:39,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366230689] [2024-11-27 23:22:39,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:39,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:39,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:39,359 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:39,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-27 23:22:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:39,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 23:22:39,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:40,040 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:40,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:22:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:40,730 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:22:40,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366230689] [2024-11-27 23:22:40,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366230689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:22:40,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:22:40,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-27 23:22:40,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604967719] [2024-11-27 23:22:40,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:22:40,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-27 23:22:40,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:22:40,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-27 23:22:40,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-27 23:22:40,732 INFO L87 Difference]: Start difference. First operand 5390 states and 7838 transitions. Second operand has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 26 states have internal predecessors, (98), 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) [2024-11-27 23:22:42,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:42,984 INFO L93 Difference]: Finished difference Result 5414 states and 7877 transitions. [2024-11-27 23:22:42,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-27 23:22:42,985 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 26 states have internal predecessors, (98), 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 87 [2024-11-27 23:22:42,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:42,998 INFO L225 Difference]: With dead ends: 5414 [2024-11-27 23:22:42,999 INFO L226 Difference]: Without dead ends: 5408 [2024-11-27 23:22:42,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-27 23:22:43,000 INFO L435 NwaCegarLoop]: 2171 mSDtfsCounter, 18 mSDsluCounter, 28159 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 30330 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:43,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 30330 Invalid, 650 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:22:43,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5408 states. [2024-11-27 23:22:43,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5408 to 5408. [2024-11-27 23:22:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5408 states, 4525 states have (on average 1.7171270718232043) internal successors, (7770), 5364 states have internal predecessors, (7770), 43 states have call successors, (43), 4 states have call predecessors, (43), 5 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2024-11-27 23:22:43,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5408 states to 5408 states and 7861 transitions. [2024-11-27 23:22:43,063 INFO L78 Accepts]: Start accepts. Automaton has 5408 states and 7861 transitions. Word has length 87 [2024-11-27 23:22:43,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:43,063 INFO L471 AbstractCegarLoop]: Abstraction has 5408 states and 7861 transitions. [2024-11-27 23:22:43,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 26 states have internal predecessors, (98), 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) [2024-11-27 23:22:43,064 INFO L276 IsEmpty]: Start isEmpty. Operand 5408 states and 7861 transitions. [2024-11-27 23:22:43,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-27 23:22:43,064 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:43,064 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, 1] [2024-11-27 23:22:43,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-27 23:22:43,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:43,265 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:22:43,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:43,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1143310845, now seen corresponding path program 2 times [2024-11-27 23:22:43,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:22:43,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301117008] [2024-11-27 23:22:43,267 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:22:43,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:43,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:43,269 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:43,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-27 23:23:28,298 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:23:28,298 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:28,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-27 23:23:28,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:28,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:23:28,592 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:23:28,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:23:28,658 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 [2024-11-27 23:23:28,666 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 [2024-11-27 23:23:28,866 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 [2024-11-27 23:23:28,878 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 [2024-11-27 23:23:29,590 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:23:29,590 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 [2024-11-27 23:23:29,612 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 [2024-11-27 23:23:29,671 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 [2024-11-27 23:23:29,682 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 [2024-11-27 23:23:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-27 23:23:29,718 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:30,474 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2359 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_2359) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_2358 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2359 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_2359) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_2358) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-27 23:23:30,482 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:23:30,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301117008] [2024-11-27 23:23:30,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301117008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:30,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1291854718] [2024-11-27 23:23:30,483 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:23:30,483 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 23:23:30,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 23:23:30,488 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 23:23:30,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-27 23:23:33,050 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:23:33,050 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:33,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-27 23:23:33,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:34,563 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:38,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1291854718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:38,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:38,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2024-11-27 23:23:38,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449681951] [2024-11-27 23:23:38,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:38,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-27 23:23:38,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:23:38,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-27 23:23:38,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2024-11-27 23:23:38,057 INFO L87 Difference]: Start difference. First operand 5408 states and 7861 transitions. Second operand has 58 states, 57 states have (on average 3.175438596491228) internal successors, (181), 58 states have internal predecessors, (181), 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) [2024-11-27 23:25:09,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:09,615 INFO L93 Difference]: Finished difference Result 5504 states and 8013 transitions. [2024-11-27 23:25:09,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-27 23:25:09,615 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.175438596491228) internal successors, (181), 58 states have internal predecessors, (181), 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 99 [2024-11-27 23:25:09,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:09,632 INFO L225 Difference]: With dead ends: 5504 [2024-11-27 23:25:09,632 INFO L226 Difference]: Without dead ends: 5492 [2024-11-27 23:25:09,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5778 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=5256, Invalid=18617, Unknown=1, NotChecked=306, Total=24180 [2024-11-27 23:25:09,639 INFO L435 NwaCegarLoop]: 1420 mSDtfsCounter, 1761 mSDsluCounter, 43265 mSDsCounter, 0 mSdLazyCounter, 29788 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 44685 SdHoareTripleChecker+Invalid, 29912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 29788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:09,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 44685 Invalid, 29912 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [124 Valid, 29788 Invalid, 0 Unknown, 0 Unchecked, 71.1s Time] [2024-11-27 23:25:09,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5492 states. [2024-11-27 23:25:09,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5492 to 5490. [2024-11-27 23:25:09,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5490 states, 4607 states have (on average 1.7065335359235945) internal successors, (7862), 5445 states have internal predecessors, (7862), 43 states have call successors, (43), 5 states have call predecessors, (43), 6 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2024-11-27 23:25:09,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5490 states to 5490 states and 7953 transitions. [2024-11-27 23:25:09,715 INFO L78 Accepts]: Start accepts. Automaton has 5490 states and 7953 transitions. Word has length 99 [2024-11-27 23:25:09,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:09,716 INFO L471 AbstractCegarLoop]: Abstraction has 5490 states and 7953 transitions. [2024-11-27 23:25:09,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.175438596491228) internal successors, (181), 58 states have internal predecessors, (181), 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) [2024-11-27 23:25:09,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5490 states and 7953 transitions. [2024-11-27 23:25:09,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-27 23:25:09,717 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:09,718 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] [2024-11-27 23:25:09,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-27 23:25:09,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2024-11-27 23:25:10,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-27 23:25:10,119 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:25:10,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:10,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1306061159, now seen corresponding path program 1 times [2024-11-27 23:25:10,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:25:10,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901318554] [2024-11-27 23:25:10,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:10,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:10,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:10,124 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:10,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-27 23:25:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:10,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-27 23:25:10,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:11,065 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:25:11,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:25:11,098 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 [2024-11-27 23:25:11,555 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:25:11,556 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 31 treesize of output 32 [2024-11-27 23:25:11,630 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:25:11,630 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 [2024-11-27 23:25:11,693 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 [2024-11-27 23:25:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-27 23:25:11,722 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:25:11,784 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-27 23:25:11,784 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 [2024-11-27 23:25:11,792 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3018 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_3018) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem39#1.base|)) is different from false [2024-11-27 23:25:11,806 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3018 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3018) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-27 23:25:12,358 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3018 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3064 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_3064)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_3018) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-27 23:25:12,360 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:25:12,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901318554] [2024-11-27 23:25:12,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901318554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:12,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [162275948] [2024-11-27 23:25:12,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:12,361 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 23:25:12,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 23:25:12,363 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 23:25:12,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-27 23:25:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:16,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-27 23:25:16,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:16,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-27 23:25:17,082 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-27 23:25:17,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-27 23:25:17,171 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 [2024-11-27 23:25:17,398 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 [2024-11-27 23:25:18,928 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:25:18,928 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 [2024-11-27 23:25:19,119 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:25:19,119 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 [2024-11-27 23:25:19,159 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 [2024-11-27 23:25:19,257 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-27 23:25:19,257 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:25:19,405 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3488 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3488) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-27 23:25:20,015 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3534 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3488 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_3534))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3488)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-27 23:25:20,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [162275948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:20,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:25:20,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2024-11-27 23:25:20,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549581641] [2024-11-27 23:25:20,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:25:20,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:25:20,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:25:20,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:25:20,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=346, Unknown=16, NotChecked=210, Total=650 [2024-11-27 23:25:20,020 INFO L87 Difference]: Start difference. First operand 5490 states and 7953 transitions. Second operand has 19 states, 16 states have (on average 8.125) internal successors, (130), 19 states have internal predecessors, (130), 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) [2024-11-27 23:25:38,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:38,091 INFO L93 Difference]: Finished difference Result 5491 states and 7956 transitions. [2024-11-27 23:25:38,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:25:38,092 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 8.125) internal successors, (130), 19 states have internal predecessors, (130), 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 124 [2024-11-27 23:25:38,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:38,109 INFO L225 Difference]: With dead ends: 5491 [2024-11-27 23:25:38,109 INFO L226 Difference]: Without dead ends: 5491 [2024-11-27 23:25:38,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=91, Invalid=418, Unknown=17, NotChecked=230, Total=756 [2024-11-27 23:25:38,110 INFO L435 NwaCegarLoop]: 1396 mSDtfsCounter, 1702 mSDsluCounter, 9133 mSDsCounter, 0 mSdLazyCounter, 7231 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 10529 SdHoareTripleChecker+Invalid, 7249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 7231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:38,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 10529 Invalid, 7249 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 7231 Invalid, 0 Unknown, 0 Unchecked, 17.7s Time] [2024-11-27 23:25:38,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5491 states. [2024-11-27 23:25:38,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5491 to 5489. [2024-11-27 23:25:38,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5489 states, 4607 states have (on average 1.7058823529411764) internal successors, (7859), 5444 states have internal predecessors, (7859), 43 states have call successors, (43), 5 states have call predecessors, (43), 6 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2024-11-27 23:25:38,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5489 states to 5489 states and 7950 transitions. [2024-11-27 23:25:38,185 INFO L78 Accepts]: Start accepts. Automaton has 5489 states and 7950 transitions. Word has length 124 [2024-11-27 23:25:38,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:38,185 INFO L471 AbstractCegarLoop]: Abstraction has 5489 states and 7950 transitions. [2024-11-27 23:25:38,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 8.125) internal successors, (130), 19 states have internal predecessors, (130), 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) [2024-11-27 23:25:38,185 INFO L276 IsEmpty]: Start isEmpty. Operand 5489 states and 7950 transitions. [2024-11-27 23:25:38,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-27 23:25:38,186 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:38,187 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] [2024-11-27 23:25:38,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2024-11-27 23:25:38,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-27 23:25:38,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:38,588 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:25:38,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:38,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1306061160, now seen corresponding path program 1 times [2024-11-27 23:25:38,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:25:38,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271135058] [2024-11-27 23:25:38,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:38,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:38,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:38,591 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:38,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-27 23:25:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:39,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-27 23:25:39,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:39,574 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:25:39,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:25:39,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:25:39,620 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 [2024-11-27 23:25:39,631 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 [2024-11-27 23:25:39,782 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 [2024-11-27 23:25:39,789 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 [2024-11-27 23:25:40,776 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:25:40,776 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 62 treesize of output 57 [2024-11-27 23:25:40,791 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 [2024-11-27 23:25:40,936 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:25:40,937 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 [2024-11-27 23:25:40,950 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 [2024-11-27 23:25:40,987 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 [2024-11-27 23:25:40,996 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 [2024-11-27 23:25:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-27 23:25:41,035 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:25:41,236 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4003 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4004 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4004) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4003) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_4004 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4004) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-27 23:25:41,268 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_4003 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4004 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_4004) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_4003) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_4004 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_4004) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2024-11-27 23:25:43,233 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4096 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4095 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4004 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4095) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4096) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4004) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4096 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4095 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4003 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4004 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4096))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4095) .cse2 v_ArrVal_4004) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_4003) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-27 23:25:43,243 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:25:43,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271135058] [2024-11-27 23:25:43,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271135058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:43,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2044369326] [2024-11-27 23:25:43,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:43,243 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 23:25:43,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 23:25:43,246 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 23:25:43,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-27 23:25:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:47,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-27 23:25:47,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:47,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-27 23:25:48,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:25:48,110 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:25:48,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:25:48,144 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 [2024-11-27 23:25:48,152 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 [2024-11-27 23:25:48,254 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 [2024-11-27 23:25:48,262 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 [2024-11-27 23:25:49,016 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:25:49,016 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 [2024-11-27 23:25:49,025 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 [2024-11-27 23:25:49,102 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:25:49,102 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 [2024-11-27 23:25:49,114 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 [2024-11-27 23:25:49,139 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 [2024-11-27 23:25:49,146 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 [2024-11-27 23:25:49,148 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-27 23:25:49,148 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:25:49,200 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4567 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4566 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4566) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4567) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_4566 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4566) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-27 23:25:49,225 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_4566 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_4566) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4567 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4566 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_4566) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_4567) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-27 23:25:50,878 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4659 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4567 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4658 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4566 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4658))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4659) .cse0 v_ArrVal_4566) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_4567) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_4659 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4658 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4566 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4659) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4658) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4566) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2024-11-27 23:25:50,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2044369326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:50,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:25:50,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 10 [2024-11-27 23:25:50,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018452862] [2024-11-27 23:25:50,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:25:50,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:25:50,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:25:50,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:25:50,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=132, Unknown=6, NotChecked=162, Total=342 [2024-11-27 23:25:50,889 INFO L87 Difference]: Start difference. First operand 5489 states and 7950 transitions. Second operand has 11 states, 9 states have (on average 12.444444444444445) internal successors, (112), 11 states have internal predecessors, (112), 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) [2024-11-27 23:26:11,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:11,279 INFO L93 Difference]: Finished difference Result 5488 states and 7947 transitions. [2024-11-27 23:26:11,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:26:11,280 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 12.444444444444445) internal successors, (112), 11 states have internal predecessors, (112), 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 124 [2024-11-27 23:26:11,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:11,295 INFO L225 Difference]: With dead ends: 5488 [2024-11-27 23:26:11,296 INFO L226 Difference]: Without dead ends: 5488 [2024-11-27 23:26:11,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 240 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=77, Invalid=283, Unknown=6, NotChecked=234, Total=600 [2024-11-27 23:26:11,297 INFO L435 NwaCegarLoop]: 1422 mSDtfsCounter, 1682 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 6987 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 6471 SdHoareTripleChecker+Invalid, 6997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 6987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:11,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1691 Valid, 6471 Invalid, 6997 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 6987 Invalid, 0 Unknown, 0 Unchecked, 19.9s Time] [2024-11-27 23:26:11,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5488 states. [2024-11-27 23:26:11,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5488 to 5488. [2024-11-27 23:26:11,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5488 states, 4607 states have (on average 1.7052311699587583) internal successors, (7856), 5443 states have internal predecessors, (7856), 43 states have call successors, (43), 5 states have call predecessors, (43), 6 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2024-11-27 23:26:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 7947 transitions. [2024-11-27 23:26:11,407 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 7947 transitions. Word has length 124 [2024-11-27 23:26:11,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:11,410 INFO L471 AbstractCegarLoop]: Abstraction has 5488 states and 7947 transitions. [2024-11-27 23:26:11,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 12.444444444444445) internal successors, (112), 11 states have internal predecessors, (112), 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) [2024-11-27 23:26:11,410 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 7947 transitions. [2024-11-27 23:26:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-27 23:26:11,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:11,412 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] [2024-11-27 23:26:11,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-27 23:26:11,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-11-27 23:26:11,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-27 23:26:11,814 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:26:11,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:11,814 INFO L85 PathProgramCache]: Analyzing trace with hash 759609827, now seen corresponding path program 1 times [2024-11-27 23:26:11,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:26:11,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977473457] [2024-11-27 23:26:11,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:11,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:11,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:26:11,817 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:26:11,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-27 23:26:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:12,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-27 23:26:12,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:26:12,792 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:26:12,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:26:12,813 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 [2024-11-27 23:26:13,239 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:26:13,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-27 23:26:13,316 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:26:13,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-27 23:26:13,397 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:26:13,397 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 [2024-11-27 23:26:13,463 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 [2024-11-27 23:26:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-27 23:26:13,497 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:26:13,566 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-27 23:26:13,567 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 [2024-11-27 23:26:13,575 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5097 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem40#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_5097) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2024-11-27 23:26:13,587 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5097 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5097) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse0)))) is different from false [2024-11-27 23:26:13,609 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5096 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5097 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5096)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_5097) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2024-11-27 23:26:13,627 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5096 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5097 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5096))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_5097) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-27 23:26:14,203 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5096 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5097 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5143 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5143))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5096)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_5097) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-27 23:26:14,207 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:26:14,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977473457] [2024-11-27 23:26:14,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977473457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:26:14,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [369231132] [2024-11-27 23:26:14,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:14,208 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 23:26:14,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 23:26:14,214 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 23:26:14,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2024-11-27 23:26:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:29,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-27 23:26:29,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:26:29,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-27 23:26:29,907 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-27 23:26:29,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-27 23:26:29,982 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 [2024-11-27 23:26:30,221 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 [2024-11-27 23:26:31,478 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:26:31,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-27 23:26:31,678 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:26:31,678 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 [2024-11-27 23:26:31,821 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:26:31,821 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 [2024-11-27 23:26:31,854 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 [2024-11-27 23:26:31,928 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-27 23:26:31,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:26:31,947 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5583 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_5583) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-27 23:26:31,959 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5583 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5583) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2024-11-27 23:26:31,977 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5582 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5583 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5582))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5583)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-27 23:26:31,990 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5582 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5583 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5582))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5583)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-27 23:26:32,519 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5629 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5582 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5583 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5629))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5582)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5583)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-27 23:26:32,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [369231132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:26:32,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:26:32,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2024-11-27 23:26:32,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46897825] [2024-11-27 23:26:32,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:26:32,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 23:26:32,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:26:32,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 23:26:32,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=396, Unknown=10, NotChecked=490, Total=992 [2024-11-27 23:26:32,525 INFO L87 Difference]: Start difference. First operand 5488 states and 7947 transitions. Second operand has 21 states, 18 states have (on average 7.555555555555555) internal successors, (136), 21 states have internal predecessors, (136), 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) [2024-11-27 23:27:02,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:02,844 INFO L93 Difference]: Finished difference Result 5489 states and 7950 transitions. [2024-11-27 23:27:02,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 23:27:02,845 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 7.555555555555555) internal successors, (136), 21 states have internal predecessors, (136), 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 127 [2024-11-27 23:27:02,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:02,851 INFO L225 Difference]: With dead ends: 5489 [2024-11-27 23:27:02,851 INFO L226 Difference]: Without dead ends: 5489 [2024-11-27 23:27:02,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=109, Invalid=473, Unknown=10, NotChecked=530, Total=1122 [2024-11-27 23:27:02,852 INFO L435 NwaCegarLoop]: 1395 mSDtfsCounter, 1691 mSDsluCounter, 15194 mSDsCounter, 0 mSdLazyCounter, 12021 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 16589 SdHoareTripleChecker+Invalid, 12038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 12021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:02,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 16589 Invalid, 12038 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [17 Valid, 12021 Invalid, 0 Unknown, 0 Unchecked, 29.9s Time] [2024-11-27 23:27:02,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5489 states. [2024-11-27 23:27:02,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5489 to 5487. [2024-11-27 23:27:02,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5487 states, 4607 states have (on average 1.7045799869763403) internal successors, (7853), 5442 states have internal predecessors, (7853), 43 states have call successors, (43), 5 states have call predecessors, (43), 6 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2024-11-27 23:27:02,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5487 states to 5487 states and 7944 transitions. [2024-11-27 23:27:02,938 INFO L78 Accepts]: Start accepts. Automaton has 5487 states and 7944 transitions. Word has length 127 [2024-11-27 23:27:02,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:02,939 INFO L471 AbstractCegarLoop]: Abstraction has 5487 states and 7944 transitions. [2024-11-27 23:27:02,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 7.555555555555555) internal successors, (136), 21 states have internal predecessors, (136), 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) [2024-11-27 23:27:02,939 INFO L276 IsEmpty]: Start isEmpty. Operand 5487 states and 7944 transitions. [2024-11-27 23:27:02,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-27 23:27:02,939 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:02,940 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] [2024-11-27 23:27:02,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2024-11-27 23:27:03,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-27 23:27:03,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:03,340 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:27:03,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:03,341 INFO L85 PathProgramCache]: Analyzing trace with hash 759609828, now seen corresponding path program 1 times [2024-11-27 23:27:03,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:27:03,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957466363] [2024-11-27 23:27:03,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:03,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:03,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:03,344 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:03,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-27 23:27:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:04,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-27 23:27:04,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:04,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:27:04,489 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:27:04,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:27:04,527 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 [2024-11-27 23:27:04,536 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 [2024-11-27 23:27:04,680 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 [2024-11-27 23:27:04,687 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 [2024-11-27 23:27:05,613 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:27:05,613 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 [2024-11-27 23:27:05,621 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 [2024-11-27 23:27:05,736 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-27 23:27:05,736 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 67 treesize of output 39 [2024-11-27 23:27:05,748 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 [2024-11-27 23:27:05,968 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2024-11-27 23:27:05,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 64 [2024-11-27 23:27:05,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-27 23:27:05,983 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 [2024-11-27 23:27:06,018 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 [2024-11-27 23:27:06,024 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 [2024-11-27 23:27:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-27 23:27:06,058 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:06,206 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6116 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6117 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6116) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6117) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_6116 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6116) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd (_ bv12 32) .cse1)))))) is different from false [2024-11-27 23:27:06,228 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6116 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_6116) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6116 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6117 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_6116) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_6117) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-27 23:27:06,295 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) (.cse1 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base|))) (and (forall ((|ULTIMATE.start_main_#t~mem39#1.offset| (_ BitVec 32)) (v_ArrVal_6115 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6116 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6115) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| (store .cse1 (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem39#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6116) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((|ULTIMATE.start_main_#t~mem39#1.offset| (_ BitVec 32)) (v_ArrVal_6115 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6116 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6117 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| (store .cse1 (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem39#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6115) .cse3 v_ArrVal_6116) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_6117) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) is different from false [2024-11-27 23:27:08,487 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6208 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6209 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_main_#t~mem39#1.offset| (_ BitVec 32)) (v_ArrVal_6115 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6116 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6117 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6209))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 (store (select .cse4 .cse0) (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem39#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6208) .cse0 v_ArrVal_6115) .cse1 v_ArrVal_6116) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_6117) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_6208 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6209 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_main_#t~mem39#1.offset| (_ BitVec 32)) (v_ArrVal_6115 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6116 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6209))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6208) .cse6 v_ArrVal_6115) (select (select (store .cse7 .cse6 (store (select .cse7 .cse6) (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem39#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6116))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd (_ bv12 32) .cse5)))))) is different from false [2024-11-27 23:27:08,567 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:27:08,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957466363] [2024-11-27 23:27:08,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957466363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:08,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [858578757] [2024-11-27 23:27:08,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:08,567 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 23:27:08,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 23:27:08,569 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 23:27:08,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2024-11-27 23:27:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:24,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-27 23:27:24,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:24,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-27 23:27:24,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:27:24,472 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:27:24,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:27:24,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 23:27:24,493 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 [2024-11-27 23:27:24,598 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 [2024-11-27 23:27:24,603 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 [2024-11-27 23:27:25,578 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:27:25,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-27 23:27:25,593 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 [2024-11-27 23:27:25,681 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:27:25,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-27 23:27:25,691 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 [2024-11-27 23:27:25,827 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:27:25,827 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 [2024-11-27 23:27:25,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-27 23:27:25,870 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 [2024-11-27 23:27:25,876 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 [2024-11-27 23:27:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-27 23:27:25,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:25,946 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6697 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6696 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6696) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6697) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_6696 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6696) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd (_ bv12 32) .cse1)))))) is different from false [2024-11-27 23:27:25,976 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_6697 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6696 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_6696) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_6697) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_6696 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_6696) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd (_ bv12 32) .cse2))))))) is different from false [2024-11-27 23:27:26,064 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6697 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6694 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6695 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6696 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6694))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6695) .cse0 v_ArrVal_6696) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_6697) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_6694 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6695 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6696 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6695) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6694) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6696) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd (_ bv12 32) .cse3)))))) is different from false [2024-11-27 23:27:26,142 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6694 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6695 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6696 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_6695) (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_6694) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6696) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6697 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6694 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6695 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6696 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_6694))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_6695) .cse3 v_ArrVal_6696) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_6697) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-27 23:27:27,820 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6789 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6788 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6694 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6695 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6696 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6789))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6788) .cse1 v_ArrVal_6695) (select (select (store .cse2 .cse1 v_ArrVal_6694) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_6696))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6789 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6697 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6788 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6694 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6695 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6696 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6789))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_6694))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6788) .cse4 v_ArrVal_6695) .cse5 v_ArrVal_6696) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_6697) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-27 23:27:27,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [858578757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:27,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:27:27,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 13 [2024-11-27 23:27:27,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485161031] [2024-11-27 23:27:27,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:27,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:27:27,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:27:27,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:27:27,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=225, Unknown=13, NotChecked=342, Total=650 [2024-11-27 23:27:27,834 INFO L87 Difference]: Start difference. First operand 5487 states and 7944 transitions. Second operand has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:27:33,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 23:28:03,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:03,546 INFO L93 Difference]: Finished difference Result 5486 states and 7941 transitions. [2024-11-27 23:28:03,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:28:03,547 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 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 127 [2024-11-27 23:28:03,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:03,551 INFO L225 Difference]: With dead ends: 5486 [2024-11-27 23:28:03,552 INFO L226 Difference]: Without dead ends: 5486 [2024-11-27 23:28:03,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 245 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=128, Invalid=494, Unknown=14, NotChecked=486, Total=1122 [2024-11-27 23:28:03,552 INFO L435 NwaCegarLoop]: 1421 mSDtfsCounter, 1680 mSDsluCounter, 6771 mSDsCounter, 0 mSdLazyCounter, 9621 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 8192 SdHoareTripleChecker+Invalid, 9632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 9621 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:03,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 8192 Invalid, 9632 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 9621 Invalid, 1 Unknown, 0 Unchecked, 34.9s Time] [2024-11-27 23:28:03,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5486 states. [2024-11-27 23:28:03,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5486 to 5486. [2024-11-27 23:28:03,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5486 states, 4607 states have (on average 1.7039288039939222) internal successors, (7850), 5441 states have internal predecessors, (7850), 43 states have call successors, (43), 5 states have call predecessors, (43), 6 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2024-11-27 23:28:03,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 7941 transitions. [2024-11-27 23:28:03,592 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 7941 transitions. Word has length 127 [2024-11-27 23:28:03,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:03,593 INFO L471 AbstractCegarLoop]: Abstraction has 5486 states and 7941 transitions. [2024-11-27 23:28:03,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 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) [2024-11-27 23:28:03,593 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 7941 transitions. [2024-11-27 23:28:03,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-27 23:28:03,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:03,594 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, 1] [2024-11-27 23:28:03,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-27 23:28:03,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2024-11-27 23:28:03,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-27 23:28:03,994 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:28:03,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:03,995 INFO L85 PathProgramCache]: Analyzing trace with hash -645962994, now seen corresponding path program 1 times [2024-11-27 23:28:03,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:28:03,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1753750034] [2024-11-27 23:28:03,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:03,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:03,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:03,997 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:03,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-27 23:28:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:04,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-27 23:28:04,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:05,002 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:28:05,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:28:05,021 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 [2024-11-27 23:28:05,553 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:28:05,553 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 [2024-11-27 23:28:05,688 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:28:05,688 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 [2024-11-27 23:28:05,772 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:28:05,772 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 [2024-11-27 23:28:05,861 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:28:05,862 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 [2024-11-27 23:28:05,884 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 [2024-11-27 23:28:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-27 23:28:05,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:06,020 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7243 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7243) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-27 23:28:06,036 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7242 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7243 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7242))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7243)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-27 23:28:06,047 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7242 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7243 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7242))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7243)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-27 23:28:06,066 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7241 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7242 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7243 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7241))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7242)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7243)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-27 23:28:06,080 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7241 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7242 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7243 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7241))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7242)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7243)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-27 23:28:06,555 INFO L349 Elim1Store]: treesize reduction 7, result has 93.2 percent of original size [2024-11-27 23:28:06,555 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 [2024-11-27 23:28:06,570 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7241 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7242 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7243 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7289 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem37#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7289))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7241)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7242)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7243)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-27 23:28:06,573 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:28:06,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753750034] [2024-11-27 23:28:06,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753750034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:06,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1906996305] [2024-11-27 23:28:06,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:06,574 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 23:28:06,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 23:28:06,576 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 23:28:06,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2024-11-27 23:28:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:24,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-27 23:28:24,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:24,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-27 23:28:24,785 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-27 23:28:24,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-27 23:28:24,860 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 [2024-11-27 23:28:25,084 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 [2024-11-27 23:28:26,377 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:28:26,377 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 [2024-11-27 23:28:26,593 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:28:26,593 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 [2024-11-27 23:28:26,750 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:28:26,751 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 [2024-11-27 23:28:26,911 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:28:26,911 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 [2024-11-27 23:28:26,943 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 [2024-11-27 23:28:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-27 23:28:27,064 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:27,085 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7746 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7746) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-27 23:28:27,096 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7746 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7746) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-27 23:28:27,114 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7745 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7745))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7746)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-27 23:28:27,127 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7745 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7745))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7746)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-27 23:28:27,148 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7744 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7744))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7745)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7746)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-27 23:28:27,162 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7744 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7744))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7745)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7746)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-27 23:28:27,641 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7792 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7744 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7792))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7744)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7745)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7746)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-27 23:28:27,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1906996305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:27,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:28:27,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2024-11-27 23:28:27,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290723333] [2024-11-27 23:28:27,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:28:27,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 23:28:27,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:28:27,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 23:28:27,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=559, Unknown=19, NotChecked=780, Total=1482 [2024-11-27 23:28:27,650 INFO L87 Difference]: Start difference. First operand 5486 states and 7941 transitions. Second operand has 24 states, 21 states have (on average 6.761904761904762) internal successors, (142), 23 states have internal predecessors, (142), 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) [2024-11-27 23:29:02,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:02,420 INFO L93 Difference]: Finished difference Result 5487 states and 7944 transitions. [2024-11-27 23:29:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:29:02,420 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 6.761904761904762) internal successors, (142), 23 states have internal predecessors, (142), 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 130 [2024-11-27 23:29:02,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:02,425 INFO L225 Difference]: With dead ends: 5487 [2024-11-27 23:29:02,425 INFO L226 Difference]: Without dead ends: 5487 [2024-11-27 23:29:02,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=149, Invalid=754, Unknown=19, NotChecked=884, Total=1806 [2024-11-27 23:29:02,426 INFO L435 NwaCegarLoop]: 1391 mSDtfsCounter, 1686 mSDsluCounter, 17222 mSDsCounter, 0 mSdLazyCounter, 14317 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 18613 SdHoareTripleChecker+Invalid, 14336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 14317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:02,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1701 Valid, 18613 Invalid, 14336 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [19 Valid, 14317 Invalid, 0 Unknown, 0 Unchecked, 34.2s Time] [2024-11-27 23:29:02,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5487 states. [2024-11-27 23:29:02,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5487 to 5485. [2024-11-27 23:29:02,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5485 states, 4607 states have (on average 1.7032776210115042) internal successors, (7847), 5440 states have internal predecessors, (7847), 43 states have call successors, (43), 5 states have call predecessors, (43), 6 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2024-11-27 23:29:02,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5485 states to 5485 states and 7938 transitions. [2024-11-27 23:29:02,483 INFO L78 Accepts]: Start accepts. Automaton has 5485 states and 7938 transitions. Word has length 130 [2024-11-27 23:29:02,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:02,483 INFO L471 AbstractCegarLoop]: Abstraction has 5485 states and 7938 transitions. [2024-11-27 23:29:02,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 6.761904761904762) internal successors, (142), 23 states have internal predecessors, (142), 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) [2024-11-27 23:29:02,483 INFO L276 IsEmpty]: Start isEmpty. Operand 5485 states and 7938 transitions. [2024-11-27 23:29:02,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-27 23:29:02,484 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:02,484 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, 1] [2024-11-27 23:29:02,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-27 23:29:02,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (43)] Ended with exit code 0 [2024-11-27 23:29:02,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-27 23:29:02,885 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-27 23:29:02,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:02,885 INFO L85 PathProgramCache]: Analyzing trace with hash -645962993, now seen corresponding path program 1 times [2024-11-27 23:29:02,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:02,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027885180] [2024-11-27 23:29:02,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:02,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:02,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:02,888 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:02,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-27 23:29:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:03,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-27 23:29:03,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:03,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:29:03,990 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:29:03,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:29:04,042 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 [2024-11-27 23:29:04,053 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 [2024-11-27 23:29:04,204 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 [2024-11-27 23:29:04,209 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 [2024-11-27 23:29:05,189 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:29:05,190 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 [2024-11-27 23:29:05,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-27 23:29:05,342 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:29:05,342 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 [2024-11-27 23:29:05,353 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 [2024-11-27 23:29:05,487 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:29:05,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-27 23:29:05,498 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 [2024-11-27 23:29:05,640 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:29:05,640 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 [2024-11-27 23:29:05,654 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 [2024-11-27 23:29:05,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-27 23:29:05,707 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 [2024-11-27 23:29:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-27 23:29:05,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:29:06,133 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8295 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_8295) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8296 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8295 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_8295) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_8296) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-27 23:29:06,201 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8296 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8295 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8294 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8293 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8294))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8293) .cse0 v_ArrVal_8295) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_8296) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_8295 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8294 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8293 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8293) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8294) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8295) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse3) (bvadd (_ bv24 32) .cse3)))))) is different from false [2024-11-27 23:29:07,102 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8295 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8294 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8293 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8292 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8291 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8292))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8291) .cse1 v_ArrVal_8293) (select (select (store .cse2 .cse1 v_ArrVal_8294) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8295))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8296 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8295 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8294 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8293 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8292 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8291 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8292))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_8294))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8291) .cse4 v_ArrVal_8293) .cse5 v_ArrVal_8295) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_8296) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-27 23:29:07,911 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_8296 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8295 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8294 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8293 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8292 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8291 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8292))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_8294))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8291) .cse1 v_ArrVal_8293) .cse2 v_ArrVal_8295) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_8296) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_8295 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8294 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8293 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8292 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8291 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8292))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8291) .cse7 v_ArrVal_8293) (select (select (store .cse8 .cse7 v_ArrVal_8294) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8295))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse6 (_ bv20 32)) (bvadd .cse6 (_ bv24 32)))))))) is different from false [2024-11-27 23:29:13,995 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8295 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8294 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8293 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8292 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8291 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8388 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8387 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8388))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_8292))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8387) .cse1 v_ArrVal_8291) .cse2 v_ArrVal_8293) (select (select (store .cse3 .cse2 v_ArrVal_8294) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_8295))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8296 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8295 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8294 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8293 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8292 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8291 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8388 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8387 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8388))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_8292))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_8294))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8387) .cse6 v_ArrVal_8291) .cse7 v_ArrVal_8293) .cse8 v_ArrVal_8295) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_8296) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-11-27 23:29:14,025 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:14,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027885180] [2024-11-27 23:29:14,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027885180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:29:14,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [839068456] [2024-11-27 23:29:14,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:14,026 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 23:29:14,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 23:29:14,028 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 23:29:14,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f46107-a5f6-4ce5-b343-6b9d632fc485/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2024-11-27 23:29:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:31,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-27 23:29:31,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:31,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-27 23:29:33,022 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:29:33,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:29:33,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:29:33,195 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 [2024-11-27 23:29:33,252 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 [2024-11-27 23:29:33,699 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 [2024-11-27 23:29:33,732 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 [2024-11-27 23:29:39,388 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:29:39,389 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 [2024-11-27 23:29:39,445 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 [2024-11-27 23:29:40,008 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:29:40,009 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 [2024-11-27 23:29:40,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-27 23:29:40,490 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:29:40,490 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 [2024-11-27 23:29:40,549 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 [2024-11-27 23:29:40,973 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 23:29:40,973 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 [2024-11-27 23:29:41,030 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 [2024-11-27 23:29:41,227 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 [2024-11-27 23:29:41,282 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 [2024-11-27 23:29:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-27 23:29:41,284 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:29:41,560 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8893 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8893) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8893 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8893) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-27 23:29:41,669 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8893 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8893) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_8893 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8893) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse2) (bvadd (_ bv24 32) .cse2))))))) is different from false [2024-11-27 23:29:41,846 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8893 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8891))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8890) .cse0 v_ArrVal_8893) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8893 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8890) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8893) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse3) (bvadd (_ bv24 32) .cse3)))))) is different from false [2024-11-27 23:29:41,976 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8893 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8891))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8890) .cse1 v_ArrVal_8893) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8893 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8890) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8893) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse4) (bvadd (_ bv24 32) .cse4))))))) is different from false [2024-11-27 23:29:42,373 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8893 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8889))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8891))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8888) .cse0 v_ArrVal_8890) .cse1 v_ArrVal_8893) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8893 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8889))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8888) .cse6 v_ArrVal_8890) (select (select (store .cse7 .cse6 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8893))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv20 32)) (bvadd .cse5 (_ bv24 32))))))) is different from false [2024-11-27 23:29:42,769 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8893 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8889))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_8891))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8888) .cse1 v_ArrVal_8890) .cse2 v_ArrVal_8893) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8893 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8889))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8888) .cse7 v_ArrVal_8890) (select (select (store .cse8 .cse7 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8893))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse6 (_ bv20 32)) (bvadd .cse6 (_ bv24 32)))))))) is different from false [2024-11-27 23:29:51,375 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8985 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8984 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8893 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8985))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_8889))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8984) .cse1 v_ArrVal_8888) .cse2 v_ArrVal_8890) (select (select (store .cse3 .cse2 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_8893))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8985 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8984 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8893 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8985))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_8889))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_8891))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8984) .cse6 v_ArrVal_8888) .cse7 v_ArrVal_8890) .cse8 v_ArrVal_8893) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-11-27 23:29:51,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [839068456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:29:51,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:29:51,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 12 [2024-11-27 23:29:51,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104238446] [2024-11-27 23:29:51,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:29:51,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 23:29:51,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:51,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 23:29:51,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=221, Unknown=27, NotChecked=492, Total=812 [2024-11-27 23:29:51,417 INFO L87 Difference]: Start difference. First operand 5485 states and 7938 transitions. Second operand has 13 states, 11 states have (on average 10.727272727272727) internal successors, (118), 13 states have internal predecessors, (118), 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)