./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd --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 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:14:05,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:14:05,382 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 16:14:05,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:14:05,391 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:14:05,437 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:14:05,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:14:05,440 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:14:05,441 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:14:05,442 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:14:05,443 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:14:05,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:14:05,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:14:05,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:14:05,444 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:14:05,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:14:05,445 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:14:05,446 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:14:05,446 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:14:05,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:14:05,446 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 16:14:05,446 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 16:14:05,446 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 16:14:05,447 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:14:05,447 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 16:14:05,447 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:14:05,447 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 16:14:05,447 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:14:05,447 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:14:05,448 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:14:05,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:14:05,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:14:05,448 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:14:05,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:14:05,448 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:14:05,448 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:14:05,448 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:14:05,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:14:05,449 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:14:05,449 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:14:05,449 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:14:05,449 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:14:05,450 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_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd 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 -> 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e [2024-11-13 16:14:05,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:14:05,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:14:05,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:14:05,911 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:14:05,912 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:14:05,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i Unable to find full path for "g++" [2024-11-13 16:14:08,370 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:14:08,973 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:14:08,975 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2024-11-13 16:14:09,011 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/data/d31a0100c/48df3964b62145f6b2b106cedbf2d0ee/FLAG391dd0ac8 [2024-11-13 16:14:09,030 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/data/d31a0100c/48df3964b62145f6b2b106cedbf2d0ee [2024-11-13 16:14:09,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:14:09,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:14:09,037 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:14:09,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:14:09,044 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:14:09,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:14:09" (1/1) ... [2024-11-13 16:14:09,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63674613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:14:09, skipping insertion in model container [2024-11-13 16:14:09,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:14:09" (1/1) ... [2024-11-13 16:14:09,141 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:14:09,882 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:09,930 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:09,940 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:09,950 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:09,960 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,006 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,010 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,014 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,027 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,073 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,073 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,077 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,078 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,114 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,115 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,121 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,121 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,148 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,148 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,152 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,152 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,176 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,177 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,180 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,180 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,182 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,185 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,187 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,188 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,189 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,196 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,197 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,198 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,199 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,204 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:10,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:14:10,236 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) [2024-11-13 16:14:10,236 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74e9434a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:14:10, skipping insertion in model container [2024-11-13 16:14:10,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:14:10,237 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-13 16:14:10,240 INFO L158 Benchmark]: Toolchain (without parser) took 1203.29ms. Allocated memory is still 167.8MB. Free memory was 126.9MB in the beginning and 97.3MB in the end (delta: 29.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-13 16:14:10,240 INFO L158 Benchmark]: CDTParser took 1.34ms. Allocated memory is still 167.8MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:14:10,244 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1199.81ms. Allocated memory is still 167.8MB. Free memory was 126.9MB in the beginning and 97.3MB in the end (delta: 29.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-13 16:14:10,246 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34ms. Allocated memory is still 167.8MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1199.81ms. Allocated memory is still 167.8MB. Free memory was 126.9MB in the beginning and 97.3MB in the end (delta: 29.6MB). 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_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd --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 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:14:13,454 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:14:13,611 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-13 16:14:13,620 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:14:13,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:14:13,667 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:14:13,668 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:14:13,668 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:14:13,669 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:14:13,669 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:14:13,669 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:14:13,670 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:14:13,671 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:14:13,672 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:14:13,672 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:14:13,672 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:14:13,672 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:14:13,673 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:14:13,673 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:14:13,673 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:14:13,673 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 16:14:13,673 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 16:14:13,673 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 16:14:13,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:14:13,673 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 16:14:13,674 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 16:14:13,674 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:14:13,674 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 16:14:13,674 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 16:14:13,676 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:14:13,676 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:14:13,676 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:14:13,676 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:14:13,676 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:14:13,677 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:14:13,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:14:13,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:14:13,678 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:14:13,678 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 16:14:13,678 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 16:14:13,678 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:14:13,678 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:14:13,678 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:14:13,678 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:14:13,678 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_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd 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 -> 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e [2024-11-13 16:14:14,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:14:14,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:14:14,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:14:14,140 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:14:14,140 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:14:14,142 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i Unable to find full path for "g++" [2024-11-13 16:14:16,622 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:14:17,186 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:14:17,186 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2024-11-13 16:14:17,227 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/data/07552b91e/0b4d351b437c4a869d026a4fe4d46c8e/FLAG9f889606e [2024-11-13 16:14:17,711 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/data/07552b91e/0b4d351b437c4a869d026a4fe4d46c8e [2024-11-13 16:14:17,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:14:17,716 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:14:17,718 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:14:17,718 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:14:17,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:14:17,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:14:17" (1/1) ... [2024-11-13 16:14:17,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38f5eb6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:14:17, skipping insertion in model container [2024-11-13 16:14:17,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:14:17" (1/1) ... [2024-11-13 16:14:17,798 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:14:18,404 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,471 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,478 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,485 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,500 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,576 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,583 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,590 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,611 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,680 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,681 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,690 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,691 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,716 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,716 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,720 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,720 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,740 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,741 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,744 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,744 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,770 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,771 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,778 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,778 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,783 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,786 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,790 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,792 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,793 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,803 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,804 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,805 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,806 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,811 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:18,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:14:18,853 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-13 16:14:18,882 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:14:18,945 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,003 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,006 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,009 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,014 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,034 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,040 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,046 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,054 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,089 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,091 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,094 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,095 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,114 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,116 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,119 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,119 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,137 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,137 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,140 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,141 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,153 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,153 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,155 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,157 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,160 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,162 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,163 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,164 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,165 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,169 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,170 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,171 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,172 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,176 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:14:19,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:14:19,192 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:14:19,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:14:19,457 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:14:19,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:14:19 WrapperNode [2024-11-13 16:14:19,459 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:14:19,460 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:14:19,460 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:14:19,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:14:19,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:14:19" (1/1) ... [2024-11-13 16:14:19,583 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:14:19" (1/1) ... [2024-11-13 16:14:19,740 INFO L138 Inliner]: procedures = 180, calls = 606, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2496 [2024-11-13 16:14:19,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:14:19,742 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:14:19,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:14:19,742 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:14:19,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:14:19" (1/1) ... [2024-11-13 16:14:19,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:14:19" (1/1) ... [2024-11-13 16:14:19,771 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:14:19" (1/1) ... [2024-11-13 16:14:20,112 INFO L175 MemorySlicer]: Split 574 memory accesses to 3 slices as follows [2, 106, 466]. 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, 4, 98]. [2024-11-13 16:14:20,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:14:19" (1/1) ... [2024-11-13 16:14:20,116 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:14:19" (1/1) ... [2024-11-13 16:14:20,236 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:14:19" (1/1) ... [2024-11-13 16:14:20,303 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:14:19" (1/1) ... [2024-11-13 16:14:20,329 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:14:19" (1/1) ... [2024-11-13 16:14:20,354 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:14:19" (1/1) ... [2024-11-13 16:14:20,391 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:14:20,398 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:14:20,398 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:14:20,398 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:14:20,400 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:14:19" (1/1) ... [2024-11-13 16:14:20,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:14:20,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:14:20,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:14:20,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:14:20,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-13 16:14:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-13 16:14:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-13 16:14:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-13 16:14:20,503 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-13 16:14:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 16:14:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 16:14:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-13 16:14:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 16:14:20,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 16:14:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-13 16:14:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-13 16:14:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-13 16:14:20,507 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-13 16:14:20,507 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-13 16:14:20,507 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-13 16:14:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 16:14:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:14:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 16:14:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 16:14:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 16:14:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 16:14:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 16:14:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 16:14:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 16:14:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 16:14:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 16:14:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-13 16:14:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-13 16:14:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 16:14:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 16:14:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-13 16:14:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:14:20,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:14:20,970 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:14:20,973 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:14:21,067 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 16:14:21,112 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 16:14:21,149 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 16:14:34,085 INFO L? ?]: Removed 2433 outVars from TransFormulas that were not future-live. [2024-11-13 16:14:34,085 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:14:34,168 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:14:34,168 INFO L316 CfgBuilder]: Removed 168 assume(true) statements. [2024-11-13 16:14:34,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:14:34 BoogieIcfgContainer [2024-11-13 16:14:34,169 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:14:34,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:14:34,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:14:34,178 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:14:34,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:14:17" (1/3) ... [2024-11-13 16:14:34,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cb0177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:14:34, skipping insertion in model container [2024-11-13 16:14:34,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:14:19" (2/3) ... [2024-11-13 16:14:34,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cb0177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:14:34, skipping insertion in model container [2024-11-13 16:14:34,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:14:34" (3/3) ... [2024-11-13 16:14:34,183 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-3.i [2024-11-13 16:14:34,205 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:14:34,207 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test10-3.i that has 6 procedures, 2466 locations, 1 initial locations, 93 loop locations, and 1189 error locations. [2024-11-13 16:14:34,332 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:14:34,354 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;@3a7e8749, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:14:34,355 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1189 error locations. [2024-11-13 16:14:34,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 2456 states, 1255 states have (on average 2.201593625498008) internal successors, (2763), 2442 states have internal predecessors, (2763), 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) [2024-11-13 16:14:34,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 16:14:34,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:14:34,376 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 16:14:34,377 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)] === [2024-11-13 16:14:34,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:14:34,384 INFO L85 PathProgramCache]: Analyzing trace with hash 84472, now seen corresponding path program 1 times [2024-11-13 16:14:34,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:14:34,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646989515] [2024-11-13 16:14:34,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:14:34,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:14:34,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:14:34,399 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:14:34,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:14:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:34,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:14:34,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:14:34,791 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 [2024-11-13 16:14:34,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:14:34,817 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:14:34,818 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:14:34,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646989515] [2024-11-13 16:14:34,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646989515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:14:34,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:14:34,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:14:34,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077920041] [2024-11-13 16:14:34,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:14:34,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:14:34,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:14:34,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:14:34,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:14:34,871 INFO L87 Difference]: Start difference. First operand has 2456 states, 1255 states have (on average 2.201593625498008) internal successors, (2763), 2442 states have internal predecessors, (2763), 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) [2024-11-13 16:14:41,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:14:41,469 INFO L93 Difference]: Finished difference Result 3291 states and 3491 transitions. [2024-11-13 16:14:41,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:14:41,471 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 [2024-11-13 16:14:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:14:41,502 INFO L225 Difference]: With dead ends: 3291 [2024-11-13 16:14:41,503 INFO L226 Difference]: Without dead ends: 3289 [2024-11-13 16:14:41,505 INFO L431 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 [2024-11-13 16:14:41,509 INFO L432 NwaCegarLoop]: 1675 mSDtfsCounter, 2320 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2330 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:14:41,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2330 Valid, 2245 Invalid, 1690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-13 16:14:41,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2024-11-13 16:14:41,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2600. [2024-11-13 16:14:41,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 1427 states have (on average 2.0385423966363) internal successors, (2909), 2584 states have internal predecessors, (2909), 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) [2024-11-13 16:14:41,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 2941 transitions. [2024-11-13 16:14:41,735 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 2941 transitions. Word has length 3 [2024-11-13 16:14:41,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:14:41,737 INFO L471 AbstractCegarLoop]: Abstraction has 2600 states and 2941 transitions. [2024-11-13 16:14:41,737 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) [2024-11-13 16:14:41,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 2941 transitions. [2024-11-13 16:14:41,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 16:14:41,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:14:41,738 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 16:14:41,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:14:41,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:14:41,943 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)] === [2024-11-13 16:14:41,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:14:41,943 INFO L85 PathProgramCache]: Analyzing trace with hash 84473, now seen corresponding path program 1 times [2024-11-13 16:14:41,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:14:41,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405900197] [2024-11-13 16:14:41,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:14:41,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:14:41,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:14:41,947 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:14:41,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:14:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:42,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:14:42,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:14:42,269 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 [2024-11-13 16:14:42,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:14:42,293 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:14:42,293 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:14:42,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405900197] [2024-11-13 16:14:42,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405900197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:14:42,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:14:42,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:14:42,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670422478] [2024-11-13 16:14:42,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:14:42,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:14:42,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:14:42,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:14:42,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:14:42,298 INFO L87 Difference]: Start difference. First operand 2600 states and 2941 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) [2024-11-13 16:14:50,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:14:50,456 INFO L93 Difference]: Finished difference Result 3401 states and 3822 transitions. [2024-11-13 16:14:50,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:14:50,457 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 [2024-11-13 16:14:50,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:14:50,472 INFO L225 Difference]: With dead ends: 3401 [2024-11-13 16:14:50,472 INFO L226 Difference]: Without dead ends: 3401 [2024-11-13 16:14:50,472 INFO L431 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 [2024-11-13 16:14:50,473 INFO L432 NwaCegarLoop]: 2226 mSDtfsCounter, 875 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 3629 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:14:50,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 3629 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-11-13 16:14:50,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2024-11-13 16:14:50,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 3073. [2024-11-13 16:14:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3073 states, 1898 states have (on average 1.993677555321391) internal successors, (3784), 3054 states have internal predecessors, (3784), 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) [2024-11-13 16:14:50,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 3822 transitions. [2024-11-13 16:14:50,577 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 3822 transitions. Word has length 3 [2024-11-13 16:14:50,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:14:50,578 INFO L471 AbstractCegarLoop]: Abstraction has 3073 states and 3822 transitions. [2024-11-13 16:14:50,578 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) [2024-11-13 16:14:50,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 3822 transitions. [2024-11-13 16:14:50,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 16:14:50,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:14:50,579 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:14:50,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:14:50,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:14:50,783 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)] === [2024-11-13 16:14:50,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:14:50,784 INFO L85 PathProgramCache]: Analyzing trace with hash 703308354, now seen corresponding path program 1 times [2024-11-13 16:14:50,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:14:50,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1053292093] [2024-11-13 16:14:50,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:14:50,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:14:50,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:14:50,792 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:14:50,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:14:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:51,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 16:14:51,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:14:51,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 16:14:51,211 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-13 16:14:51,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-13 16:14:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:14:51,325 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:14:51,325 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:14:51,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053292093] [2024-11-13 16:14:51,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053292093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:14:51,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:14:51,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:14:51,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937864527] [2024-11-13 16:14:51,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:14:51,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:14:51,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:14:51,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:14:51,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:14:51,327 INFO L87 Difference]: Start difference. First operand 3073 states and 3822 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2024-11-13 16:15:04,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:04,724 INFO L93 Difference]: Finished difference Result 4759 states and 5293 transitions. [2024-11-13 16:15:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:15:04,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2024-11-13 16:15:04,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:04,743 INFO L225 Difference]: With dead ends: 4759 [2024-11-13 16:15:04,743 INFO L226 Difference]: Without dead ends: 4759 [2024-11-13 16:15:04,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:15:04,745 INFO L432 NwaCegarLoop]: 2494 mSDtfsCounter, 2331 mSDsluCounter, 2800 mSDsCounter, 0 mSdLazyCounter, 3320 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 5294 SdHoareTripleChecker+Invalid, 3337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:04,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 5294 Invalid, 3337 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 3320 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2024-11-13 16:15:04,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4759 states. [2024-11-13 16:15:04,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4759 to 3359. [2024-11-13 16:15:04,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 2184 states have (on average 1.9885531135531136) internal successors, (4343), 3340 states have internal predecessors, (4343), 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) [2024-11-13 16:15:04,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 4381 transitions. [2024-11-13 16:15:04,844 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 4381 transitions. Word has length 7 [2024-11-13 16:15:04,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:04,848 INFO L471 AbstractCegarLoop]: Abstraction has 3359 states and 4381 transitions. [2024-11-13 16:15:04,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2024-11-13 16:15:04,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 4381 transitions. [2024-11-13 16:15:04,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 16:15:04,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:04,849 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:15:04,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 16:15:05,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:05,050 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)] === [2024-11-13 16:15:05,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:05,054 INFO L85 PathProgramCache]: Analyzing trace with hash 327722514, now seen corresponding path program 1 times [2024-11-13 16:15:05,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:15:05,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858812422] [2024-11-13 16:15:05,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:05,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:05,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:15:05,058 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:15:05,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:15:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:15:05,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:15:05,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:15:05,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 16:15:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:05,402 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:15:05,403 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:15:05,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858812422] [2024-11-13 16:15:05,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858812422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:15:05,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:15:05,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:15:05,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990293254] [2024-11-13 16:15:05,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:15:05,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:15:05,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:15:05,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:15:05,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:15:05,405 INFO L87 Difference]: Start difference. First operand 3359 states and 4381 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2024-11-13 16:15:11,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:11,057 INFO L93 Difference]: Finished difference Result 4071 states and 5132 transitions. [2024-11-13 16:15:11,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:15:11,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2024-11-13 16:15:11,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:11,072 INFO L225 Difference]: With dead ends: 4071 [2024-11-13 16:15:11,072 INFO L226 Difference]: Without dead ends: 4071 [2024-11-13 16:15:11,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:15:11,073 INFO L432 NwaCegarLoop]: 2412 mSDtfsCounter, 1920 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1930 SdHoareTripleChecker+Valid, 3180 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:11,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1930 Valid, 3180 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-13 16:15:11,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2024-11-13 16:15:11,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 3267. [2024-11-13 16:15:11,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3267 states, 2184 states have (on average 1.9271978021978022) internal successors, (4209), 3248 states have internal predecessors, (4209), 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) [2024-11-13 16:15:11,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3267 states to 3267 states and 4247 transitions. [2024-11-13 16:15:11,165 INFO L78 Accepts]: Start accepts. Automaton has 3267 states and 4247 transitions. Word has length 8 [2024-11-13 16:15:11,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:11,165 INFO L471 AbstractCegarLoop]: Abstraction has 3267 states and 4247 transitions. [2024-11-13 16:15:11,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2024-11-13 16:15:11,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3267 states and 4247 transitions. [2024-11-13 16:15:11,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 16:15:11,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:11,166 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:15:11,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 16:15:11,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:11,367 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)] === [2024-11-13 16:15:11,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:11,368 INFO L85 PathProgramCache]: Analyzing trace with hash 327722515, now seen corresponding path program 1 times [2024-11-13 16:15:11,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:15:11,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [160466567] [2024-11-13 16:15:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:11,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:11,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:15:11,373 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:15:11,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:15:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:15:11,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:15:11,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:15:11,668 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 [2024-11-13 16:15:11,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:11,711 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:15:11,711 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:15:11,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160466567] [2024-11-13 16:15:11,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160466567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:15:11,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:15:11,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:15:11,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154094899] [2024-11-13 16:15:11,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:15:11,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:15:11,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:15:11,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:15:11,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:15:11,713 INFO L87 Difference]: Start difference. First operand 3267 states and 4247 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2024-11-13 16:15:19,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:19,915 INFO L93 Difference]: Finished difference Result 4879 states and 6347 transitions. [2024-11-13 16:15:19,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:15:19,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2024-11-13 16:15:19,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:19,929 INFO L225 Difference]: With dead ends: 4879 [2024-11-13 16:15:19,929 INFO L226 Difference]: Without dead ends: 4879 [2024-11-13 16:15:19,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:15:19,930 INFO L432 NwaCegarLoop]: 2764 mSDtfsCounter, 1423 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 3967 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:19,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1427 Valid, 3967 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-13 16:15:19,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4879 states. [2024-11-13 16:15:20,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4879 to 3434. [2024-11-13 16:15:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 2361 states have (on average 1.9097839898348157) internal successors, (4509), 3415 states have internal predecessors, (4509), 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) [2024-11-13 16:15:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 4547 transitions. [2024-11-13 16:15:20,026 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 4547 transitions. Word has length 8 [2024-11-13 16:15:20,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:20,026 INFO L471 AbstractCegarLoop]: Abstraction has 3434 states and 4547 transitions. [2024-11-13 16:15:20,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2024-11-13 16:15:20,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 4547 transitions. [2024-11-13 16:15:20,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 16:15:20,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:20,027 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:15:20,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 16:15:20,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:20,231 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)] === [2024-11-13 16:15:20,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:20,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1292249561, now seen corresponding path program 1 times [2024-11-13 16:15:20,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:15:20,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020067786] [2024-11-13 16:15:20,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:20,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:20,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:15:20,237 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:15:20,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 16:15:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:15:20,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:15:20,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:15:20,512 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 [2024-11-13 16:15:20,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:20,569 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:15:20,569 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:15:20,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020067786] [2024-11-13 16:15:20,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020067786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:15:20,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:15:20,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:15:20,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139824273] [2024-11-13 16:15:20,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:15:20,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:15:20,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:15:20,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:15:20,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:15:20,571 INFO L87 Difference]: Start difference. First operand 3434 states and 4547 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) [2024-11-13 16:15:28,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:28,131 INFO L93 Difference]: Finished difference Result 4071 states and 5042 transitions. [2024-11-13 16:15:28,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:15:28,132 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 [2024-11-13 16:15:28,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:28,143 INFO L225 Difference]: With dead ends: 4071 [2024-11-13 16:15:28,144 INFO L226 Difference]: Without dead ends: 4071 [2024-11-13 16:15:28,144 INFO L431 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 [2024-11-13 16:15:28,145 INFO L432 NwaCegarLoop]: 1623 mSDtfsCounter, 2283 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 2718 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 3571 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:28,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2293 Valid, 3571 Invalid, 2749 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 2718 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-13 16:15:28,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2024-11-13 16:15:28,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 3411. [2024-11-13 16:15:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3411 states, 2361 states have (on average 1.890300720033884) internal successors, (4463), 3392 states have internal predecessors, (4463), 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) [2024-11-13 16:15:28,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3411 states to 3411 states and 4501 transitions. [2024-11-13 16:15:28,203 INFO L78 Accepts]: Start accepts. Automaton has 3411 states and 4501 transitions. Word has length 11 [2024-11-13 16:15:28,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:28,203 INFO L471 AbstractCegarLoop]: Abstraction has 3411 states and 4501 transitions. [2024-11-13 16:15:28,203 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) [2024-11-13 16:15:28,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3411 states and 4501 transitions. [2024-11-13 16:15:28,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 16:15:28,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:28,204 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:15:28,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 16:15:28,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:28,409 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)] === [2024-11-13 16:15:28,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:28,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1292249560, now seen corresponding path program 1 times [2024-11-13 16:15:28,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:15:28,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354020048] [2024-11-13 16:15:28,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:28,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:28,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:15:28,414 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:15:28,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:15:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:15:28,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 16:15:28,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:15:28,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:28,672 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:15:28,672 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:15:28,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354020048] [2024-11-13 16:15:28,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354020048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:15:28,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:15:28,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:15:28,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389900541] [2024-11-13 16:15:28,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:15:28,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:15:28,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:15:28,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:15:28,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:15:28,674 INFO L87 Difference]: Start difference. First operand 3411 states and 4501 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2024-11-13 16:15:28,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:28,734 INFO L93 Difference]: Finished difference Result 3363 states and 4439 transitions. [2024-11-13 16:15:28,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:15:28,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2024-11-13 16:15:28,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:28,745 INFO L225 Difference]: With dead ends: 3363 [2024-11-13 16:15:28,746 INFO L226 Difference]: Without dead ends: 3363 [2024-11-13 16:15:28,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:15:28,747 INFO L432 NwaCegarLoop]: 2407 mSDtfsCounter, 61 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 4761 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:28,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 4761 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:15:28,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2024-11-13 16:15:28,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 3363. [2024-11-13 16:15:28,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 2325 states have (on average 1.8929032258064515) internal successors, (4401), 3344 states have internal predecessors, (4401), 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) [2024-11-13 16:15:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4439 transitions. [2024-11-13 16:15:28,822 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4439 transitions. Word has length 11 [2024-11-13 16:15:28,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:28,822 INFO L471 AbstractCegarLoop]: Abstraction has 3363 states and 4439 transitions. [2024-11-13 16:15:28,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2024-11-13 16:15:28,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4439 transitions. [2024-11-13 16:15:28,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 16:15:28,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:28,823 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:15:28,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 16:15:29,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:29,028 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)] === [2024-11-13 16:15:29,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:29,028 INFO L85 PathProgramCache]: Analyzing trace with hash -606227775, now seen corresponding path program 1 times [2024-11-13 16:15:29,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:15:29,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291759317] [2024-11-13 16:15:29,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:29,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:29,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:15:29,031 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:15:29,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 16:15:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:15:29,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:15:29,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:15:29,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:29,300 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:15:29,300 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:15:29,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291759317] [2024-11-13 16:15:29,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291759317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:15:29,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:15:29,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:15:29,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569896767] [2024-11-13 16:15:29,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:15:29,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:15:29,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:15:29,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:15:29,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:15:29,305 INFO L87 Difference]: Start difference. First operand 3363 states and 4439 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) [2024-11-13 16:15:29,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:29,444 INFO L93 Difference]: Finished difference Result 3340 states and 4395 transitions. [2024-11-13 16:15:29,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:15:29,444 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 [2024-11-13 16:15:29,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:29,462 INFO L225 Difference]: With dead ends: 3340 [2024-11-13 16:15:29,462 INFO L226 Difference]: Without dead ends: 3340 [2024-11-13 16:15:29,462 INFO L431 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 [2024-11-13 16:15:29,464 INFO L432 NwaCegarLoop]: 2369 mSDtfsCounter, 45 mSDsluCounter, 4715 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 7084 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:29,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 7084 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:15:29,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3340 states. [2024-11-13 16:15:29,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3340 to 3340. [2024-11-13 16:15:29,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3340 states, 2309 states have (on average 1.8869640537029018) internal successors, (4357), 3321 states have internal predecessors, (4357), 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) [2024-11-13 16:15:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 4395 transitions. [2024-11-13 16:15:29,547 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 4395 transitions. Word has length 13 [2024-11-13 16:15:29,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:29,547 INFO L471 AbstractCegarLoop]: Abstraction has 3340 states and 4395 transitions. [2024-11-13 16:15:29,547 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) [2024-11-13 16:15:29,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 4395 transitions. [2024-11-13 16:15:29,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 16:15:29,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:29,549 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:15:29,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 16:15:29,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:29,750 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:15:29,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:29,750 INFO L85 PathProgramCache]: Analyzing trace with hash -286362881, now seen corresponding path program 1 times [2024-11-13 16:15:29,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:15:29,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229883352] [2024-11-13 16:15:29,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:29,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:29,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:15:29,753 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:15:29,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 16:15:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:15:30,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:15:30,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:15:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:30,099 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:15:30,099 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:15:30,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229883352] [2024-11-13 16:15:30,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229883352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:15:30,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:15:30,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:15:30,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610812086] [2024-11-13 16:15:30,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:15:30,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:15:30,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:15:30,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:15:30,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:15:30,101 INFO L87 Difference]: Start difference. First operand 3340 states and 4395 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:15:37,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:37,472 INFO L93 Difference]: Finished difference Result 4061 states and 5166 transitions. [2024-11-13 16:15:37,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:15:37,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 16:15:37,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:37,482 INFO L225 Difference]: With dead ends: 4061 [2024-11-13 16:15:37,482 INFO L226 Difference]: Without dead ends: 4061 [2024-11-13 16:15:37,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:15:37,483 INFO L432 NwaCegarLoop]: 2266 mSDtfsCounter, 1885 mSDsluCounter, 2417 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:37,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1895 Valid, 4683 Invalid, 2951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2919 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-13 16:15:37,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2024-11-13 16:15:37,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 3317. [2024-11-13 16:15:37,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3317 states, 2309 states have (on average 1.867042009527934) internal successors, (4311), 3298 states have internal predecessors, (4311), 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) [2024-11-13 16:15:37,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 4349 transitions. [2024-11-13 16:15:37,558 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 4349 transitions. Word has length 20 [2024-11-13 16:15:37,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:37,558 INFO L471 AbstractCegarLoop]: Abstraction has 3317 states and 4349 transitions. [2024-11-13 16:15:37,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:15:37,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 4349 transitions. [2024-11-13 16:15:37,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 16:15:37,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:37,560 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:15:37,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 16:15:37,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:37,760 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:15:37,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:37,761 INFO L85 PathProgramCache]: Analyzing trace with hash -286362880, now seen corresponding path program 1 times [2024-11-13 16:15:37,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:15:37,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236928458] [2024-11-13 16:15:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:37,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:37,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:15:37,765 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:15:37,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 16:15:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:15:38,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 16:15:38,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:15:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:38,083 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:15:38,083 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:15:38,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236928458] [2024-11-13 16:15:38,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236928458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:15:38,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:15:38,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:15:38,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929360901] [2024-11-13 16:15:38,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:15:38,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:15:38,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:15:38,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:15:38,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:15:38,085 INFO L87 Difference]: Start difference. First operand 3317 states and 4349 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:15:38,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:38,142 INFO L93 Difference]: Finished difference Result 3269 states and 4287 transitions. [2024-11-13 16:15:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:15:38,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 16:15:38,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:38,152 INFO L225 Difference]: With dead ends: 3269 [2024-11-13 16:15:38,152 INFO L226 Difference]: Without dead ends: 3269 [2024-11-13 16:15:38,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:15:38,153 INFO L432 NwaCegarLoop]: 2325 mSDtfsCounter, 61 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 4597 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:38,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 4597 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:15:38,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2024-11-13 16:15:38,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3269. [2024-11-13 16:15:38,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 2273 states have (on average 1.8693356797184337) internal successors, (4249), 3250 states have internal predecessors, (4249), 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) [2024-11-13 16:15:38,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 4287 transitions. [2024-11-13 16:15:38,202 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 4287 transitions. Word has length 20 [2024-11-13 16:15:38,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:38,203 INFO L471 AbstractCegarLoop]: Abstraction has 3269 states and 4287 transitions. [2024-11-13 16:15:38,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:15:38,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 4287 transitions. [2024-11-13 16:15:38,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 16:15:38,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:38,204 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:15:38,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 16:15:38,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:38,405 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr324REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:15:38,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:38,405 INFO L85 PathProgramCache]: Analyzing trace with hash -910229057, now seen corresponding path program 1 times [2024-11-13 16:15:38,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:15:38,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672543484] [2024-11-13 16:15:38,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:38,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:38,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:15:38,408 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:15:38,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 16:15:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:15:38,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:15:38,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:15:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:38,761 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:15:38,761 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:15:38,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672543484] [2024-11-13 16:15:38,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672543484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:15:38,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:15:38,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:15:38,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257993986] [2024-11-13 16:15:38,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:15:38,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:15:38,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:15:38,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:15:38,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:15:38,763 INFO L87 Difference]: Start difference. First operand 3269 states and 4287 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:15:45,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:45,577 INFO L93 Difference]: Finished difference Result 3998 states and 5020 transitions. [2024-11-13 16:15:45,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:15:45,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 16:15:45,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:45,587 INFO L225 Difference]: With dead ends: 3998 [2024-11-13 16:15:45,588 INFO L226 Difference]: Without dead ends: 3998 [2024-11-13 16:15:45,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:15:45,589 INFO L432 NwaCegarLoop]: 2247 mSDtfsCounter, 1831 mSDsluCounter, 2398 mSDsCounter, 0 mSdLazyCounter, 2849 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 4645 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:45,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1841 Valid, 4645 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2849 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-13 16:15:45,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2024-11-13 16:15:45,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3246. [2024-11-13 16:15:45,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 2273 states have (on average 1.8288605367355917) internal successors, (4157), 3227 states have internal predecessors, (4157), 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) [2024-11-13 16:15:45,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 4195 transitions. [2024-11-13 16:15:45,643 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 4195 transitions. Word has length 20 [2024-11-13 16:15:45,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:45,644 INFO L471 AbstractCegarLoop]: Abstraction has 3246 states and 4195 transitions. [2024-11-13 16:15:45,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:15:45,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 4195 transitions. [2024-11-13 16:15:45,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 16:15:45,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:45,646 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:15:45,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 16:15:45,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:45,847 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr325REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:15:45,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:45,848 INFO L85 PathProgramCache]: Analyzing trace with hash -910229056, now seen corresponding path program 1 times [2024-11-13 16:15:45,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:15:45,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200614361] [2024-11-13 16:15:45,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:45,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:45,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:15:45,851 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:15:45,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 16:15:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:15:46,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 16:15:46,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:15:46,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:46,202 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:15:46,202 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:15:46,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200614361] [2024-11-13 16:15:46,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200614361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:15:46,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:15:46,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:15:46,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411266621] [2024-11-13 16:15:46,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:15:46,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:15:46,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:15:46,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:15:46,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:15:46,204 INFO L87 Difference]: Start difference. First operand 3246 states and 4195 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:15:46,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:46,261 INFO L93 Difference]: Finished difference Result 3162 states and 4071 transitions. [2024-11-13 16:15:46,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:15:46,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 16:15:46,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:46,274 INFO L225 Difference]: With dead ends: 3162 [2024-11-13 16:15:46,275 INFO L226 Difference]: Without dead ends: 3162 [2024-11-13 16:15:46,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:15:46,276 INFO L432 NwaCegarLoop]: 2271 mSDtfsCounter, 61 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 4489 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:46,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 4489 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:15:46,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2024-11-13 16:15:46,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 3162. [2024-11-13 16:15:46,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3162 states, 2201 states have (on average 1.8323489323034985) internal successors, (4033), 3143 states have internal predecessors, (4033), 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) [2024-11-13 16:15:46,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3162 states to 3162 states and 4071 transitions. [2024-11-13 16:15:46,321 INFO L78 Accepts]: Start accepts. Automaton has 3162 states and 4071 transitions. Word has length 20 [2024-11-13 16:15:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:46,321 INFO L471 AbstractCegarLoop]: Abstraction has 3162 states and 4071 transitions. [2024-11-13 16:15:46,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:15:46,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3162 states and 4071 transitions. [2024-11-13 16:15:46,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 16:15:46,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:46,324 INFO L215 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] [2024-11-13 16:15:46,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 16:15:46,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:46,525 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:15:46,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:46,525 INFO L85 PathProgramCache]: Analyzing trace with hash -316824679, now seen corresponding path program 1 times [2024-11-13 16:15:46,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:15:46,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414700942] [2024-11-13 16:15:46,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:46,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:46,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:15:46,528 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:15:46,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 16:15:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:15:46,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:15:46,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:15:46,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:46,845 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:15:46,845 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:15:46,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414700942] [2024-11-13 16:15:46,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414700942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:15:46,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:15:46,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:15:46,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569735563] [2024-11-13 16:15:46,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:15:46,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:15:46,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:15:46,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:15:46,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:15:46,848 INFO L87 Difference]: Start difference. First operand 3162 states and 4071 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-13 16:15:46,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:46,985 INFO L93 Difference]: Finished difference Result 3139 states and 4027 transitions. [2024-11-13 16:15:46,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:15:46,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2024-11-13 16:15:46,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:46,994 INFO L225 Difference]: With dead ends: 3139 [2024-11-13 16:15:46,995 INFO L226 Difference]: Without dead ends: 3139 [2024-11-13 16:15:46,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:15:46,996 INFO L432 NwaCegarLoop]: 2233 mSDtfsCounter, 45 mSDsluCounter, 4443 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6676 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:46,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6676 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:15:47,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2024-11-13 16:15:47,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3139. [2024-11-13 16:15:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 2185 states have (on average 1.825629290617849) internal successors, (3989), 3120 states have internal predecessors, (3989), 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) [2024-11-13 16:15:47,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4027 transitions. [2024-11-13 16:15:47,041 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4027 transitions. Word has length 22 [2024-11-13 16:15:47,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:47,041 INFO L471 AbstractCegarLoop]: Abstraction has 3139 states and 4027 transitions. [2024-11-13 16:15:47,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-13 16:15:47,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4027 transitions. [2024-11-13 16:15:47,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 16:15:47,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:47,042 INFO L215 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] [2024-11-13 16:15:47,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 16:15:47,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:47,244 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr349REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:15:47,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:47,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1443228825, now seen corresponding path program 1 times [2024-11-13 16:15:47,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:15:47,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951664395] [2024-11-13 16:15:47,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:47,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:47,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:15:47,248 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:15:47,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 16:15:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:15:47,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:15:47,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:15:47,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:47,550 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:15:47,550 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:15:47,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951664395] [2024-11-13 16:15:47,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951664395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:15:47,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:15:47,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:15:47,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954914579] [2024-11-13 16:15:47,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:15:47,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:15:47,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:15:47,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:15:47,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:15:47,552 INFO L87 Difference]: Start difference. First operand 3139 states and 4027 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-13 16:15:47,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:47,661 INFO L93 Difference]: Finished difference Result 3100 states and 3939 transitions. [2024-11-13 16:15:47,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:15:47,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2024-11-13 16:15:47,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:47,671 INFO L225 Difference]: With dead ends: 3100 [2024-11-13 16:15:47,671 INFO L226 Difference]: Without dead ends: 3100 [2024-11-13 16:15:47,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:15:47,672 INFO L432 NwaCegarLoop]: 2205 mSDtfsCounter, 45 mSDsluCounter, 4387 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6592 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:47,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6592 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:15:47,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2024-11-13 16:15:47,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 3100. [2024-11-13 16:15:47,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 2153 states have (on average 1.8118903855085926) internal successors, (3901), 3081 states have internal predecessors, (3901), 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) [2024-11-13 16:15:47,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 3939 transitions. [2024-11-13 16:15:47,721 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 3939 transitions. Word has length 22 [2024-11-13 16:15:47,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:47,721 INFO L471 AbstractCegarLoop]: Abstraction has 3100 states and 3939 transitions. [2024-11-13 16:15:47,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-13 16:15:47,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 3939 transitions. [2024-11-13 16:15:47,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 16:15:47,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:47,725 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:15:47,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 16:15:47,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:47,926 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr677REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:15:47,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:47,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1622026001, now seen corresponding path program 1 times [2024-11-13 16:15:47,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:15:47,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796226183] [2024-11-13 16:15:47,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:47,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:47,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:15:47,929 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:15:47,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 16:15:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:15:48,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:15:48,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:15:48,221 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 [2024-11-13 16:15:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:48,478 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:15:48,478 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:15:48,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796226183] [2024-11-13 16:15:48,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796226183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:15:48,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:15:48,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:15:48,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450860040] [2024-11-13 16:15:48,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:15:48,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:15:48,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:15:48,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:15:48,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:15:48,479 INFO L87 Difference]: Start difference. First operand 3100 states and 3939 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-11-13 16:15:56,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:56,662 INFO L93 Difference]: Finished difference Result 3834 states and 4745 transitions. [2024-11-13 16:15:56,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:15:56,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2024-11-13 16:15:56,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:56,669 INFO L225 Difference]: With dead ends: 3834 [2024-11-13 16:15:56,669 INFO L226 Difference]: Without dead ends: 3834 [2024-11-13 16:15:56,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:15:56,669 INFO L432 NwaCegarLoop]: 1920 mSDtfsCounter, 806 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 4276 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:56,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 4276 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-13 16:15:56,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2024-11-13 16:15:56,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 3136. [2024-11-13 16:15:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3136 states, 2189 states have (on average 1.8008222932846047) internal successors, (3942), 3117 states have internal predecessors, (3942), 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) [2024-11-13 16:15:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 3980 transitions. [2024-11-13 16:15:56,716 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 3980 transitions. Word has length 27 [2024-11-13 16:15:56,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:56,716 INFO L471 AbstractCegarLoop]: Abstraction has 3136 states and 3980 transitions. [2024-11-13 16:15:56,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-11-13 16:15:56,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 3980 transitions. [2024-11-13 16:15:56,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:15:56,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:56,718 INFO L215 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] [2024-11-13 16:15:56,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-13 16:15:56,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:56,919 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:15:56,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:56,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1897207239, now seen corresponding path program 1 times [2024-11-13 16:15:56,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:15:56,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582015273] [2024-11-13 16:15:56,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:56,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:56,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:15:56,924 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:15:56,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 16:15:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:15:57,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:15:57,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:15:57,224 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 [2024-11-13 16:15:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:57,492 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:15:57,492 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:15:57,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582015273] [2024-11-13 16:15:57,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582015273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:15:57,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:15:57,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:15:57,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361384904] [2024-11-13 16:15:57,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:15:57,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:15:57,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:15:57,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:15:57,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:15:57,494 INFO L87 Difference]: Start difference. First operand 3136 states and 3980 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-13 16:16:07,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:16:07,473 INFO L93 Difference]: Finished difference Result 4413 states and 5583 transitions. [2024-11-13 16:16:07,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:16:07,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2024-11-13 16:16:07,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:16:07,478 INFO L225 Difference]: With dead ends: 4413 [2024-11-13 16:16:07,478 INFO L226 Difference]: Without dead ends: 4413 [2024-11-13 16:16:07,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:16:07,479 INFO L432 NwaCegarLoop]: 2548 mSDtfsCounter, 1186 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 2835 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 5314 SdHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:16:07,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 5314 Invalid, 2838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2835 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2024-11-13 16:16:07,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2024-11-13 16:16:07,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 3132. [2024-11-13 16:16:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 2189 states have (on average 1.7971676564641388) internal successors, (3934), 3113 states have internal predecessors, (3934), 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) [2024-11-13 16:16:07,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 3972 transitions. [2024-11-13 16:16:07,525 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 3972 transitions. Word has length 36 [2024-11-13 16:16:07,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:16:07,525 INFO L471 AbstractCegarLoop]: Abstraction has 3132 states and 3972 transitions. [2024-11-13 16:16:07,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-13 16:16:07,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 3972 transitions. [2024-11-13 16:16:07,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:16:07,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:16:07,527 INFO L215 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] [2024-11-13 16:16:07,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-13 16:16:07,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:07,727 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr363REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:16:07,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:16:07,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1374140039, now seen corresponding path program 1 times [2024-11-13 16:16:07,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:16:07,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382291823] [2024-11-13 16:16:07,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:07,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:07,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:16:07,732 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:16:07,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 16:16:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:08,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:16:08,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:16:08,274 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 [2024-11-13 16:16:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:08,586 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:16:08,587 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:16:08,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382291823] [2024-11-13 16:16:08,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382291823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:16:08,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:16:08,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:16:08,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215206606] [2024-11-13 16:16:08,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:16:08,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:16:08,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:16:08,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:16:08,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:16:08,589 INFO L87 Difference]: Start difference. First operand 3132 states and 3972 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-13 16:16:18,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:16:18,374 INFO L93 Difference]: Finished difference Result 4409 states and 5575 transitions. [2024-11-13 16:16:18,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:16:18,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2024-11-13 16:16:18,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:16:18,378 INFO L225 Difference]: With dead ends: 4409 [2024-11-13 16:16:18,378 INFO L226 Difference]: Without dead ends: 4409 [2024-11-13 16:16:18,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:16:18,379 INFO L432 NwaCegarLoop]: 2557 mSDtfsCounter, 1182 mSDsluCounter, 2796 mSDsCounter, 0 mSdLazyCounter, 2840 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 5353 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:16:18,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 5353 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2840 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2024-11-13 16:16:18,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2024-11-13 16:16:18,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 3132. [2024-11-13 16:16:18,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 2189 states have (on average 1.7935130196436728) internal successors, (3926), 3113 states have internal predecessors, (3926), 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) [2024-11-13 16:16:18,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 3964 transitions. [2024-11-13 16:16:18,429 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 3964 transitions. Word has length 36 [2024-11-13 16:16:18,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:16:18,429 INFO L471 AbstractCegarLoop]: Abstraction has 3132 states and 3964 transitions. [2024-11-13 16:16:18,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-13 16:16:18,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 3964 transitions. [2024-11-13 16:16:18,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 16:16:18,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:16:18,431 INFO L215 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] [2024-11-13 16:16:18,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 16:16:18,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:18,632 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr684REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:16:18,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:16:18,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1632603066, now seen corresponding path program 1 times [2024-11-13 16:16:18,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:16:18,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586731681] [2024-11-13 16:16:18,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:18,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:18,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:16:18,636 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:16:18,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 16:16:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:18,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:16:18,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:16:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:19,337 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:16:19,337 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:16:19,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586731681] [2024-11-13 16:16:19,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586731681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:16:19,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:16:19,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:16:19,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505394593] [2024-11-13 16:16:19,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:16:19,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:16:19,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:16:19,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:16:19,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:16:19,342 INFO L87 Difference]: Start difference. First operand 3132 states and 3964 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) [2024-11-13 16:16:19,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:16:19,894 INFO L93 Difference]: Finished difference Result 4519 states and 5364 transitions. [2024-11-13 16:16:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:16:19,895 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 [2024-11-13 16:16:19,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:16:19,902 INFO L225 Difference]: With dead ends: 4519 [2024-11-13 16:16:19,902 INFO L226 Difference]: Without dead ends: 4519 [2024-11-13 16:16:19,903 INFO L431 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 [2024-11-13 16:16:19,903 INFO L432 NwaCegarLoop]: 2289 mSDtfsCounter, 1506 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 4410 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 [2024-11-13 16:16:19,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 4410 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:16:19,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4519 states. [2024-11-13 16:16:19,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4519 to 3685. [2024-11-13 16:16:19,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3685 states, 2738 states have (on average 1.779035792549306) internal successors, (4871), 3659 states have internal predecessors, (4871), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-13 16:16:19,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 4923 transitions. [2024-11-13 16:16:19,968 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 4923 transitions. Word has length 41 [2024-11-13 16:16:19,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:16:19,969 INFO L471 AbstractCegarLoop]: Abstraction has 3685 states and 4923 transitions. [2024-11-13 16:16:19,969 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) [2024-11-13 16:16:19,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 4923 transitions. [2024-11-13 16:16:19,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 16:16:19,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:16:19,970 INFO L215 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] [2024-11-13 16:16:19,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-13 16:16:20,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:20,174 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:16:20,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:16:20,175 INFO L85 PathProgramCache]: Analyzing trace with hash -967532700, now seen corresponding path program 1 times [2024-11-13 16:16:20,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:16:20,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486856365] [2024-11-13 16:16:20,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:20,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:20,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:16:20,178 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:16:20,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 16:16:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:20,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:16:20,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:16:20,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:20,593 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:16:20,593 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:16:20,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486856365] [2024-11-13 16:16:20,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486856365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:16:20,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:16:20,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:16:20,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213125613] [2024-11-13 16:16:20,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:16:20,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:16:20,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:16:20,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:16:20,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:16:20,596 INFO L87 Difference]: Start difference. First operand 3685 states and 4923 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) [2024-11-13 16:16:20,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:16:20,683 INFO L93 Difference]: Finished difference Result 3667 states and 4889 transitions. [2024-11-13 16:16:20,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:16:20,684 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 [2024-11-13 16:16:20,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:16:20,688 INFO L225 Difference]: With dead ends: 3667 [2024-11-13 16:16:20,688 INFO L226 Difference]: Without dead ends: 3667 [2024-11-13 16:16:20,689 INFO L431 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 [2024-11-13 16:16:20,689 INFO L432 NwaCegarLoop]: 2203 mSDtfsCounter, 27 mSDsluCounter, 4369 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6572 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 [2024-11-13 16:16:20,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6572 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:16:20,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3667 states. [2024-11-13 16:16:20,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3667 to 3667. [2024-11-13 16:16:20,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3667 states, 2720 states have (on average 1.7783088235294118) internal successors, (4837), 3641 states have internal predecessors, (4837), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-13 16:16:20,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3667 states to 3667 states and 4889 transitions. [2024-11-13 16:16:20,746 INFO L78 Accepts]: Start accepts. Automaton has 3667 states and 4889 transitions. Word has length 52 [2024-11-13 16:16:20,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:16:20,746 INFO L471 AbstractCegarLoop]: Abstraction has 3667 states and 4889 transitions. [2024-11-13 16:16:20,746 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) [2024-11-13 16:16:20,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3667 states and 4889 transitions. [2024-11-13 16:16:20,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 16:16:20,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:16:20,747 INFO L215 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] [2024-11-13 16:16:20,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-13 16:16:20,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:20,948 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:16:20,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:16:20,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2133332190, now seen corresponding path program 1 times [2024-11-13 16:16:20,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:16:20,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995463469] [2024-11-13 16:16:20,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:20,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:20,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:16:20,952 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:16:20,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 16:16:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:21,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:16:21,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:16:21,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:21,870 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:16:21,874 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:16:21,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995463469] [2024-11-13 16:16:21,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995463469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:16:21,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:16:21,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:16:21,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929916989] [2024-11-13 16:16:21,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:16:21,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:16:21,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:16:21,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:16:21,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:16:21,876 INFO L87 Difference]: Start difference. First operand 3667 states and 4889 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-13 16:16:22,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:16:22,187 INFO L93 Difference]: Finished difference Result 4960 states and 6194 transitions. [2024-11-13 16:16:22,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:16:22,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2024-11-13 16:16:22,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:16:22,193 INFO L225 Difference]: With dead ends: 4960 [2024-11-13 16:16:22,194 INFO L226 Difference]: Without dead ends: 4960 [2024-11-13 16:16:22,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:16:22,194 INFO L432 NwaCegarLoop]: 2303 mSDtfsCounter, 1393 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 4459 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:16:22,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 4459 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:16:22,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4960 states. [2024-11-13 16:16:22,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4960 to 4195. [2024-11-13 16:16:22,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4195 states, 3244 states have (on average 1.7604808877928484) internal successors, (5711), 4162 states have internal predecessors, (5711), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-13 16:16:22,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4195 states to 4195 states and 5777 transitions. [2024-11-13 16:16:22,262 INFO L78 Accepts]: Start accepts. Automaton has 4195 states and 5777 transitions. Word has length 52 [2024-11-13 16:16:22,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:16:22,262 INFO L471 AbstractCegarLoop]: Abstraction has 4195 states and 5777 transitions. [2024-11-13 16:16:22,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-13 16:16:22,263 INFO L276 IsEmpty]: Start isEmpty. Operand 4195 states and 5777 transitions. [2024-11-13 16:16:22,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 16:16:22,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:16:22,264 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:16:22,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-13 16:16:22,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:22,465 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:16:22,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:16:22,466 INFO L85 PathProgramCache]: Analyzing trace with hash 709523097, now seen corresponding path program 1 times [2024-11-13 16:16:22,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:16:22,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433684457] [2024-11-13 16:16:22,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:22,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:22,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:16:22,469 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:16:22,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 16:16:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:22,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:16:22,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:16:22,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:22,988 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:16:22,989 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:16:22,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433684457] [2024-11-13 16:16:22,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433684457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:16:22,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:16:22,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:16:22,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951419853] [2024-11-13 16:16:22,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:16:22,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:16:22,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:16:22,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:16:22,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:16:22,991 INFO L87 Difference]: Start difference. First operand 4195 states and 5777 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:16:23,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:16:23,151 INFO L93 Difference]: Finished difference Result 4177 states and 5747 transitions. [2024-11-13 16:16:23,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:16:23,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-13 16:16:23,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:16:23,158 INFO L225 Difference]: With dead ends: 4177 [2024-11-13 16:16:23,158 INFO L226 Difference]: Without dead ends: 4177 [2024-11-13 16:16:23,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:16:23,159 INFO L432 NwaCegarLoop]: 2199 mSDtfsCounter, 21 mSDsluCounter, 4367 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6566 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 [2024-11-13 16:16:23,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 6566 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:16:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4177 states. [2024-11-13 16:16:23,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4177 to 4177. [2024-11-13 16:16:23,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4177 states, 3226 states have (on average 1.7610043397396156) internal successors, (5681), 4144 states have internal predecessors, (5681), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-13 16:16:23,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4177 states to 4177 states and 5747 transitions. [2024-11-13 16:16:23,222 INFO L78 Accepts]: Start accepts. Automaton has 4177 states and 5747 transitions. Word has length 55 [2024-11-13 16:16:23,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:16:23,222 INFO L471 AbstractCegarLoop]: Abstraction has 4177 states and 5747 transitions. [2024-11-13 16:16:23,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:16:23,223 INFO L276 IsEmpty]: Start isEmpty. Operand 4177 states and 5747 transitions. [2024-11-13 16:16:23,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 16:16:23,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:16:23,224 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:16:23,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 16:16:23,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:23,425 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr381REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:16:23,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:16:23,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1361620203, now seen corresponding path program 1 times [2024-11-13 16:16:23,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:16:23,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793265986] [2024-11-13 16:16:23,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:23,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:23,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:16:23,428 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:16:23,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 16:16:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:23,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:16:23,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:16:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:23,878 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:16:23,879 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:16:23,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793265986] [2024-11-13 16:16:23,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793265986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:16:23,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:16:23,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:16:23,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898334038] [2024-11-13 16:16:23,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:16:23,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:16:23,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:16:23,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:16:23,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:16:23,880 INFO L87 Difference]: Start difference. First operand 4177 states and 5747 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:16:23,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:16:23,977 INFO L93 Difference]: Finished difference Result 4135 states and 5677 transitions. [2024-11-13 16:16:23,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:16:23,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-13 16:16:23,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:16:23,983 INFO L225 Difference]: With dead ends: 4135 [2024-11-13 16:16:23,983 INFO L226 Difference]: Without dead ends: 4135 [2024-11-13 16:16:23,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:16:23,985 INFO L432 NwaCegarLoop]: 2195 mSDtfsCounter, 27 mSDsluCounter, 4353 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6548 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 [2024-11-13 16:16:23,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6548 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:16:23,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4135 states. [2024-11-13 16:16:24,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4135 to 4135. [2024-11-13 16:16:24,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4135 states, 3184 states have (on average 1.762248743718593) internal successors, (5611), 4102 states have internal predecessors, (5611), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-13 16:16:24,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4135 states to 4135 states and 5677 transitions. [2024-11-13 16:16:24,068 INFO L78 Accepts]: Start accepts. Automaton has 4135 states and 5677 transitions. Word has length 55 [2024-11-13 16:16:24,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:16:24,069 INFO L471 AbstractCegarLoop]: Abstraction has 4135 states and 5677 transitions. [2024-11-13 16:16:24,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:16:24,069 INFO L276 IsEmpty]: Start isEmpty. Operand 4135 states and 5677 transitions. [2024-11-13 16:16:24,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 16:16:24,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:16:24,070 INFO L215 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] [2024-11-13 16:16:24,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 16:16:24,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:24,271 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:16:24,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:16:24,273 INFO L85 PathProgramCache]: Analyzing trace with hash 79986328, now seen corresponding path program 1 times [2024-11-13 16:16:24,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:16:24,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687374997] [2024-11-13 16:16:24,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:24,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:24,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:16:24,276 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:16:24,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 16:16:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:24,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:16:24,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:16:24,634 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:16:24,635 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:16:24,637 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 [2024-11-13 16:16:24,687 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:16:24,688 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 [2024-11-13 16:16:24,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:24,719 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:16:24,719 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:16:24,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687374997] [2024-11-13 16:16:24,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687374997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:16:24,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:16:24,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:16:24,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408888741] [2024-11-13 16:16:24,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:16:24,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:16:24,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:16:24,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:16:24,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:16:24,721 INFO L87 Difference]: Start difference. First operand 4135 states and 5677 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) [2024-11-13 16:16:26,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:16:26,042 INFO L93 Difference]: Finished difference Result 4693 states and 6159 transitions. [2024-11-13 16:16:26,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:16:26,043 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 [2024-11-13 16:16:26,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:16:26,050 INFO L225 Difference]: With dead ends: 4693 [2024-11-13 16:16:26,050 INFO L226 Difference]: Without dead ends: 4693 [2024-11-13 16:16:26,050 INFO L431 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 [2024-11-13 16:16:26,051 INFO L432 NwaCegarLoop]: 2317 mSDtfsCounter, 1652 mSDsluCounter, 3699 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 6016 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:16:26,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1661 Valid, 6016 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 16:16:26,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2024-11-13 16:16:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 3847. [2024-11-13 16:16:26,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3847 states, 2899 states have (on average 1.7768195929630908) internal successors, (5151), 3817 states have internal predecessors, (5151), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-13 16:16:26,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3847 states to 3847 states and 5211 transitions. [2024-11-13 16:16:26,093 INFO L78 Accepts]: Start accepts. Automaton has 3847 states and 5211 transitions. Word has length 60 [2024-11-13 16:16:26,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:16:26,093 INFO L471 AbstractCegarLoop]: Abstraction has 3847 states and 5211 transitions. [2024-11-13 16:16:26,093 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) [2024-11-13 16:16:26,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3847 states and 5211 transitions. [2024-11-13 16:16:26,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-13 16:16:26,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:16:26,094 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:16:26,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 16:16:26,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:26,294 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:16:26,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:16:26,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1958904627, now seen corresponding path program 1 times [2024-11-13 16:16:26,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:16:26,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948761143] [2024-11-13 16:16:26,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:26,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:26,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:16:26,297 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:16:26,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 16:16:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:26,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:16:26,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:16:26,723 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 [2024-11-13 16:16:27,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:16:27,583 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 [2024-11-13 16:16:27,601 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:16:27,601 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 [2024-11-13 16:16:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:27,609 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:16:27,609 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:16:27,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948761143] [2024-11-13 16:16:27,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948761143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:16:27,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:16:27,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:16:27,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042977176] [2024-11-13 16:16:27,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:16:27,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:16:27,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:16:27,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:16:27,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:16:27,611 INFO L87 Difference]: Start difference. First operand 3847 states and 5211 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:16:34,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:16:34,965 INFO L93 Difference]: Finished difference Result 3763 states and 5023 transitions. [2024-11-13 16:16:34,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:16:34,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-13 16:16:34,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:16:34,970 INFO L225 Difference]: With dead ends: 3763 [2024-11-13 16:16:34,970 INFO L226 Difference]: Without dead ends: 3763 [2024-11-13 16:16:34,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:16:34,971 INFO L432 NwaCegarLoop]: 1051 mSDtfsCounter, 3254 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3264 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 2486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:16:34,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3264 Valid, 1851 Invalid, 2486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-13 16:16:34,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2024-11-13 16:16:35,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3656. [2024-11-13 16:16:35,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3656 states, 2792 states have (on average 1.7052292263610316) internal successors, (4761), 3626 states have internal predecessors, (4761), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-13 16:16:35,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 4821 transitions. [2024-11-13 16:16:35,010 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 4821 transitions. Word has length 63 [2024-11-13 16:16:35,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:16:35,011 INFO L471 AbstractCegarLoop]: Abstraction has 3656 states and 4821 transitions. [2024-11-13 16:16:35,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:16:35,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 4821 transitions. [2024-11-13 16:16:35,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 16:16:35,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:16:35,012 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:16:35,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 16:16:35,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:35,213 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:16:35,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:16:35,213 INFO L85 PathProgramCache]: Analyzing trace with hash -99461187, now seen corresponding path program 1 times [2024-11-13 16:16:35,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:16:35,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282932497] [2024-11-13 16:16:35,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:35,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:35,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:16:35,216 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:16:35,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 16:16:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:35,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:16:35,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:16:35,641 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 [2024-11-13 16:16:35,662 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 [2024-11-13 16:16:35,706 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 [2024-11-13 16:16:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:35,722 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:16:35,722 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:16:35,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282932497] [2024-11-13 16:16:35,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282932497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:16:35,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:16:35,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:16:35,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604537465] [2024-11-13 16:16:35,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:16:35,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:16:35,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:16:35,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:16:35,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:16:35,724 INFO L87 Difference]: Start difference. First operand 3656 states and 4821 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:16:42,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:16:42,810 INFO L93 Difference]: Finished difference Result 3655 states and 4819 transitions. [2024-11-13 16:16:42,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:16:42,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-13 16:16:42,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:16:42,814 INFO L225 Difference]: With dead ends: 3655 [2024-11-13 16:16:42,814 INFO L226 Difference]: Without dead ends: 3655 [2024-11-13 16:16:42,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:16:42,815 INFO L432 NwaCegarLoop]: 2122 mSDtfsCounter, 2 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 2842 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5653 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:16:42,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5653 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2842 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-13 16:16:42,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2024-11-13 16:16:42,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 3655. [2024-11-13 16:16:42,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 2792 states have (on average 1.704512893982808) internal successors, (4759), 3625 states have internal predecessors, (4759), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-13 16:16:42,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 4819 transitions. [2024-11-13 16:16:42,853 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 4819 transitions. Word has length 68 [2024-11-13 16:16:42,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:16:42,853 INFO L471 AbstractCegarLoop]: Abstraction has 3655 states and 4819 transitions. [2024-11-13 16:16:42,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:16:42,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 4819 transitions. [2024-11-13 16:16:42,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 16:16:42,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:16:42,854 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:16:42,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 16:16:43,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:43,054 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:16:43,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:16:43,055 INFO L85 PathProgramCache]: Analyzing trace with hash -99461186, now seen corresponding path program 1 times [2024-11-13 16:16:43,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:16:43,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377776390] [2024-11-13 16:16:43,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:43,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:43,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:16:43,058 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:16:43,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 16:16:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:43,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 16:16:43,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:16:43,507 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 [2024-11-13 16:16:43,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:16:43,548 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 [2024-11-13 16:16:43,607 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 [2024-11-13 16:16:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:43,633 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:16:43,633 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:16:43,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377776390] [2024-11-13 16:16:43,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377776390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:16:43,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:16:43,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:16:43,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163188458] [2024-11-13 16:16:43,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:16:43,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:16:43,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:16:43,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:16:43,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:16:43,634 INFO L87 Difference]: Start difference. First operand 3655 states and 4819 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:16:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:16:52,911 INFO L93 Difference]: Finished difference Result 3654 states and 4817 transitions. [2024-11-13 16:16:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:16:52,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-13 16:16:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:16:52,915 INFO L225 Difference]: With dead ends: 3654 [2024-11-13 16:16:52,915 INFO L226 Difference]: Without dead ends: 3654 [2024-11-13 16:16:52,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:16:52,915 INFO L432 NwaCegarLoop]: 2122 mSDtfsCounter, 1 mSDsluCounter, 3509 mSDsCounter, 0 mSdLazyCounter, 2861 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5631 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:16:52,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5631 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2861 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2024-11-13 16:16:52,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2024-11-13 16:16:52,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 3654. [2024-11-13 16:16:52,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 2790 states have (on average 1.7050179211469534) internal successors, (4757), 3624 states have internal predecessors, (4757), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-13 16:16:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 4817 transitions. [2024-11-13 16:16:52,951 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 4817 transitions. Word has length 68 [2024-11-13 16:16:52,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:16:52,952 INFO L471 AbstractCegarLoop]: Abstraction has 3654 states and 4817 transitions. [2024-11-13 16:16:52,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:16:52,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 4817 transitions. [2024-11-13 16:16:52,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 16:16:52,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:16:52,952 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:16:52,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 16:16:53,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:53,153 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr386REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:16:53,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:16:53,153 INFO L85 PathProgramCache]: Analyzing trace with hash 935140477, now seen corresponding path program 1 times [2024-11-13 16:16:53,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:16:53,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424711326] [2024-11-13 16:16:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:53,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:53,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:16:53,156 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:16:53,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 16:16:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:53,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 16:16:53,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:16:53,609 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 [2024-11-13 16:16:53,626 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 [2024-11-13 16:16:53,657 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 [2024-11-13 16:16:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:53,670 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:16:53,671 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:16:53,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424711326] [2024-11-13 16:16:53,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424711326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:16:53,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:16:53,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:16:53,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392407578] [2024-11-13 16:16:53,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:16:53,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:16:53,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:16:53,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:16:53,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:16:53,672 INFO L87 Difference]: Start difference. First operand 3654 states and 4817 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:17:00,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:17:00,501 INFO L93 Difference]: Finished difference Result 3653 states and 4814 transitions. [2024-11-13 16:17:00,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:17:00,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-13 16:17:00,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:17:00,505 INFO L225 Difference]: With dead ends: 3653 [2024-11-13 16:17:00,505 INFO L226 Difference]: Without dead ends: 3653 [2024-11-13 16:17:00,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:17:00,505 INFO L432 NwaCegarLoop]: 2120 mSDtfsCounter, 2 mSDsluCounter, 3528 mSDsCounter, 0 mSdLazyCounter, 2839 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5648 SdHoareTripleChecker+Invalid, 2840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:17:00,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5648 Invalid, 2840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2839 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-13 16:17:00,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2024-11-13 16:17:00,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 3653. [2024-11-13 16:17:00,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 2790 states have (on average 1.7039426523297492) internal successors, (4754), 3623 states have internal predecessors, (4754), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-13 16:17:00,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 4814 transitions. [2024-11-13 16:17:00,540 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 4814 transitions. Word has length 68 [2024-11-13 16:17:00,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:17:00,540 INFO L471 AbstractCegarLoop]: Abstraction has 3653 states and 4814 transitions. [2024-11-13 16:17:00,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:17:00,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 4814 transitions. [2024-11-13 16:17:00,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 16:17:00,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:17:00,541 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:17:00,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 16:17:00,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:17:00,741 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr387REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:17:00,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:17:00,742 INFO L85 PathProgramCache]: Analyzing trace with hash 935140478, now seen corresponding path program 1 times [2024-11-13 16:17:00,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:17:00,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966990879] [2024-11-13 16:17:00,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:17:00,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:17:00,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:17:00,744 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:17:00,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 16:17:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:17:01,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 16:17:01,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:17:01,210 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 [2024-11-13 16:17:01,236 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 [2024-11-13 16:17:01,248 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 [2024-11-13 16:17:01,307 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 [2024-11-13 16:17:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:17:01,336 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:17:01,336 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:17:01,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966990879] [2024-11-13 16:17:01,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966990879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:17:01,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:17:01,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:17:01,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088047447] [2024-11-13 16:17:01,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:17:01,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:17:01,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:17:01,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:17:01,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:17:01,338 INFO L87 Difference]: Start difference. First operand 3653 states and 4814 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:17:10,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:17:10,272 INFO L93 Difference]: Finished difference Result 3652 states and 4811 transitions. [2024-11-13 16:17:10,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:17:10,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-13 16:17:10,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:17:10,278 INFO L225 Difference]: With dead ends: 3652 [2024-11-13 16:17:10,282 INFO L226 Difference]: Without dead ends: 3652 [2024-11-13 16:17:10,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:17:10,283 INFO L432 NwaCegarLoop]: 2120 mSDtfsCounter, 1 mSDsluCounter, 3506 mSDsCounter, 0 mSdLazyCounter, 2858 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5626 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:17:10,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5626 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2858 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-11-13 16:17:10,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3652 states. [2024-11-13 16:17:10,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3652 to 3652. [2024-11-13 16:17:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 2787 states have (on average 1.7047003946896304) internal successors, (4751), 3622 states have internal predecessors, (4751), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-13 16:17:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 4811 transitions. [2024-11-13 16:17:10,341 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 4811 transitions. Word has length 68 [2024-11-13 16:17:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:17:10,341 INFO L471 AbstractCegarLoop]: Abstraction has 3652 states and 4811 transitions. [2024-11-13 16:17:10,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:17:10,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 4811 transitions. [2024-11-13 16:17:10,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 16:17:10,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:17:10,343 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:17:10,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 16:17:10,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:17:10,543 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:17:10,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:17:10,544 INFO L85 PathProgramCache]: Analyzing trace with hash 777213860, now seen corresponding path program 1 times [2024-11-13 16:17:10,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:17:10,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5591723] [2024-11-13 16:17:10,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:17:10,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:17:10,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:17:10,546 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:17:10,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 16:17:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:17:10,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 16:17:10,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:17:10,962 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 [2024-11-13 16:17:11,089 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 [2024-11-13 16:17:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:17:11,115 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:17:11,115 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:17:11,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5591723] [2024-11-13 16:17:11,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5591723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:17:11,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:17:11,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 16:17:11,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989550595] [2024-11-13 16:17:11,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:17:11,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:17:11,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:17:11,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:17:11,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:17:11,118 INFO L87 Difference]: Start difference. First operand 3652 states and 4811 transitions. Second operand has 7 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:17:20,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:17:20,709 INFO L93 Difference]: Finished difference Result 3670 states and 4846 transitions. [2024-11-13 16:17:20,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:17:20,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2024-11-13 16:17:20,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:17:20,717 INFO L225 Difference]: With dead ends: 3670 [2024-11-13 16:17:20,717 INFO L226 Difference]: Without dead ends: 3670 [2024-11-13 16:17:20,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:17:20,717 INFO L432 NwaCegarLoop]: 2084 mSDtfsCounter, 27 mSDsluCounter, 6909 mSDsCounter, 0 mSdLazyCounter, 3705 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 8993 SdHoareTripleChecker+Invalid, 3716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:17:20,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 8993 Invalid, 3716 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 3705 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2024-11-13 16:17:20,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2024-11-13 16:17:20,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3661. [2024-11-13 16:17:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3661 states, 2795 states have (on average 1.7037567084078713) internal successors, (4762), 3629 states have internal predecessors, (4762), 30 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (44), 29 states have call predecessors, (44), 30 states have call successors, (44) [2024-11-13 16:17:20,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3661 states to 3661 states and 4836 transitions. [2024-11-13 16:17:20,770 INFO L78 Accepts]: Start accepts. Automaton has 3661 states and 4836 transitions. Word has length 76 [2024-11-13 16:17:20,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:17:20,770 INFO L471 AbstractCegarLoop]: Abstraction has 3661 states and 4836 transitions. [2024-11-13 16:17:20,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:17:20,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3661 states and 4836 transitions. [2024-11-13 16:17:20,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 16:17:20,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:17:20,782 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:17:20,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 16:17:20,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:17:20,983 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)] === [2024-11-13 16:17:20,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:17:20,984 INFO L85 PathProgramCache]: Analyzing trace with hash 777213861, now seen corresponding path program 1 times [2024-11-13 16:17:20,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:17:20,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2081576419] [2024-11-13 16:17:20,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:17:20,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:17:20,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:17:20,986 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:17:20,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 16:17:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:17:21,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:17:21,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:17:21,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:17:21,434 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:17:21,435 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:17:21,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081576419] [2024-11-13 16:17:21,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081576419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:17:21,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:17:21,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:17:21,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135871512] [2024-11-13 16:17:21,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:17:21,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:17:21,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:17:21,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:17:21,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:17:21,437 INFO L87 Difference]: Start difference. First operand 3661 states and 4836 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:17:21,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:17:21,540 INFO L93 Difference]: Finished difference Result 3655 states and 4818 transitions. [2024-11-13 16:17:21,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:17:21,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2024-11-13 16:17:21,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:17:21,552 INFO L225 Difference]: With dead ends: 3655 [2024-11-13 16:17:21,552 INFO L226 Difference]: Without dead ends: 3655 [2024-11-13 16:17:21,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:17:21,552 INFO L432 NwaCegarLoop]: 2119 mSDtfsCounter, 0 mSDsluCounter, 4230 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6349 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 [2024-11-13 16:17:21,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6349 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:17:21,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2024-11-13 16:17:21,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 3655. [2024-11-13 16:17:21,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 2789 states have (on average 1.7045536034420938) internal successors, (4754), 3625 states have internal predecessors, (4754), 30 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2024-11-13 16:17:21,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 4818 transitions. [2024-11-13 16:17:21,608 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 4818 transitions. Word has length 76 [2024-11-13 16:17:21,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:17:21,609 INFO L471 AbstractCegarLoop]: Abstraction has 3655 states and 4818 transitions. [2024-11-13 16:17:21,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:17:21,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 4818 transitions. [2024-11-13 16:17:21,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 16:17:21,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:17:21,610 INFO L215 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] [2024-11-13 16:17:21,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 16:17:21,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:17:21,811 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:17:21,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:17:21,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1585847947, now seen corresponding path program 1 times [2024-11-13 16:17:21,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:17:21,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122485094] [2024-11-13 16:17:21,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:17:21,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:17:21,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:17:21,814 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:17:21,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 16:17:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:17:22,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:17:22,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:17:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:17:22,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:17:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:17:22,443 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:17:22,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122485094] [2024-11-13 16:17:22,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122485094] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:17:22,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:17:22,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-13 16:17:22,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470132329] [2024-11-13 16:17:22,444 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:17:22,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 16:17:22,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:17:22,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 16:17:22,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:17:22,446 INFO L87 Difference]: Start difference. First operand 3655 states and 4818 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:17:22,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:17:22,809 INFO L93 Difference]: Finished difference Result 3667 states and 4838 transitions. [2024-11-13 16:17:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:17:22,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2024-11-13 16:17:22,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:17:22,825 INFO L225 Difference]: With dead ends: 3667 [2024-11-13 16:17:22,825 INFO L226 Difference]: Without dead ends: 3667 [2024-11-13 16:17:22,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:17:22,828 INFO L432 NwaCegarLoop]: 2118 mSDtfsCounter, 6 mSDsluCounter, 8451 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10569 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:17:22,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 10569 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:17:22,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3667 states. [2024-11-13 16:17:22,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3667 to 3665. [2024-11-13 16:17:22,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3665 states, 2798 states have (on average 1.7044317369549677) internal successors, (4769), 3634 states have internal predecessors, (4769), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2024-11-13 16:17:22,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 4833 transitions. [2024-11-13 16:17:22,887 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 4833 transitions. Word has length 77 [2024-11-13 16:17:22,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:17:22,888 INFO L471 AbstractCegarLoop]: Abstraction has 3665 states and 4833 transitions. [2024-11-13 16:17:22,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:17:22,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 4833 transitions. [2024-11-13 16:17:22,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 16:17:22,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:17:22,889 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:17:22,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 16:17:23,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:17:23,090 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:17:23,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:17:23,090 INFO L85 PathProgramCache]: Analyzing trace with hash 138500452, now seen corresponding path program 2 times [2024-11-13 16:17:23,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:17:23,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476168308] [2024-11-13 16:17:23,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:17:23,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:17:23,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:17:23,093 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:17:23,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 16:17:41,743 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:17:41,743 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:17:41,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:17:41,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:17:41,979 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:17:41,979 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 [2024-11-13 16:17:42,011 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 [2024-11-13 16:17:42,294 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:17:42,294 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 [2024-11-13 16:17:42,348 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 [2024-11-13 16:17:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:17:42,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:17:42,519 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-13 16:17:42,519 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 [2024-11-13 16:17:42,532 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1968 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_1968) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem37#1.base|)) is different from false [2024-11-13 16:17:42,534 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:17:42,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476168308] [2024-11-13 16:17:42,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476168308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:17:42,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [623742593] [2024-11-13 16:17:42,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:17:42,535 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:17:42,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:17:42,545 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:17:42,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-13 16:17:44,485 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:17:44,485 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:17:44,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 16:17:44,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:17:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:17:44,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:17:45,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:17:45,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [623742593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:17:45,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:17:45,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-11-13 16:17:45,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623687453] [2024-11-13 16:17:45,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:17:45,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 16:17:45,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:17:45,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 16:17:45,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2024-11-13 16:17:45,221 INFO L87 Difference]: Start difference. First operand 3665 states and 4833 transitions. Second operand has 24 states, 23 states have (on average 6.260869565217392) internal successors, (144), 23 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 16:18:12,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:18:12,323 INFO L93 Difference]: Finished difference Result 3681 states and 4861 transitions. [2024-11-13 16:18:12,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 16:18:12,323 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.260869565217392) internal successors, (144), 23 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 80 [2024-11-13 16:18:12,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:18:12,329 INFO L225 Difference]: With dead ends: 3681 [2024-11-13 16:18:12,329 INFO L226 Difference]: Without dead ends: 3677 [2024-11-13 16:18:12,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=413, Invalid=2242, Unknown=1, NotChecked=100, Total=2756 [2024-11-13 16:18:12,330 INFO L432 NwaCegarLoop]: 1355 mSDtfsCounter, 1678 mSDsluCounter, 16717 mSDsCounter, 0 mSdLazyCounter, 12366 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 18072 SdHoareTripleChecker+Invalid, 12408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 12366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:18:12,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1695 Valid, 18072 Invalid, 12408 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [42 Valid, 12366 Invalid, 0 Unknown, 0 Unchecked, 25.5s Time] [2024-11-13 16:18:12,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2024-11-13 16:18:12,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 3673. [2024-11-13 16:18:12,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3673 states, 2807 states have (on average 1.7025293908086925) internal successors, (4779), 3642 states have internal predecessors, (4779), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2024-11-13 16:18:12,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3673 states to 3673 states and 4843 transitions. [2024-11-13 16:18:12,386 INFO L78 Accepts]: Start accepts. Automaton has 3673 states and 4843 transitions. Word has length 80 [2024-11-13 16:18:12,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:18:12,389 INFO L471 AbstractCegarLoop]: Abstraction has 3673 states and 4843 transitions. [2024-11-13 16:18:12,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.260869565217392) internal successors, (144), 23 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 16:18:12,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3673 states and 4843 transitions. [2024-11-13 16:18:12,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-13 16:18:12,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:12,390 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:12,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2024-11-13 16:18:12,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 16:18:12,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:18:12,791 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:18:12,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:12,792 INFO L85 PathProgramCache]: Analyzing trace with hash 225867781, now seen corresponding path program 1 times [2024-11-13 16:18:12,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:18:12,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1934525704] [2024-11-13 16:18:12,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:12,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:18:12,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:18:12,795 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:18:12,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 16:18:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:13,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:18:13,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:18:13,554 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:18:13,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:18:14,407 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:18:14,407 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:18:14,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934525704] [2024-11-13 16:18:14,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934525704] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:18:14,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:18:14,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-13 16:18:14,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239181114] [2024-11-13 16:18:14,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:18:14,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 16:18:14,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:18:14,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 16:18:14,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-13 16:18:14,409 INFO L87 Difference]: Start difference. First operand 3673 states and 4843 transitions. Second operand has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:18:17,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:18:17,266 INFO L93 Difference]: Finished difference Result 3697 states and 4882 transitions. [2024-11-13 16:18:17,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 16:18:17,266 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 86 [2024-11-13 16:18:17,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:18:17,271 INFO L225 Difference]: With dead ends: 3697 [2024-11-13 16:18:17,271 INFO L226 Difference]: Without dead ends: 3691 [2024-11-13 16:18:17,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 16:18:17,272 INFO L432 NwaCegarLoop]: 2118 mSDtfsCounter, 26 mSDsluCounter, 23254 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 25372 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:18:17,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 25372 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 16:18:17,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2024-11-13 16:18:17,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3691. [2024-11-13 16:18:17,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 2825 states have (on average 1.6998230088495576) internal successors, (4802), 3660 states have internal predecessors, (4802), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2024-11-13 16:18:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 4866 transitions. [2024-11-13 16:18:17,315 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 4866 transitions. Word has length 86 [2024-11-13 16:18:17,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:18:17,315 INFO L471 AbstractCegarLoop]: Abstraction has 3691 states and 4866 transitions. [2024-11-13 16:18:17,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:18:17,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 4866 transitions. [2024-11-13 16:18:17,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-13 16:18:17,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:17,316 INFO L215 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:17,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-13 16:18:17,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:18:17,517 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:18:17,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:17,517 INFO L85 PathProgramCache]: Analyzing trace with hash -333558459, now seen corresponding path program 2 times [2024-11-13 16:18:17,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:18:17,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054659895] [2024-11-13 16:18:17,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:18:17,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:18:17,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:18:17,520 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:18:17,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 16:18:42,879 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:18:42,879 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:18:42,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-13 16:18:42,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:18:43,089 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 [2024-11-13 16:18:43,106 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:18:43,106 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 [2024-11-13 16:18:43,144 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 [2024-11-13 16:18:43,153 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 [2024-11-13 16:18:43,299 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 [2024-11-13 16:18:43,307 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 [2024-11-13 16:18:44,022 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:18:44,023 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 [2024-11-13 16:18:44,037 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 [2024-11-13 16:18:44,113 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 [2024-11-13 16:18:44,121 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 [2024-11-13 16:18:44,159 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-13 16:18:44,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:18:44,816 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2595 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_2595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_2594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_2595 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_2595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2024-11-13 16:18:44,823 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:18:44,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054659895] [2024-11-13 16:18:44,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054659895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:18:44,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [789532904] [2024-11-13 16:18:44,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:18:44,824 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:18:44,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:18:44,825 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:18:44,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-13 16:18:46,940 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:18:46,940 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:18:46,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 16:18:46,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:18:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:18:48,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:18:51,376 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:18:51,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [789532904] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:18:51,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:18:51,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2024-11-13 16:18:51,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684526219] [2024-11-13 16:18:51,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:18:51,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-13 16:18:51,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:18:51,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-13 16:18:51,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2024-11-13 16:18:51,379 INFO L87 Difference]: Start difference. First operand 3691 states and 4866 transitions. Second operand has 58 states, 57 states have (on average 3.1578947368421053) internal successors, (180), 58 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 16:20:08,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:08,013 INFO L93 Difference]: Finished difference Result 3787 states and 5018 transitions. [2024-11-13 16:20:08,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-13 16:20:08,014 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.1578947368421053) internal successors, (180), 58 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 98 [2024-11-13 16:20:08,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:08,023 INFO L225 Difference]: With dead ends: 3787 [2024-11-13 16:20:08,023 INFO L226 Difference]: Without dead ends: 3775 [2024-11-13 16:20:08,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4856 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=5256, Invalid=18617, Unknown=1, NotChecked=306, Total=24180 [2024-11-13 16:20:08,030 INFO L432 NwaCegarLoop]: 1381 mSDtfsCounter, 1676 mSDsluCounter, 36569 mSDsCounter, 0 mSdLazyCounter, 26313 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 37950 SdHoareTripleChecker+Invalid, 26385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 26313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:08,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 37950 Invalid, 26385 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [72 Valid, 26313 Invalid, 0 Unknown, 0 Unchecked, 58.9s Time] [2024-11-13 16:20:08,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2024-11-13 16:20:08,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3773. [2024-11-13 16:20:08,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3773 states, 2907 states have (on average 1.6838665290677675) internal successors, (4895), 3741 states have internal predecessors, (4895), 30 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2024-11-13 16:20:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 4959 transitions. [2024-11-13 16:20:08,108 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 4959 transitions. Word has length 98 [2024-11-13 16:20:08,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:08,108 INFO L471 AbstractCegarLoop]: Abstraction has 3773 states and 4959 transitions. [2024-11-13 16:20:08,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.1578947368421053) internal successors, (180), 58 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 16:20:08,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 4959 transitions. [2024-11-13 16:20:08,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-13 16:20:08,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:08,111 INFO L215 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] [2024-11-13 16:20:08,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-13 16:20:08,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-11-13 16:20:08,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 16:20:08,513 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr390REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:20:08,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:08,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2009623132, now seen corresponding path program 1 times [2024-11-13 16:20:08,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:20:08,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391285348] [2024-11-13 16:20:08,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:08,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:08,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:08,516 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:08,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-13 16:20:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:09,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 16:20:09,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:09,231 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:20:09,232 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:20:09,233 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:20:09,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2024-11-13 16:20:09,584 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:20:09,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2024-11-13 16:20:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2024-11-13 16:20:09,606 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:20:09,606 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:20:09,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391285348] [2024-11-13 16:20:09,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391285348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:20:09,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:20:09,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:20:09,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825995204] [2024-11-13 16:20:09,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:20:09,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:20:09,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:20:09,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:20:09,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:20:09,608 INFO L87 Difference]: Start difference. First operand 3773 states and 4959 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2024-11-13 16:20:10,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:10,528 INFO L93 Difference]: Finished difference Result 3930 states and 4849 transitions. [2024-11-13 16:20:10,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:20:10,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 120 [2024-11-13 16:20:10,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:10,540 INFO L225 Difference]: With dead ends: 3930 [2024-11-13 16:20:10,540 INFO L226 Difference]: Without dead ends: 3930 [2024-11-13 16:20:10,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:20:10,542 INFO L432 NwaCegarLoop]: 2109 mSDtfsCounter, 770 mSDsluCounter, 4875 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 6984 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:10,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 6984 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 16:20:10,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2024-11-13 16:20:10,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3369. [2024-11-13 16:20:10,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3369 states, 2504 states have (on average 1.7180511182108626) internal successors, (4302), 3340 states have internal predecessors, (4302), 27 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-13 16:20:10,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 4359 transitions. [2024-11-13 16:20:10,595 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 4359 transitions. Word has length 120 [2024-11-13 16:20:10,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:10,595 INFO L471 AbstractCegarLoop]: Abstraction has 3369 states and 4359 transitions. [2024-11-13 16:20:10,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2024-11-13 16:20:10,595 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 4359 transitions. [2024-11-13 16:20:10,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-13 16:20:10,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:10,596 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:10,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-13 16:20:10,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:10,799 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:20:10,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash -132299404, now seen corresponding path program 1 times [2024-11-13 16:20:10,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:20:10,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872003243] [2024-11-13 16:20:10,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:10,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:10,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:10,807 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:10,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 16:20:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:11,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-13 16:20:11,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:11,846 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:20:11,846 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 [2024-11-13 16:20:11,866 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 [2024-11-13 16:20:12,275 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:20:12,275 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 [2024-11-13 16:20:12,394 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:20:12,395 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 [2024-11-13 16:20:12,447 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 [2024-11-13 16:20:12,478 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:20:12,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:12,545 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-13 16:20:12,546 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 [2024-11-13 16:20:12,556 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3624 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_3624) |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 [2024-11-13 16:20:12,570 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3624 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_3624) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-13 16:20:13,046 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3624 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3670 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_3670)) (.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_3624) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2024-11-13 16:20:13,048 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:20:13,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872003243] [2024-11-13 16:20:13,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872003243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:13,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [882581537] [2024-11-13 16:20:13,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:13,049 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:20:13,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:20:13,051 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:20:13,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2024-11-13 16:20:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:17,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-13 16:20:17,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:17,092 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 [2024-11-13 16:20:17,256 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 16:20:17,256 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 [2024-11-13 16:20:17,341 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 [2024-11-13 16:20:17,543 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 [2024-11-13 16:20:19,088 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:20:19,089 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 [2024-11-13 16:20:19,321 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:20:19,321 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 [2024-11-13 16:20:19,359 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 [2024-11-13 16:20:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:20:19,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:19,478 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4093 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4093) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-13 16:20:19,495 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4093 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4093) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2024-11-13 16:20:20,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [882581537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:20,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:20:20,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2024-11-13 16:20:20,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055927547] [2024-11-13 16:20:20,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:20,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 16:20:20,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:20:20,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 16:20:20,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=20, NotChecked=200, Total=600 [2024-11-13 16:20:20,182 INFO L87 Difference]: Start difference. First operand 3369 states and 4359 transitions. Second operand has 18 states, 15 states have (on average 6.733333333333333) internal successors, (101), 18 states have internal predecessors, (101), 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) [2024-11-13 16:20:46,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:46,629 INFO L93 Difference]: Finished difference Result 3370 states and 4361 transitions. [2024-11-13 16:20:46,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 16:20:46,629 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 6.733333333333333) internal successors, (101), 18 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 123 [2024-11-13 16:20:46,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:46,638 INFO L225 Difference]: With dead ends: 3370 [2024-11-13 16:20:46,638 INFO L226 Difference]: Without dead ends: 3370 [2024-11-13 16:20:46,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=334, Unknown=21, NotChecked=210, Total=650 [2024-11-13 16:20:46,639 INFO L432 NwaCegarLoop]: 1357 mSDtfsCounter, 1613 mSDsluCounter, 13437 mSDsCounter, 0 mSdLazyCounter, 11029 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 14794 SdHoareTripleChecker+Invalid, 11046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 11029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:46,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1628 Valid, 14794 Invalid, 11046 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 11029 Invalid, 0 Unknown, 0 Unchecked, 26.1s Time] [2024-11-13 16:20:46,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2024-11-13 16:20:46,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 3368. [2024-11-13 16:20:46,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 2504 states have (on average 1.7172523961661341) internal successors, (4300), 3339 states have internal predecessors, (4300), 27 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-13 16:20:46,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 4357 transitions. [2024-11-13 16:20:46,684 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 4357 transitions. Word has length 123 [2024-11-13 16:20:46,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:46,684 INFO L471 AbstractCegarLoop]: Abstraction has 3368 states and 4357 transitions. [2024-11-13 16:20:46,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 6.733333333333333) internal successors, (101), 18 states have internal predecessors, (101), 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) [2024-11-13 16:20:46,685 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 4357 transitions. [2024-11-13 16:20:46,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-13 16:20:46,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:46,686 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:46,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-13 16:20:46,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (40)] Ended with exit code 0 [2024-11-13 16:20:47,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 16:20:47,087 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:20:47,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:47,087 INFO L85 PathProgramCache]: Analyzing trace with hash -132299403, now seen corresponding path program 1 times [2024-11-13 16:20:47,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:20:47,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801098937] [2024-11-13 16:20:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:47,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:47,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:47,090 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:47,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-13 16:20:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:47,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-13 16:20:47,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:48,001 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:20:48,001 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 [2024-11-13 16:20:48,009 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 [2024-11-13 16:20:48,034 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 [2024-11-13 16:20:48,042 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 [2024-11-13 16:20:48,167 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 [2024-11-13 16:20:48,172 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 [2024-11-13 16:20:49,126 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:20:49,126 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 [2024-11-13 16:20:49,139 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 [2024-11-13 16:20:49,294 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:20:49,294 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 [2024-11-13 16:20:49,307 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 [2024-11-13 16:20:49,331 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 [2024-11-13 16:20:49,336 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 [2024-11-13 16:20:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:20:49,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:49,549 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4607 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4608 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4608) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:20:49,597 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_4607 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_4607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_4607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4608 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_4607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_4608) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-13 16:20:51,159 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4700 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4699 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4700) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4699) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4700 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4699 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4608 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4699))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4700) .cse2 v_ArrVal_4607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_4608) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 16:20:51,167 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:20:51,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801098937] [2024-11-13 16:20:51,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801098937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:51,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [349135551] [2024-11-13 16:20:51,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:51,167 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:20:51,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:20:51,169 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:20:51,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2024-11-13 16:22:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:25,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-13 16:22:25,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:25,976 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 [2024-11-13 16:22:26,121 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:22:26,121 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 [2024-11-13 16:22:26,128 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 [2024-11-13 16:22:26,143 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 [2024-11-13 16:22:26,159 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 [2024-11-13 16:22:26,245 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 [2024-11-13 16:22:26,252 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 [2024-11-13 16:22:26,985 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:22:26,985 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 [2024-11-13 16:22:26,990 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 [2024-11-13 16:22:27,065 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:22:27,065 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 [2024-11-13 16:22:27,070 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 [2024-11-13 16:22:27,126 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 [2024-11-13 16:22:27,130 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 [2024-11-13 16:22:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:22:27,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:27,194 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5170 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5169 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5170) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:22:27,221 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5170 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5169 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5170) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2024-11-13 16:22:28,677 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5261 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5262 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5261) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5262) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_5261 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5262 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5170 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5262))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5261) .cse2 v_ArrVal_5169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5170) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 16:22:28,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [349135551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:28,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:22:28,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-13 16:22:28,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768946841] [2024-11-13 16:22:28,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:28,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:22:28,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:22:28,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:22:28,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=110, Unknown=6, NotChecked=150, Total=306 [2024-11-13 16:22:28,689 INFO L87 Difference]: Start difference. First operand 3368 states and 4357 transitions. Second operand has 10 states, 8 states have (on average 10.375) internal successors, (83), 10 states have internal predecessors, (83), 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) [2024-11-13 16:22:50,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:22:50,530 INFO L93 Difference]: Finished difference Result 3367 states and 4355 transitions. [2024-11-13 16:22:50,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:22:50,531 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 10.375) internal successors, (83), 10 states have internal predecessors, (83), 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 123 [2024-11-13 16:22:50,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:22:50,538 INFO L225 Difference]: With dead ends: 3367 [2024-11-13 16:22:50,539 INFO L226 Difference]: Without dead ends: 3367 [2024-11-13 16:22:50,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 239 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=219, Unknown=6, NotChecked=210, Total=506 [2024-11-13 16:22:50,540 INFO L432 NwaCegarLoop]: 1383 mSDtfsCounter, 1597 mSDsluCounter, 5219 mSDsCounter, 0 mSdLazyCounter, 8687 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 6602 SdHoareTripleChecker+Invalid, 8697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 8687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:22:50,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1606 Valid, 6602 Invalid, 8697 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 8687 Invalid, 0 Unknown, 0 Unchecked, 21.4s Time] [2024-11-13 16:22:50,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2024-11-13 16:22:50,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 3367. [2024-11-13 16:22:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3367 states, 2504 states have (on average 1.7164536741214058) internal successors, (4298), 3338 states have internal predecessors, (4298), 27 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-13 16:22:50,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3367 states to 3367 states and 4355 transitions. [2024-11-13 16:22:50,580 INFO L78 Accepts]: Start accepts. Automaton has 3367 states and 4355 transitions. Word has length 123 [2024-11-13 16:22:50,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:22:50,580 INFO L471 AbstractCegarLoop]: Abstraction has 3367 states and 4355 transitions. [2024-11-13 16:22:50,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 10.375) internal successors, (83), 10 states have internal predecessors, (83), 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) [2024-11-13 16:22:50,581 INFO L276 IsEmpty]: Start isEmpty. Operand 3367 states and 4355 transitions. [2024-11-13 16:22:50,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-13 16:22:50,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:22:50,582 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:50,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-13 16:22:50,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (42)] Ended with exit code 0 [2024-11-13 16:22:50,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 16:22:50,982 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:22:50,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:50,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1448778764, now seen corresponding path program 1 times [2024-11-13 16:22:50,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:22:50,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [63952662] [2024-11-13 16:22:50,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:50,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:50,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:50,985 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:50,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-13 16:22:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:51,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-13 16:22:51,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:51,982 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 [2024-11-13 16:22:51,998 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:22:51,998 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 [2024-11-13 16:22:52,025 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 [2024-11-13 16:22:52,033 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 [2024-11-13 16:22:52,146 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 [2024-11-13 16:22:52,151 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 [2024-11-13 16:22:52,997 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:22:52,998 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 [2024-11-13 16:22:53,010 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 [2024-11-13 16:22:53,116 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:22:53,116 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 [2024-11-13 16:22:53,126 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 [2024-11-13 16:22:53,220 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:22:53,220 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 [2024-11-13 16:22:53,236 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 [2024-11-13 16:22:53,256 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 [2024-11-13 16:22:53,263 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 [2024-11-13 16:22:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:22:53,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:53,432 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5748 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_5748) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:22:53,456 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5748 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5748) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd (_ bv12 32) .cse2))))))) is different from false [2024-11-13 16:22:53,506 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5748 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5746))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5745) .cse0 v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5748) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5745) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5746) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd (_ bv12 32) .cse3)))))) is different from false [2024-11-13 16:22:53,584 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_5745) (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_5746) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5748 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_5746))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_5745) .cse3 v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_5748) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-13 16:22:55,250 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5748 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5839 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5840 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5840))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_5746))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5839) .cse0 v_ArrVal_5745) .cse1 v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5748) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_5839 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5840 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5840))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5839) .cse6 v_ArrVal_5745) (select (select (store .cse7 .cse6 v_ArrVal_5746) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5747))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd (_ bv12 32) .cse5)))))) is different from false [2024-11-13 16:22:55,262 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:22:55,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63952662] [2024-11-13 16:22:55,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63952662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:55,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1656960981] [2024-11-13 16:22:55,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:55,263 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:22:55,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:22:55,268 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:22:55,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2024-11-13 16:23:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:19,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-13 16:23:19,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:23:19,504 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 [2024-11-13 16:23:19,736 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:23:19,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 16:23:19,749 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 [2024-11-13 16:23:19,770 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 [2024-11-13 16:23:19,781 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 [2024-11-13 16:23:19,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 16:23:19,907 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 [2024-11-13 16:23:20,998 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:23:20,998 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 [2024-11-13 16:23:21,005 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 [2024-11-13 16:23:21,116 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:23:21,116 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 [2024-11-13 16:23:21,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:23:21,213 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:23:21,213 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 [2024-11-13 16:23:21,230 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 [2024-11-13 16:23:21,261 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 [2024-11-13 16:23:21,272 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 [2024-11-13 16:23:21,278 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:23:21,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:23:21,348 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6327) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:23:21,381 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6327) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-13 16:23:21,491 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6325) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6324) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6324))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6325) .cse2 v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_6327) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 16:23:21,550 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_6324))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_6325) .cse1 v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_6327) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_6325) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_6324) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-13 16:23:23,187 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6419 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6418 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6419))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6418) .cse1 v_ArrVal_6325) (select (select (store .cse2 .cse1 v_ArrVal_6324) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_6326))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6419 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6418 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6419))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_6324))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6418) .cse4 v_ArrVal_6325) .cse5 v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_6327) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-13 16:23:23,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1656960981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:23:23,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:23:23,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-11-13 16:23:23,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958890746] [2024-11-13 16:23:23,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:23:23,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 16:23:23,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:23:23,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 16:23:23,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=134, Unknown=10, NotChecked=310, Total=506 [2024-11-13 16:23:23,201 INFO L87 Difference]: Start difference. First operand 3367 states and 4355 transitions. Second operand has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 11 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:23:43,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:23:43,564 INFO L93 Difference]: Finished difference Result 3366 states and 4353 transitions. [2024-11-13 16:23:43,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 16:23:43,565 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 11 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2024-11-13 16:23:43,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:23:43,570 INFO L225 Difference]: With dead ends: 3366 [2024-11-13 16:23:43,570 INFO L226 Difference]: Without dead ends: 3366 [2024-11-13 16:23:43,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=282, Unknown=10, NotChecked=430, Total=812 [2024-11-13 16:23:43,571 INFO L432 NwaCegarLoop]: 1382 mSDtfsCounter, 1597 mSDsluCounter, 3574 mSDsCounter, 0 mSdLazyCounter, 6119 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 4956 SdHoareTripleChecker+Invalid, 6129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 6119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:23:43,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1606 Valid, 4956 Invalid, 6129 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 6119 Invalid, 0 Unknown, 0 Unchecked, 19.9s Time] [2024-11-13 16:23:43,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2024-11-13 16:23:43,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 3366. [2024-11-13 16:23:43,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3366 states, 2504 states have (on average 1.7156549520766773) internal successors, (4296), 3337 states have internal predecessors, (4296), 27 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-13 16:23:43,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 4353 transitions. [2024-11-13 16:23:43,612 INFO L78 Accepts]: Start accepts. Automaton has 3366 states and 4353 transitions. Word has length 126 [2024-11-13 16:23:43,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:23:43,612 INFO L471 AbstractCegarLoop]: Abstraction has 3366 states and 4353 transitions. [2024-11-13 16:23:43,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 11 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:23:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 3366 states and 4353 transitions. [2024-11-13 16:23:43,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-13 16:23:43,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:23:43,613 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:23:43,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-13 16:23:43,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (44)] Ended with exit code 0 [2024-11-13 16:23:44,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 16:23:44,014 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:23:44,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:23:44,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1448778763, now seen corresponding path program 1 times [2024-11-13 16:23:44,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:23:44,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [876326383] [2024-11-13 16:23:44,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:23:44,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:23:44,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:23:44,017 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:23:44,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-13 16:23:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:44,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-13 16:23:44,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:23:44,897 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 [2024-11-13 16:23:45,118 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:23:45,118 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 [2024-11-13 16:23:45,138 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 [2024-11-13 16:23:45,696 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:23:45,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-13 16:23:45,796 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:23:45,796 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 [2024-11-13 16:23:45,924 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:23:45,925 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 [2024-11-13 16:23:46,019 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 [2024-11-13 16:23:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:23:46,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:23:46,133 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-13 16:23:46,134 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 [2024-11-13 16:23:46,269 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6857 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_6857) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-13 16:23:46,295 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6856 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6857 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6856)) (.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_6857) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-13 16:23:46,315 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6856 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6857 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6856))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6857) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-13 16:23:46,865 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6903 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6856 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6857 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6903))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6856)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6857) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-13 16:23:46,868 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:23:46,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876326383] [2024-11-13 16:23:46,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876326383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:23:46,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1441393266] [2024-11-13 16:23:46,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:23:46,868 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:23:46,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:23:46,870 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:23:46,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2024-11-13 16:24:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:08,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-13 16:24:08,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:08,989 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 [2024-11-13 16:24:09,253 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 16:24:09,253 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 [2024-11-13 16:24:09,323 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 [2024-11-13 16:24:09,612 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 [2024-11-13 16:24:11,202 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:24:11,202 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 [2024-11-13 16:24:11,429 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:24:11,429 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 [2024-11-13 16:24:11,589 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:24:11,589 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 [2024-11-13 16:24:11,626 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 [2024-11-13 16:24:11,714 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:24:11,714 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:11,852 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7342 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7342) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 16:24:11,872 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7342 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7341))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7342)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:24:11,887 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7342 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7341))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7342)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:24:12,450 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7342 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7388 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7388))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7341)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7342)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:24:12,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1441393266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:12,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:24:12,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-11-13 16:24:12,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141819206] [2024-11-13 16:24:12,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:24:12,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 16:24:12,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:24:12,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 16:24:12,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=415, Unknown=26, NotChecked=392, Total=930 [2024-11-13 16:24:12,458 INFO L87 Difference]: Start difference. First operand 3366 states and 4353 transitions. Second operand has 20 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 20 states have internal predecessors, (103), 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) [2024-11-13 16:24:37,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:24:37,305 INFO L93 Difference]: Finished difference Result 3367 states and 4355 transitions. [2024-11-13 16:24:37,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:24:37,305 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 20 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 126 [2024-11-13 16:24:37,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:24:37,309 INFO L225 Difference]: With dead ends: 3367 [2024-11-13 16:24:37,309 INFO L226 Difference]: Without dead ends: 3367 [2024-11-13 16:24:37,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=106, Invalid=452, Unknown=26, NotChecked=408, Total=992 [2024-11-13 16:24:37,310 INFO L432 NwaCegarLoop]: 1356 mSDtfsCounter, 1623 mSDsluCounter, 11175 mSDsCounter, 0 mSdLazyCounter, 9149 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 12531 SdHoareTripleChecker+Invalid, 9184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 9149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:24:37,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1638 Valid, 12531 Invalid, 9184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 9149 Invalid, 0 Unknown, 0 Unchecked, 24.5s Time] [2024-11-13 16:24:37,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2024-11-13 16:24:37,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 3365. [2024-11-13 16:24:37,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 2504 states have (on average 1.714856230031949) internal successors, (4294), 3336 states have internal predecessors, (4294), 27 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-13 16:24:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 4351 transitions. [2024-11-13 16:24:37,356 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 4351 transitions. Word has length 126 [2024-11-13 16:24:37,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:24:37,356 INFO L471 AbstractCegarLoop]: Abstraction has 3365 states and 4351 transitions. [2024-11-13 16:24:37,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 20 states have internal predecessors, (103), 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) [2024-11-13 16:24:37,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 4351 transitions. [2024-11-13 16:24:37,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-13 16:24:37,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:24:37,357 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:37,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (46)] Ended with exit code 0 [2024-11-13 16:24:37,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-13 16:24:37,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:37,758 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:24:37,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:37,759 INFO L85 PathProgramCache]: Analyzing trace with hash 442123579, now seen corresponding path program 1 times [2024-11-13 16:24:37,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:24:37,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689913910] [2024-11-13 16:24:37,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:37,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:37,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:37,761 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:37,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-13 16:24:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:38,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-13 16:24:38,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:38,658 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 [2024-11-13 16:24:38,874 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:24:38,874 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 [2024-11-13 16:24:38,895 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 [2024-11-13 16:24:39,320 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:24:39,321 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 [2024-11-13 16:24:39,398 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:24:39,398 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 [2024-11-13 16:24:39,523 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:24:39,523 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 [2024-11-13 16:24:39,651 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:24:39,651 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 [2024-11-13 16:24:39,729 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 [2024-11-13 16:24:39,767 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:24:39,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:39,848 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-13 16:24:39,848 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 [2024-11-13 16:24:39,858 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7842 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7842) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem41#1.base|)) is different from false [2024-11-13 16:24:39,872 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7842 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_7842) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-13 16:24:39,891 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7842 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7841)) (.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_7842) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-13 16:24:39,933 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7842 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7841))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_7842) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-13 16:24:39,957 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7842 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7840 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7840))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7841)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_7842) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-13 16:24:39,977 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7842 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7840 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7840))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7841)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_7842) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-13 16:24:40,477 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7842 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7840 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7888))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7840)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7841)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_7842) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-13 16:24:40,481 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:24:40,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689913910] [2024-11-13 16:24:40,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689913910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:40,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1034046258] [2024-11-13 16:24:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:40,482 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:24:40,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:24:40,484 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:24:40,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2024-11-13 16:25:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:22,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-13 16:25:22,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:25:22,908 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 [2024-11-13 16:25:23,168 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 16:25:23,169 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 [2024-11-13 16:25:23,240 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 [2024-11-13 16:25:23,445 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 [2024-11-13 16:25:24,835 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:25:24,835 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 [2024-11-13 16:25:25,051 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:25:25,052 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 [2024-11-13 16:25:25,203 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:25:25,204 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 [2024-11-13 16:25:25,355 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:25:25,355 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 [2024-11-13 16:25:25,389 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 [2024-11-13 16:25:25,472 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:25:25,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:25:25,598 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8343 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8343) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 16:25:25,614 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8342 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8343 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8342))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8343)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:25:25,625 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8342 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8343 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8342))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8343)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:25:25,645 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8342 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8343 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8341))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8342)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8343)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:25:25,660 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8342 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8343 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8341))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8342)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8343)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:25:26,157 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8342 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8389 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8343 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8389))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8341)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8342)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8343)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2024-11-13 16:25:26,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1034046258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:25:26,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:25:26,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2024-11-13 16:25:26,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908240562] [2024-11-13 16:25:26,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:25:26,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 16:25:26,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:25:26,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 16:25:26,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=464, Unknown=26, NotChecked=728, Total=1332 [2024-11-13 16:25:26,165 INFO L87 Difference]: Start difference. First operand 3365 states and 4351 transitions. Second operand has 22 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 22 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:25:45,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:25:45,955 INFO L93 Difference]: Finished difference Result 3366 states and 4353 transitions. [2024-11-13 16:25:45,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 16:25:45,955 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 22 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 129 [2024-11-13 16:25:45,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:25:45,959 INFO L225 Difference]: With dead ends: 3366 [2024-11-13 16:25:45,959 INFO L226 Difference]: Without dead ends: 3366 [2024-11-13 16:25:45,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=123, Invalid=503, Unknown=26, NotChecked=754, Total=1406 [2024-11-13 16:25:45,959 INFO L432 NwaCegarLoop]: 1355 mSDtfsCounter, 1607 mSDsluCounter, 8822 mSDsCounter, 0 mSdLazyCounter, 7254 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 10177 SdHoareTripleChecker+Invalid, 7272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 7254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:25:45,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 10177 Invalid, 7272 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 7254 Invalid, 0 Unknown, 0 Unchecked, 19.5s Time] [2024-11-13 16:25:45,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2024-11-13 16:25:45,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 3364. [2024-11-13 16:25:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3364 states, 2504 states have (on average 1.7140575079872205) internal successors, (4292), 3335 states have internal predecessors, (4292), 27 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-13 16:25:45,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3364 states to 3364 states and 4349 transitions. [2024-11-13 16:25:45,987 INFO L78 Accepts]: Start accepts. Automaton has 3364 states and 4349 transitions. Word has length 129 [2024-11-13 16:25:45,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:25:45,987 INFO L471 AbstractCegarLoop]: Abstraction has 3364 states and 4349 transitions. [2024-11-13 16:25:45,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 22 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:25:45,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3364 states and 4349 transitions. [2024-11-13 16:25:45,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-13 16:25:45,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:25:45,988 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:25:46,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-13 16:25:46,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (48)] Ended with exit code 0 [2024-11-13 16:25:46,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 16:25:46,389 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 16:25:46,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:25:46,389 INFO L85 PathProgramCache]: Analyzing trace with hash 442123580, now seen corresponding path program 1 times [2024-11-13 16:25:46,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:25:46,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932019304] [2024-11-13 16:25:46,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:25:46,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:25:46,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:25:46,391 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:25:46,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-13 16:25:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:47,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-13 16:25:47,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:25:47,591 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:25:47,592 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 [2024-11-13 16:25:47,600 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 [2024-11-13 16:25:47,634 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 [2024-11-13 16:25:47,649 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 [2024-11-13 16:25:47,786 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 [2024-11-13 16:25:47,791 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 [2024-11-13 16:25:48,774 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:25:48,775 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 [2024-11-13 16:25:48,781 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 [2024-11-13 16:25:48,982 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:25:48,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:25:48,989 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 [2024-11-13 16:25:49,142 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:25:49,142 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 [2024-11-13 16:25:49,162 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 [2024-11-13 16:25:49,291 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:25:49,291 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 [2024-11-13 16:25:49,307 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 [2024-11-13 16:25:49,334 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 [2024-11-13 16:25:49,343 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 [2024-11-13 16:25:49,385 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:25:49,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:25:49,650 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv20 32) .cse1) (bvadd (_ bv24 32) .cse1)))))) is different from false [2024-11-13 16:25:49,692 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse2) (bvadd (_ bv24 32) .cse2))))))) is different from false [2024-11-13 16:25:49,760 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8889))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8890) .cse0 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8890) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8889) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse3) (bvadd (_ bv24 32) .cse3)))))) is different from false [2024-11-13 16:25:49,804 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8890) (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8889) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8889))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8890) .cse3 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-13 16:25:49,870 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8887))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8888) .cse1 v_ArrVal_8890) (select (select (store .cse2 .cse1 v_ArrVal_8889) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8892))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8887))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_8889))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8888) .cse4 v_ArrVal_8890) .cse5 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-13 16:25:49,911 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8887))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8888) .cse2 v_ArrVal_8890) (select (select (store .cse3 .cse2 v_ArrVal_8889) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_8892))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8887))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_8889))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8888) .cse5 v_ArrVal_8890) .cse6 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))) is different from false [2024-11-13 16:25:51,482 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8984 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8983 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8984))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_8887))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8983) .cse1 v_ArrVal_8888) .cse2 v_ArrVal_8890) (select (select (store .cse3 .cse2 v_ArrVal_8889) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_8892))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8984 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8983 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8984))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_8887))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_8889))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8983) .cse6 v_ArrVal_8888) .cse7 v_ArrVal_8890) .cse8 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-11-13 16:25:51,490 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:25:51,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932019304] [2024-11-13 16:25:51,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932019304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:25:51,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [618946974] [2024-11-13 16:25:51,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:25:51,491 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:25:51,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:25:51,494 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:25:51,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7e5e8a-0962-48d8-95b4-dfb82f700e3f/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process