./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:08:51,994 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:08:52,080 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-23 23:08:52,093 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:08:52,094 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:08:52,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:08:52,133 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:08:52,133 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:08:52,134 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:08:52,134 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:08:52,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:08:52,135 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:08:52,135 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:08:52,135 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:08:52,136 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:08:52,136 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:08:52,136 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:08:52,137 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:08:52,137 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:08:52,137 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:08:52,138 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-23 23:08:52,138 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-23 23:08:52,138 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-23 23:08:52,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:08:52,138 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 23:08:52,138 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 23:08:52,138 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:08:52,138 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:08:52,138 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:08:52,139 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:08:52,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:08:52,139 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:08:52,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:08:52,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:08:52,139 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:08:52,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:08:52,139 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:08:52,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:08:52,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:08:52,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:08:52,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:08:52,140 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:08:52,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:08:52,140 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:08:52,140 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:08:52,140 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:08:52,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:08:52,141 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_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2024-11-23 23:08:52,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:08:52,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:08:52,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:08:52,475 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:08:52,476 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:08:52,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i [2024-11-23 23:08:55,417 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/data/bedd45889/41529d8104014f19b0eb10d0ee2521de/FLAGc6aae7358 [2024-11-23 23:08:55,800 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:08:55,800 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i [2024-11-23 23:08:55,816 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/data/bedd45889/41529d8104014f19b0eb10d0ee2521de/FLAGc6aae7358 [2024-11-23 23:08:55,990 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/data/bedd45889/41529d8104014f19b0eb10d0ee2521de [2024-11-23 23:08:55,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:08:55,995 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:08:55,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:08:55,998 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:08:56,003 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:08:56,004 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:08:55" (1/1) ... [2024-11-23 23:08:56,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7497aeec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:56, skipping insertion in model container [2024-11-23 23:08:56,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:08:55" (1/1) ... [2024-11-23 23:08:56,063 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:08:56,598 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:08:56,657 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:08:56,662 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:08:56,669 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:08:56,684 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:08:56,698 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:08:56,700 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:08:56,703 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:08:56,705 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:08:56,706 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:08:56,707 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:08:56,712 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:08:56,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:08:56,744 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) [2024-11-23 23:08:56,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d7f1104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:56, skipping insertion in model container [2024-11-23 23:08:56,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:08:56,748 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-23 23:08:56,751 INFO L158 Benchmark]: Toolchain (without parser) took 755.97ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 73.4MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-23 23:08:56,753 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:08:56,755 INFO L158 Benchmark]: CACSL2BoogieTranslator took 750.22ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 73.4MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-23 23:08:56,757 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 750.22ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 73.4MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 753]: 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_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:08:59,265 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:08:59,395 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-23 23:08:59,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:08:59,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:08:59,446 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:08:59,448 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:08:59,448 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:08:59,449 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:08:59,449 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:08:59,450 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:08:59,450 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:08:59,451 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:08:59,451 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:08:59,452 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:08:59,452 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:08:59,452 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:08:59,452 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:08:59,453 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:08:59,453 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:08:59,453 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-23 23:08:59,453 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-23 23:08:59,453 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-23 23:08:59,454 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:08:59,454 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 23:08:59,454 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-23 23:08:59,454 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-23 23:08:59,454 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 23:08:59,454 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:08:59,454 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:08:59,454 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:08:59,455 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:08:59,455 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:08:59,455 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:08:59,455 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:08:59,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:08:59,457 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:08:59,457 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:08:59,457 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:08:59,457 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:08:59,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:08:59,457 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:08:59,457 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:08:59,457 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-23 23:08:59,457 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-23 23:08:59,458 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:08:59,458 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:08:59,458 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:08:59,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:08:59,458 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_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2024-11-23 23:08:59,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:08:59,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:08:59,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:08:59,823 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:08:59,824 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:08:59,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i [2024-11-23 23:09:03,078 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/data/b551033d5/2eed63ade07948789e0850417bcc4c21/FLAG31b409f19 [2024-11-23 23:09:03,490 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:09:03,491 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i [2024-11-23 23:09:03,507 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/data/b551033d5/2eed63ade07948789e0850417bcc4c21/FLAG31b409f19 [2024-11-23 23:09:03,662 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/data/b551033d5/2eed63ade07948789e0850417bcc4c21 [2024-11-23 23:09:03,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:09:03,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:09:03,670 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:09:03,670 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:09:03,675 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:09:03,676 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:09:03" (1/1) ... [2024-11-23 23:09:03,678 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37924d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:03, skipping insertion in model container [2024-11-23 23:09:03,679 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:09:03" (1/1) ... [2024-11-23 23:09:03,741 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:09:04,299 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,353 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,360 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,373 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,385 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,411 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,413 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,416 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,418 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,420 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,421 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,427 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:09:04,450 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-23 23:09:04,467 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:09:04,509 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,531 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,538 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,546 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,562 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,586 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,591 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,594 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,600 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,601 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,602 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,611 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:09:04,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:09:04,620 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:09:04,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:09:04,801 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:09:04,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:04 WrapperNode [2024-11-23 23:09:04,802 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:09:04,803 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:09:04,803 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:09:04,803 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:09:04,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:04" (1/1) ... [2024-11-23 23:09:04,845 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:04" (1/1) ... [2024-11-23 23:09:04,892 INFO L138 Inliner]: procedures = 179, calls = 221, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 739 [2024-11-23 23:09:04,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:09:04,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:09:04,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:09:04,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:09:04,905 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:04" (1/1) ... [2024-11-23 23:09:04,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:04" (1/1) ... [2024-11-23 23:09:04,915 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:04" (1/1) ... [2024-11-23 23:09:04,997 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 50 writes are split as follows [0, 50]. [2024-11-23 23:09:04,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:04" (1/1) ... [2024-11-23 23:09:04,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:04" (1/1) ... [2024-11-23 23:09:05,057 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:04" (1/1) ... [2024-11-23 23:09:05,062 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:04" (1/1) ... [2024-11-23 23:09:05,077 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:04" (1/1) ... [2024-11-23 23:09:05,083 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:04" (1/1) ... [2024-11-23 23:09:05,086 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:04" (1/1) ... [2024-11-23 23:09:05,101 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:09:05,102 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:09:05,102 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:09:05,102 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:09:05,103 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:04" (1/1) ... [2024-11-23 23:09:05,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:09:05,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:05,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:09:05,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:09:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-23 23:09:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-23 23:09:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-23 23:09:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-23 23:09:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-23 23:09:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-23 23:09:05,186 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-23 23:09:05,186 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-23 23:09:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:09:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:09:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 23:09:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 23:09:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 23:09:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 23:09:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:09:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-23 23:09:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-23 23:09:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-23 23:09:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-23 23:09:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:09:05,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:09:05,391 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:09:05,393 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:09:05,397 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-23 23:09:05,449 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-23 23:09:09,508 INFO L? ?]: Removed 893 outVars from TransFormulas that were not future-live. [2024-11-23 23:09:09,508 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:09:09,532 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:09:09,533 INFO L312 CfgBuilder]: Removed 23 assume(true) statements. [2024-11-23 23:09:09,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:09:09 BoogieIcfgContainer [2024-11-23 23:09:09,533 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:09:09,540 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:09:09,540 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:09:09,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:09:09,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:09:03" (1/3) ... [2024-11-23 23:09:09,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ebe718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:09:09, skipping insertion in model container [2024-11-23 23:09:09,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:04" (2/3) ... [2024-11-23 23:09:09,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ebe718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:09:09, skipping insertion in model container [2024-11-23 23:09:09,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:09:09" (3/3) ... [2024-11-23 23:09:09,550 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test1-2.i [2024-11-23 23:09:09,564 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:09:09,566 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_nondet_test1-2.i that has 3 procedures, 842 locations, 1 initial locations, 25 loop locations, and 425 error locations. [2024-11-23 23:09:09,616 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:09:09,629 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;@1bab039d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:09:09,629 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2024-11-23 23:09:09,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 837 states, 410 states have (on average 2.231707317073171) internal successors, (915), 832 states have internal predecessors, (915), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:09:09,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-23 23:09:09,639 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:09,640 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 23:09:09,640 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr314REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:09:09,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:09,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1449868554, now seen corresponding path program 1 times [2024-11-23 23:09:09,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:09:09,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808805368] [2024-11-23 23:09:09,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:09,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:09,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:09,665 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:09:09,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:09:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:09,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:09:09,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:09,825 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:09:09,826 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:09:09,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808805368] [2024-11-23 23:09:09,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808805368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:09:09,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:09:09,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:09:09,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200968790] [2024-11-23 23:09:09,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:09:09,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:09:09,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:09:09,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:09:09,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:09:09,868 INFO L87 Difference]: Start difference. First operand has 837 states, 410 states have (on average 2.231707317073171) internal successors, (915), 832 states have internal predecessors, (915), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:09,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:09,948 INFO L93 Difference]: Finished difference Result 827 states and 865 transitions. [2024-11-23 23:09:09,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:09:09,951 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-23 23:09:09,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:09,963 INFO L225 Difference]: With dead ends: 827 [2024-11-23 23:09:09,963 INFO L226 Difference]: Without dead ends: 825 [2024-11-23 23:09:09,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:09:09,971 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:09,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:09:09,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2024-11-23 23:09:10,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 825. [2024-11-23 23:09:10,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 404 states have (on average 2.121287128712871) internal successors, (857), 820 states have internal predecessors, (857), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:09:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 863 transitions. [2024-11-23 23:09:10,052 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 863 transitions. Word has length 6 [2024-11-23 23:09:10,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:10,052 INFO L471 AbstractCegarLoop]: Abstraction has 825 states and 863 transitions. [2024-11-23 23:09:10,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:10,053 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 863 transitions. [2024-11-23 23:09:10,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-23 23:09:10,053 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:10,053 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 23:09:10,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:09:10,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:10,254 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:09:10,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:10,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1422103338, now seen corresponding path program 1 times [2024-11-23 23:09:10,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:09:10,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299359882] [2024-11-23 23:09:10,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:10,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:10,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:10,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:09:10,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:09:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:10,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:09:10,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:10,459 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 [2024-11-23 23:09:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:10,483 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:09:10,483 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:09:10,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299359882] [2024-11-23 23:09:10,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299359882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:09:10,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:09:10,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:09:10,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40152716] [2024-11-23 23:09:10,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:09:10,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:09:10,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:09:10,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:09:10,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:09:10,485 INFO L87 Difference]: Start difference. First operand 825 states and 863 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:12,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:12,550 INFO L93 Difference]: Finished difference Result 779 states and 818 transitions. [2024-11-23 23:09:12,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:09:12,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-23 23:09:12,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:12,554 INFO L225 Difference]: With dead ends: 779 [2024-11-23 23:09:12,554 INFO L226 Difference]: Without dead ends: 779 [2024-11-23 23:09:12,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:09:12,555 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 517 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:12,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 621 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 23:09:12,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-11-23 23:09:12,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 776. [2024-11-23 23:09:12,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 404 states have (on average 2.0) internal successors, (808), 771 states have internal predecessors, (808), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:09:12,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 814 transitions. [2024-11-23 23:09:12,583 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 814 transitions. Word has length 6 [2024-11-23 23:09:12,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:12,583 INFO L471 AbstractCegarLoop]: Abstraction has 776 states and 814 transitions. [2024-11-23 23:09:12,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:12,583 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 814 transitions. [2024-11-23 23:09:12,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-23 23:09:12,584 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:12,584 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 23:09:12,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:09:12,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:12,785 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:09:12,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:12,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1422103339, now seen corresponding path program 1 times [2024-11-23 23:09:12,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:09:12,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007496270] [2024-11-23 23:09:12,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:12,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:12,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:12,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:09:12,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:09:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:12,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:09:12,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:12,909 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 [2024-11-23 23:09:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:12,935 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:09:12,935 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:09:12,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007496270] [2024-11-23 23:09:12,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007496270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:09:12,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:09:12,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:09:12,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934706177] [2024-11-23 23:09:12,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:09:12,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:09:12,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:09:12,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:09:12,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:09:12,937 INFO L87 Difference]: Start difference. First operand 776 states and 814 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:15,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:15,075 INFO L93 Difference]: Finished difference Result 851 states and 893 transitions. [2024-11-23 23:09:15,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:09:15,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-23 23:09:15,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:15,079 INFO L225 Difference]: With dead ends: 851 [2024-11-23 23:09:15,079 INFO L226 Difference]: Without dead ends: 851 [2024-11-23 23:09:15,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:09:15,080 INFO L435 NwaCegarLoop]: 685 mSDtfsCounter, 268 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:15,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 967 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-23 23:09:15,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2024-11-23 23:09:15,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 802. [2024-11-23 23:09:15,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 441 states have (on average 1.9750566893424035) internal successors, (871), 797 states have internal predecessors, (871), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:09:15,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 877 transitions. [2024-11-23 23:09:15,104 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 877 transitions. Word has length 6 [2024-11-23 23:09:15,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:15,105 INFO L471 AbstractCegarLoop]: Abstraction has 802 states and 877 transitions. [2024-11-23 23:09:15,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:15,105 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 877 transitions. [2024-11-23 23:09:15,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-23 23:09:15,106 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:15,106 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 23:09:15,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:09:15,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:15,310 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr314REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:09:15,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:15,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1423056654, now seen corresponding path program 1 times [2024-11-23 23:09:15,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:09:15,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413293942] [2024-11-23 23:09:15,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:15,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:15,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:15,313 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:09:15,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:09:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:15,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:09:15,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:15,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:15,477 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:09:15,477 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:09:15,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413293942] [2024-11-23 23:09:15,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413293942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:09:15,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:09:15,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:09:15,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448110835] [2024-11-23 23:09:15,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:09:15,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:09:15,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:09:15,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:09:15,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:09:15,479 INFO L87 Difference]: Start difference. First operand 802 states and 877 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:16,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:16,380 INFO L93 Difference]: Finished difference Result 1114 states and 1231 transitions. [2024-11-23 23:09:16,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:09:16,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-23 23:09:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:16,386 INFO L225 Difference]: With dead ends: 1114 [2024-11-23 23:09:16,386 INFO L226 Difference]: Without dead ends: 1114 [2024-11-23 23:09:16,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:09:16,387 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 332 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:16,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 2361 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:09:16,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2024-11-23 23:09:16,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 895. [2024-11-23 23:09:16,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 534 states have (on average 1.9176029962546817) internal successors, (1024), 890 states have internal predecessors, (1024), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:09:16,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1030 transitions. [2024-11-23 23:09:16,412 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1030 transitions. Word has length 6 [2024-11-23 23:09:16,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:16,413 INFO L471 AbstractCegarLoop]: Abstraction has 895 states and 1030 transitions. [2024-11-23 23:09:16,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:16,413 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1030 transitions. [2024-11-23 23:09:16,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-23 23:09:16,414 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:16,414 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:09:16,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:09:16,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:16,619 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr318ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:09:16,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:16,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1338307067, now seen corresponding path program 1 times [2024-11-23 23:09:16,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:09:16,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609514411] [2024-11-23 23:09:16,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:16,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:16,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:16,624 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:09:16,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:09:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:16,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:09:16,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:16,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:16,755 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:09:16,756 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:09:16,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609514411] [2024-11-23 23:09:16,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609514411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:09:16,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:09:16,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:09:16,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536874597] [2024-11-23 23:09:16,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:09:16,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:09:16,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:09:16,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:09:16,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:09:16,758 INFO L87 Difference]: Start difference. First operand 895 states and 1030 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:16,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:16,798 INFO L93 Difference]: Finished difference Result 895 states and 1029 transitions. [2024-11-23 23:09:16,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:09:16,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-23 23:09:16,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:16,803 INFO L225 Difference]: With dead ends: 895 [2024-11-23 23:09:16,803 INFO L226 Difference]: Without dead ends: 895 [2024-11-23 23:09:16,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:09:16,804 INFO L435 NwaCegarLoop]: 800 mSDtfsCounter, 8 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:16,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2396 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:09:16,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2024-11-23 23:09:16,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2024-11-23 23:09:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 534 states have (on average 1.9157303370786516) internal successors, (1023), 890 states have internal predecessors, (1023), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:09:16,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1029 transitions. [2024-11-23 23:09:16,838 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1029 transitions. Word has length 9 [2024-11-23 23:09:16,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:16,838 INFO L471 AbstractCegarLoop]: Abstraction has 895 states and 1029 transitions. [2024-11-23 23:09:16,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:16,839 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1029 transitions. [2024-11-23 23:09:16,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-23 23:09:16,840 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:16,840 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:09:16,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 23:09:17,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:17,044 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr424ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:09:17,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:17,045 INFO L85 PathProgramCache]: Analyzing trace with hash 914551586, now seen corresponding path program 1 times [2024-11-23 23:09:17,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:09:17,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344351818] [2024-11-23 23:09:17,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:17,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:17,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:17,048 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:09:17,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:09:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:17,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 23:09:17,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:17,216 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:09:17,216 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:09:17,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344351818] [2024-11-23 23:09:17,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344351818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:09:17,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:09:17,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:09:17,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831111585] [2024-11-23 23:09:17,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:09:17,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:09:17,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:09:17,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:09:17,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:09:17,218 INFO L87 Difference]: Start difference. First operand 895 states and 1029 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2024-11-23 23:09:18,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:18,511 INFO L93 Difference]: Finished difference Result 897 states and 1030 transitions. [2024-11-23 23:09:18,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:09:18,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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 [2024-11-23 23:09:18,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:18,514 INFO L225 Difference]: With dead ends: 897 [2024-11-23 23:09:18,514 INFO L226 Difference]: Without dead ends: 887 [2024-11-23 23:09:18,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:09:18,515 INFO L435 NwaCegarLoop]: 802 mSDtfsCounter, 1 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:18,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1235 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:09:18,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-11-23 23:09:18,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 887. [2024-11-23 23:09:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 526 states have (on average 1.9277566539923954) internal successors, (1014), 882 states have internal predecessors, (1014), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:09:18,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1020 transitions. [2024-11-23 23:09:18,535 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1020 transitions. Word has length 13 [2024-11-23 23:09:18,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:18,535 INFO L471 AbstractCegarLoop]: Abstraction has 887 states and 1020 transitions. [2024-11-23 23:09:18,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2024-11-23 23:09:18,535 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1020 transitions. [2024-11-23 23:09:18,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-23 23:09:18,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:18,536 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:09:18,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:09:18,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:18,737 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:09:18,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:18,737 INFO L85 PathProgramCache]: Analyzing trace with hash 247711511, now seen corresponding path program 1 times [2024-11-23 23:09:18,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:09:18,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290443986] [2024-11-23 23:09:18,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:18,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:18,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:18,739 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:09:18,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:09:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:18,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:09:18,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:18,875 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 [2024-11-23 23:09:18,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:18,938 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:09:18,938 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:09:18,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290443986] [2024-11-23 23:09:18,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290443986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:09:18,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:09:18,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:09:18,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848396377] [2024-11-23 23:09:18,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:09:18,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:09:18,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:09:18,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:09:18,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:09:18,940 INFO L87 Difference]: Start difference. First operand 887 states and 1020 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:21,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:21,499 INFO L93 Difference]: Finished difference Result 872 states and 982 transitions. [2024-11-23 23:09:21,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:09:21,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-23 23:09:21,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:21,504 INFO L225 Difference]: With dead ends: 872 [2024-11-23 23:09:21,504 INFO L226 Difference]: Without dead ends: 872 [2024-11-23 23:09:21,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:09:21,506 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 564 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:21,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 906 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-23 23:09:21,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2024-11-23 23:09:21,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 864. [2024-11-23 23:09:21,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 526 states have (on average 1.8403041825095057) internal successors, (968), 859 states have internal predecessors, (968), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:09:21,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 974 transitions. [2024-11-23 23:09:21,532 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 974 transitions. Word has length 16 [2024-11-23 23:09:21,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:21,532 INFO L471 AbstractCegarLoop]: Abstraction has 864 states and 974 transitions. [2024-11-23 23:09:21,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:21,533 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 974 transitions. [2024-11-23 23:09:21,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-23 23:09:21,534 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:21,534 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:09:21,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:09:21,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:21,735 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:09:21,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:21,736 INFO L85 PathProgramCache]: Analyzing trace with hash 247711512, now seen corresponding path program 1 times [2024-11-23 23:09:21,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:09:21,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857694138] [2024-11-23 23:09:21,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:21,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:21,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:21,740 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:09:21,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:09:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:21,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:09:21,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:21,917 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 [2024-11-23 23:09:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:22,110 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:09:22,110 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:09:22,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857694138] [2024-11-23 23:09:22,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857694138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:09:22,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:09:22,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:09:22,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946683790] [2024-11-23 23:09:22,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:09:22,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:09:22,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:09:22,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:09:22,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:09:22,113 INFO L87 Difference]: Start difference. First operand 864 states and 974 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:25,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:25,525 INFO L93 Difference]: Finished difference Result 1045 states and 1146 transitions. [2024-11-23 23:09:25,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:09:25,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-23 23:09:25,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:25,528 INFO L225 Difference]: With dead ends: 1045 [2024-11-23 23:09:25,528 INFO L226 Difference]: Without dead ends: 1045 [2024-11-23 23:09:25,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:09:25,531 INFO L435 NwaCegarLoop]: 747 mSDtfsCounter, 389 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:25,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 1454 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-23 23:09:25,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2024-11-23 23:09:25,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 980. [2024-11-23 23:09:25,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 642 states have (on average 1.7258566978193146) internal successors, (1108), 975 states have internal predecessors, (1108), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:09:25,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1114 transitions. [2024-11-23 23:09:25,566 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1114 transitions. Word has length 16 [2024-11-23 23:09:25,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:25,566 INFO L471 AbstractCegarLoop]: Abstraction has 980 states and 1114 transitions. [2024-11-23 23:09:25,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:25,567 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1114 transitions. [2024-11-23 23:09:25,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-23 23:09:25,568 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:25,568 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:09:25,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 23:09:25,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:25,768 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:09:25,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:25,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1598816529, now seen corresponding path program 1 times [2024-11-23 23:09:25,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:09:25,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191496238] [2024-11-23 23:09:25,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:25,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:25,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:25,773 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:09:25,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:09:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:25,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:09:25,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:26,007 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 [2024-11-23 23:09:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:26,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:09:27,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:27,219 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:09:27,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191496238] [2024-11-23 23:09:27,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191496238] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:09:27,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:09:27,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-23 23:09:27,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305424291] [2024-11-23 23:09:27,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:09:27,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:09:27,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:09:27,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:09:27,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:09:27,223 INFO L87 Difference]: Start difference. First operand 980 states and 1114 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:35,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:35,763 INFO L93 Difference]: Finished difference Result 1407 states and 1642 transitions. [2024-11-23 23:09:35,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:09:35,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 35 [2024-11-23 23:09:35,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:35,772 INFO L225 Difference]: With dead ends: 1407 [2024-11-23 23:09:35,772 INFO L226 Difference]: Without dead ends: 1407 [2024-11-23 23:09:35,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:09:35,774 INFO L435 NwaCegarLoop]: 775 mSDtfsCounter, 1524 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:35,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 2375 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-23 23:09:35,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2024-11-23 23:09:35,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1146. [2024-11-23 23:09:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 808 states have (on average 1.6608910891089108) internal successors, (1342), 1141 states have internal predecessors, (1342), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:09:35,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1348 transitions. [2024-11-23 23:09:35,806 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1348 transitions. Word has length 35 [2024-11-23 23:09:35,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:35,806 INFO L471 AbstractCegarLoop]: Abstraction has 1146 states and 1348 transitions. [2024-11-23 23:09:35,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:35,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1348 transitions. [2024-11-23 23:09:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-23 23:09:35,808 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:35,808 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:09:35,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-23 23:09:36,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:36,013 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:09:36,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:36,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1225572340, now seen corresponding path program 1 times [2024-11-23 23:09:36,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:09:36,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131044292] [2024-11-23 23:09:36,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:36,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:36,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:36,016 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:09:36,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:09:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:36,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:09:36,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:36,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:36,269 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:09:36,269 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:09:36,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131044292] [2024-11-23 23:09:36,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131044292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:09:36,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:09:36,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:09:36,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579257552] [2024-11-23 23:09:36,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:09:36,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:09:36,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:09:36,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:09:36,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:09:36,271 INFO L87 Difference]: Start difference. First operand 1146 states and 1348 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:36,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:36,375 INFO L93 Difference]: Finished difference Result 831 states and 908 transitions. [2024-11-23 23:09:36,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:09:36,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-11-23 23:09:36,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:36,378 INFO L225 Difference]: With dead ends: 831 [2024-11-23 23:09:36,379 INFO L226 Difference]: Without dead ends: 831 [2024-11-23 23:09:36,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:09:36,379 INFO L435 NwaCegarLoop]: 718 mSDtfsCounter, 56 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:36,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2081 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:09:36,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2024-11-23 23:09:36,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 829. [2024-11-23 23:09:36,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 514 states have (on average 1.7509727626459144) internal successors, (900), 824 states have internal predecessors, (900), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:09:36,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 906 transitions. [2024-11-23 23:09:36,396 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 906 transitions. Word has length 51 [2024-11-23 23:09:36,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:36,396 INFO L471 AbstractCegarLoop]: Abstraction has 829 states and 906 transitions. [2024-11-23 23:09:36,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:36,397 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 906 transitions. [2024-11-23 23:09:36,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-23 23:09:36,398 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:36,398 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:09:36,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 23:09:36,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:36,598 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:09:36,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:36,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1544369320, now seen corresponding path program 1 times [2024-11-23 23:09:36,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:09:36,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634358139] [2024-11-23 23:09:36,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:36,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:36,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:36,602 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:09:36,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:09:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:36,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:09:36,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:36,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 23:09:37,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:09:37,545 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 [2024-11-23 23:09:37,569 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:09:37,569 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 [2024-11-23 23:09:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:37,578 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:09:37,578 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:09:37,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634358139] [2024-11-23 23:09:37,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634358139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:09:37,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:09:37,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:09:37,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889535569] [2024-11-23 23:09:37,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:09:37,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:09:37,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:09:37,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:09:37,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:09:37,580 INFO L87 Difference]: Start difference. First operand 829 states and 906 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:40,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:40,142 INFO L93 Difference]: Finished difference Result 791 states and 868 transitions. [2024-11-23 23:09:40,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:09:40,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2024-11-23 23:09:40,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:40,166 INFO L225 Difference]: With dead ends: 791 [2024-11-23 23:09:40,166 INFO L226 Difference]: Without dead ends: 791 [2024-11-23 23:09:40,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:09:40,167 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 456 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:40,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 675 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-23 23:09:40,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-11-23 23:09:40,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 754. [2024-11-23 23:09:40,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 477 states have (on average 1.6519916142557651) internal successors, (788), 749 states have internal predecessors, (788), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:09:40,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 794 transitions. [2024-11-23 23:09:40,202 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 794 transitions. Word has length 59 [2024-11-23 23:09:40,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:40,203 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 794 transitions. [2024-11-23 23:09:40,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:40,203 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 794 transitions. [2024-11-23 23:09:40,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 23:09:40,208 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:40,208 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:09:40,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 23:09:40,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:40,409 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr69REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:09:40,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:40,410 INFO L85 PathProgramCache]: Analyzing trace with hash 213920600, now seen corresponding path program 1 times [2024-11-23 23:09:40,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:09:40,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097882127] [2024-11-23 23:09:40,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:40,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:40,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:40,418 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:09:40,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 23:09:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:40,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 23:09:40,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:40,706 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 [2024-11-23 23:09:40,736 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 [2024-11-23 23:09:40,750 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 [2024-11-23 23:09:40,825 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 [2024-11-23 23:09:40,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:40,853 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:09:40,853 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:09:40,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097882127] [2024-11-23 23:09:40,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097882127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:09:40,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:09:40,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:09:40,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42556855] [2024-11-23 23:09:40,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:09:40,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:09:40,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:09:40,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:09:40,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:09:40,855 INFO L87 Difference]: Start difference. First operand 754 states and 794 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:43,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:43,751 INFO L93 Difference]: Finished difference Result 753 states and 793 transitions. [2024-11-23 23:09:43,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:09:43,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-23 23:09:43,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:43,755 INFO L225 Difference]: With dead ends: 753 [2024-11-23 23:09:43,755 INFO L226 Difference]: Without dead ends: 753 [2024-11-23 23:09:43,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:09:43,758 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 2 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:43,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1768 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-23 23:09:43,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-11-23 23:09:43,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2024-11-23 23:09:43,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 477 states have (on average 1.649895178197065) internal successors, (787), 748 states have internal predecessors, (787), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:09:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 793 transitions. [2024-11-23 23:09:43,773 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 793 transitions. Word has length 64 [2024-11-23 23:09:43,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:43,773 INFO L471 AbstractCegarLoop]: Abstraction has 753 states and 793 transitions. [2024-11-23 23:09:43,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:43,774 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 793 transitions. [2024-11-23 23:09:43,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 23:09:43,778 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:43,779 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:09:43,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 23:09:43,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:43,983 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr68REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:09:43,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:43,983 INFO L85 PathProgramCache]: Analyzing trace with hash 213920599, now seen corresponding path program 1 times [2024-11-23 23:09:43,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:09:43,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075077363] [2024-11-23 23:09:43,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:43,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:43,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:43,986 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:09:43,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 23:09:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:44,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:09:44,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:44,237 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 [2024-11-23 23:09:44,251 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 [2024-11-23 23:09:44,284 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 [2024-11-23 23:09:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:44,299 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:09:44,299 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:09:44,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075077363] [2024-11-23 23:09:44,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075077363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:09:44,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:09:44,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:09:44,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810243774] [2024-11-23 23:09:44,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:09:44,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:09:44,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:09:44,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:09:44,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:09:44,300 INFO L87 Difference]: Start difference. First operand 753 states and 793 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:46,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:46,496 INFO L93 Difference]: Finished difference Result 752 states and 792 transitions. [2024-11-23 23:09:46,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:09:46,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-23 23:09:46,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:46,499 INFO L225 Difference]: With dead ends: 752 [2024-11-23 23:09:46,500 INFO L226 Difference]: Without dead ends: 752 [2024-11-23 23:09:46,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:09:46,501 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 1 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:46,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1743 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 23:09:46,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2024-11-23 23:09:46,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2024-11-23 23:09:46,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 476 states have (on average 1.6512605042016806) internal successors, (786), 747 states have internal predecessors, (786), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:09:46,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 792 transitions. [2024-11-23 23:09:46,514 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 792 transitions. Word has length 64 [2024-11-23 23:09:46,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:46,515 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 792 transitions. [2024-11-23 23:09:46,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:09:46,515 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 792 transitions. [2024-11-23 23:09:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-23 23:09:46,518 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:46,518 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:09:46,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-23 23:09:46,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:46,719 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:09:46,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:46,719 INFO L85 PathProgramCache]: Analyzing trace with hash -113414210, now seen corresponding path program 1 times [2024-11-23 23:09:46,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:09:46,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531831531] [2024-11-23 23:09:46,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:46,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:46,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:46,722 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:09:46,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 23:09:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:46,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 23:09:46,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:46,968 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 [2024-11-23 23:09:47,069 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 [2024-11-23 23:09:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:47,089 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:09:47,089 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:09:47,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531831531] [2024-11-23 23:09:47,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531831531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:09:47,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:09:47,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:09:47,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075035211] [2024-11-23 23:09:47,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:09:47,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:09:47,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:09:47,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:09:47,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:09:47,092 INFO L87 Difference]: Start difference. First operand 752 states and 792 transitions. Second operand has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-11-23 23:09:49,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:49,781 INFO L93 Difference]: Finished difference Result 764 states and 807 transitions. [2024-11-23 23:09:49,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:09:49,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 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 72 [2024-11-23 23:09:49,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:49,785 INFO L225 Difference]: With dead ends: 764 [2024-11-23 23:09:49,785 INFO L226 Difference]: Without dead ends: 764 [2024-11-23 23:09:49,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:09:49,786 INFO L435 NwaCegarLoop]: 683 mSDtfsCounter, 6 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:49,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2438 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-23 23:09:49,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2024-11-23 23:09:49,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 758. [2024-11-23 23:09:49,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 481 states have (on average 1.6486486486486487) internal successors, (793), 752 states have internal predecessors, (793), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-23 23:09:49,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 802 transitions. [2024-11-23 23:09:49,801 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 802 transitions. Word has length 72 [2024-11-23 23:09:49,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:49,802 INFO L471 AbstractCegarLoop]: Abstraction has 758 states and 802 transitions. [2024-11-23 23:09:49,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-11-23 23:09:49,802 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 802 transitions. [2024-11-23 23:09:49,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-23 23:09:49,803 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:49,803 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:09:49,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-23 23:09:50,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:50,004 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:09:50,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:50,004 INFO L85 PathProgramCache]: Analyzing trace with hash -113414209, now seen corresponding path program 1 times [2024-11-23 23:09:50,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:09:50,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775617496] [2024-11-23 23:09:50,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:50,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:50,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:50,006 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:09:50,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 23:09:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:50,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:09:50,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:50,263 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:09:50,263 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:09:50,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775617496] [2024-11-23 23:09:50,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775617496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:09:50,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:09:50,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:09:50,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702668598] [2024-11-23 23:09:50,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:09:50,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:09:50,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:09:50,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:09:50,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:09:50,265 INFO L87 Difference]: Start difference. First operand 758 states and 802 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-23 23:09:50,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:50,317 INFO L93 Difference]: Finished difference Result 755 states and 796 transitions. [2024-11-23 23:09:50,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:09:50,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 72 [2024-11-23 23:09:50,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:50,321 INFO L225 Difference]: With dead ends: 755 [2024-11-23 23:09:50,321 INFO L226 Difference]: Without dead ends: 755 [2024-11-23 23:09:50,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:09:50,322 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 0 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:50,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2068 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:09:50,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-11-23 23:09:50,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 755. [2024-11-23 23:09:50,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 478 states have (on average 1.6506276150627615) internal successors, (789), 750 states have internal predecessors, (789), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 23:09:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 796 transitions. [2024-11-23 23:09:50,336 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 796 transitions. Word has length 72 [2024-11-23 23:09:50,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:50,337 INFO L471 AbstractCegarLoop]: Abstraction has 755 states and 796 transitions. [2024-11-23 23:09:50,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-23 23:09:50,337 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 796 transitions. [2024-11-23 23:09:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-23 23:09:50,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:50,338 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:09:50,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-23 23:09:50,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:50,539 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:09:50,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:50,539 INFO L85 PathProgramCache]: Analyzing trace with hash 2129670047, now seen corresponding path program 1 times [2024-11-23 23:09:50,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:09:50,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152645597] [2024-11-23 23:09:50,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:50,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:50,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:50,541 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:09:50,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 23:09:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:50,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:09:50,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:50,837 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:09:50,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:09:50,920 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:09:50,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152645597] [2024-11-23 23:09:50,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152645597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:09:50,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:09:50,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-23 23:09:50,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715941961] [2024-11-23 23:09:50,921 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:09:50,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:09:50,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:09:50,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:09:50,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:09:50,922 INFO L87 Difference]: Start difference. First operand 755 states and 796 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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) [2024-11-23 23:09:51,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:51,104 INFO L93 Difference]: Finished difference Result 767 states and 813 transitions. [2024-11-23 23:09:51,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:09:51,105 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 73 [2024-11-23 23:09:51,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:51,108 INFO L225 Difference]: With dead ends: 767 [2024-11-23 23:09:51,108 INFO L226 Difference]: Without dead ends: 767 [2024-11-23 23:09:51,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:09:51,109 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 6 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:51,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2071 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:09:51,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2024-11-23 23:09:51,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 765. [2024-11-23 23:09:51,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 487 states have (on average 1.6509240246406571) internal successors, (804), 759 states have internal predecessors, (804), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 23:09:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 811 transitions. [2024-11-23 23:09:51,123 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 811 transitions. Word has length 73 [2024-11-23 23:09:51,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:51,123 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 811 transitions. [2024-11-23 23:09:51,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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) [2024-11-23 23:09:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 811 transitions. [2024-11-23 23:09:51,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-23 23:09:51,124 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:51,124 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:09:51,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-23 23:09:51,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:51,325 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:09:51,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:51,325 INFO L85 PathProgramCache]: Analyzing trace with hash 803135486, now seen corresponding path program 2 times [2024-11-23 23:09:51,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:09:51,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916640437] [2024-11-23 23:09:51,326 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:09:51,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:09:51,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:51,328 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:09:51,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-23 23:10:02,901 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:10:02,901 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:10:02,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-23 23:10:02,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:10:03,056 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:10:03,056 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 [2024-11-23 23:10:03,076 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 [2024-11-23 23:10:03,278 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:10:03,279 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 [2024-11-23 23:10:03,334 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 33 treesize of output 15 [2024-11-23 23:10:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:10:03,360 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:10:03,478 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-23 23:10:03,478 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 [2024-11-23 23:10:03,490 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_850 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_850) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2024-11-23 23:10:03,494 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:10:03,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916640437] [2024-11-23 23:10:03,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916640437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:10:03,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1962803695] [2024-11-23 23:10:03,494 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:10:03,494 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:10:03,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:10:03,496 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:10:03,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-23 23:10:04,446 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:10:04,446 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:10:04,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:10:04,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:10:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:10:04,671 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:10:05,009 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:10:05,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1962803695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:10:05,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:10:05,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-11-23 23:10:05,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542578627] [2024-11-23 23:10:05,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:10:05,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-23 23:10:05,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:10:05,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-23 23:10:05,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2024-11-23 23:10:05,011 INFO L87 Difference]: Start difference. First operand 765 states and 811 transitions. Second operand has 24 states, 23 states have (on average 6.086956521739131) internal successors, (140), 23 states have internal predecessors, (140), 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) [2024-11-23 23:10:15,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:10:15,609 INFO L93 Difference]: Finished difference Result 781 states and 834 transitions. [2024-11-23 23:10:15,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-23 23:10:15,610 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.086956521739131) internal successors, (140), 23 states have internal predecessors, (140), 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 76 [2024-11-23 23:10:15,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:10:15,612 INFO L225 Difference]: With dead ends: 781 [2024-11-23 23:10:15,612 INFO L226 Difference]: Without dead ends: 777 [2024-11-23 23:10:15,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=413, Invalid=2242, Unknown=1, NotChecked=100, Total=2756 [2024-11-23 23:10:15,614 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 467 mSDsluCounter, 6127 mSDsCounter, 0 mSdLazyCounter, 4277 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 6589 SdHoareTripleChecker+Invalid, 4295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:10:15,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 6589 Invalid, 4295 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 4277 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2024-11-23 23:10:15,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-11-23 23:10:15,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 773. [2024-11-23 23:10:15,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 496 states have (on average 1.6431451612903225) internal successors, (815), 767 states have internal predecessors, (815), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 23:10:15,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 822 transitions. [2024-11-23 23:10:15,631 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 822 transitions. Word has length 76 [2024-11-23 23:10:15,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:10:15,631 INFO L471 AbstractCegarLoop]: Abstraction has 773 states and 822 transitions. [2024-11-23 23:10:15,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.086956521739131) internal successors, (140), 23 states have internal predecessors, (140), 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) [2024-11-23 23:10:15,632 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 822 transitions. [2024-11-23 23:10:15,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-23 23:10:15,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:10:15,632 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:10:15,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-23 23:10:15,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-11-23 23:10:16,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 23:10:16,033 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:10:16,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:10:16,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1325921185, now seen corresponding path program 1 times [2024-11-23 23:10:16,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:10:16,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421550298] [2024-11-23 23:10:16,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:10:16,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:10:16,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:10:16,037 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:10:16,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-23 23:10:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:10:16,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 23:10:16,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:10:16,774 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:10:16,774 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:10:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:10:17,683 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:10:17,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421550298] [2024-11-23 23:10:17,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421550298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:10:17,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:10:17,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-23 23:10:17,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619183414] [2024-11-23 23:10:17,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:10:17,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-23 23:10:17,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:10:17,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-23 23:10:17,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-23 23:10:17,686 INFO L87 Difference]: Start difference. First operand 773 states and 822 transitions. Second operand has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 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) [2024-11-23 23:10:20,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:10:20,353 INFO L93 Difference]: Finished difference Result 797 states and 861 transitions. [2024-11-23 23:10:20,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-23 23:10:20,354 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 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 82 [2024-11-23 23:10:20,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:10:20,357 INFO L225 Difference]: With dead ends: 797 [2024-11-23 23:10:20,357 INFO L226 Difference]: Without dead ends: 791 [2024-11-23 23:10:20,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-23 23:10:20,362 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 18 mSDsluCounter, 10308 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 10999 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:10:20,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 10999 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 23:10:20,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-11-23 23:10:20,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 791. [2024-11-23 23:10:20,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 514 states have (on average 1.6303501945525292) internal successors, (838), 785 states have internal predecessors, (838), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 23:10:20,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 845 transitions. [2024-11-23 23:10:20,377 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 845 transitions. Word has length 82 [2024-11-23 23:10:20,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:10:20,377 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 845 transitions. [2024-11-23 23:10:20,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 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) [2024-11-23 23:10:20,377 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 845 transitions. [2024-11-23 23:10:20,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-23 23:10:20,378 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:10:20,378 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:10:20,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-23 23:10:20,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:10:20,582 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:10:20,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:10:20,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1034947871, now seen corresponding path program 2 times [2024-11-23 23:10:20,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:10:20,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041553610] [2024-11-23 23:10:20,584 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:10:20,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:10:20,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:10:20,586 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:10:20,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-23 23:10:34,303 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:10:34,304 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:10:34,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-23 23:10:34,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:10:34,457 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 [2024-11-23 23:10:34,474 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:10:34,475 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 [2024-11-23 23:10:34,522 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 [2024-11-23 23:10:34,540 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 [2024-11-23 23:10:34,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-23 23:10:34,702 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 [2024-11-23 23:10:35,337 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:10:35,337 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 [2024-11-23 23:10:35,357 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 [2024-11-23 23:10:35,422 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 [2024-11-23 23:10:35,433 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 [2024-11-23 23:10:35,469 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-23 23:10:35,469 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:10:36,252 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:10:36,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041553610] [2024-11-23 23:10:36,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041553610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:10:36,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [128061529] [2024-11-23 23:10:36,253 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:10:36,253 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:10:36,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:10:36,255 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:10:36,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-23 23:10:37,503 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:10:37,503 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:10:37,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 23:10:37,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:10:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:10:38,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:10:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:10:41,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [128061529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:10:41,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:10:41,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2024-11-23 23:10:41,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113141969] [2024-11-23 23:10:41,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:10:41,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-23 23:10:41,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:10:41,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-23 23:10:41,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=2954, Unknown=6, NotChecked=0, Total=3660 [2024-11-23 23:10:41,952 INFO L87 Difference]: Start difference. First operand 791 states and 845 transitions. Second operand has 58 states, 57 states have (on average 3.087719298245614) internal successors, (176), 58 states have internal predecessors, (176), 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) [2024-11-23 23:11:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:15,754 INFO L93 Difference]: Finished difference Result 834 states and 918 transitions. [2024-11-23 23:11:15,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-23 23:11:15,755 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.087719298245614) internal successors, (176), 58 states have internal predecessors, (176), 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 94 [2024-11-23 23:11:15,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:15,758 INFO L225 Difference]: With dead ends: 834 [2024-11-23 23:11:15,758 INFO L226 Difference]: Without dead ends: 826 [2024-11-23 23:11:15,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3140 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=3108, Invalid=15246, Unknown=6, NotChecked=0, Total=18360 [2024-11-23 23:11:15,762 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 483 mSDsluCounter, 12419 mSDsCounter, 0 mSdLazyCounter, 10423 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 12881 SdHoareTripleChecker+Invalid, 10463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 10423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:15,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 12881 Invalid, 10463 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 10423 Invalid, 0 Unknown, 0 Unchecked, 23.7s Time] [2024-11-23 23:11:15,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2024-11-23 23:11:15,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 824. [2024-11-23 23:11:15,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 548 states have (on average 1.604014598540146) internal successors, (879), 818 states have internal predecessors, (879), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 23:11:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 886 transitions. [2024-11-23 23:11:15,777 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 886 transitions. Word has length 94 [2024-11-23 23:11:15,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:15,777 INFO L471 AbstractCegarLoop]: Abstraction has 824 states and 886 transitions. [2024-11-23 23:11:15,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.087719298245614) internal successors, (176), 58 states have internal predecessors, (176), 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) [2024-11-23 23:11:15,778 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 886 transitions. [2024-11-23 23:11:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-23 23:11:15,779 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:15,779 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:15,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-23 23:11:15,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2024-11-23 23:11:16,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 23:11:16,180 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:11:16,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:16,180 INFO L85 PathProgramCache]: Analyzing trace with hash -476960561, now seen corresponding path program 1 times [2024-11-23 23:11:16,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:11:16,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113719860] [2024-11-23 23:11:16,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:16,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:11:16,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:11:16,183 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:11:16,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-23 23:11:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:16,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-23 23:11:16,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:11:16,789 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:11:16,789 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 [2024-11-23 23:11:16,810 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 [2024-11-23 23:11:17,457 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:11:17,457 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 [2024-11-23 23:11:17,590 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:11:17,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-23 23:11:17,628 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 [2024-11-23 23:11:17,654 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:11:17,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:11:17,749 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2051 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2051) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-23 23:11:18,203 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-23 23:11:18,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2024-11-23 23:11:18,215 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2051 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2097))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2051)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-23 23:11:18,217 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:11:18,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113719860] [2024-11-23 23:11:18,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113719860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:11:18,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1294521607] [2024-11-23 23:11:18,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:18,218 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:11:18,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:11:18,220 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:11:18,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2024-11-23 23:11:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:20,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-23 23:11:20,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:11:20,998 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-23 23:11:20,999 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 14 treesize of output 20 [2024-11-23 23:11:21,513 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-23 23:11:21,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-11-23 23:11:21,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2024-11-23 23:11:21,936 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 34 treesize of output 16 [2024-11-23 23:11:23,511 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:11:23,512 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 54 treesize of output 51 [2024-11-23 23:11:23,775 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:11:23,775 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 54 treesize of output 51 [2024-11-23 23:11:23,811 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 43 treesize of output 19 [2024-11-23 23:11:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:11:23,886 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:11:24,434 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2051 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2550 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2550))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2051)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:11:24,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1294521607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:11:24,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:11:24,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 21 [2024-11-23 23:11:24,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60868339] [2024-11-23 23:11:24,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:11:24,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:11:24,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:11:24,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:11:24,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=459, Unknown=10, NotChecked=138, Total=702 [2024-11-23 23:11:24,440 INFO L87 Difference]: Start difference. First operand 824 states and 886 transitions. Second operand has 22 states, 19 states have (on average 7.894736842105263) internal successors, (150), 21 states have internal predecessors, (150), 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) [2024-11-23 23:11:35,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:35,432 INFO L93 Difference]: Finished difference Result 1500 states and 1614 transitions. [2024-11-23 23:11:35,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-23 23:11:35,433 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 7.894736842105263) internal successors, (150), 21 states have internal predecessors, (150), 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 119 [2024-11-23 23:11:35,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:35,437 INFO L225 Difference]: With dead ends: 1500 [2024-11-23 23:11:35,438 INFO L226 Difference]: Without dead ends: 1500 [2024-11-23 23:11:35,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=215, Invalid=1265, Unknown=14, NotChecked=228, Total=1722 [2024-11-23 23:11:35,439 INFO L435 NwaCegarLoop]: 368 mSDtfsCounter, 1038 mSDsluCounter, 4663 mSDsCounter, 0 mSdLazyCounter, 5059 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 5031 SdHoareTripleChecker+Invalid, 5079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 5059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:35,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 5031 Invalid, 5079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 5059 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2024-11-23 23:11:35,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2024-11-23 23:11:35,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 823. [2024-11-23 23:11:35,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 548 states have (on average 1.602189781021898) internal successors, (878), 817 states have internal predecessors, (878), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 23:11:35,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 885 transitions. [2024-11-23 23:11:35,457 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 885 transitions. Word has length 119 [2024-11-23 23:11:35,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:35,457 INFO L471 AbstractCegarLoop]: Abstraction has 823 states and 885 transitions. [2024-11-23 23:11:35,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 7.894736842105263) internal successors, (150), 21 states have internal predecessors, (150), 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) [2024-11-23 23:11:35,457 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 885 transitions. [2024-11-23 23:11:35,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-23 23:11:35,458 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:35,459 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:35,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2024-11-23 23:11:35,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-23 23:11:35,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:11:35,859 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:11:35,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:35,860 INFO L85 PathProgramCache]: Analyzing trace with hash -476960560, now seen corresponding path program 1 times [2024-11-23 23:11:35,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:11:35,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115553951] [2024-11-23 23:11:35,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:35,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:11:35,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:11:35,862 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:11:35,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-23 23:11:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:36,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-23 23:11:36,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:11:36,519 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:11:36,519 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 13 treesize of output 13 [2024-11-23 23:11:36,526 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 [2024-11-23 23:11:36,554 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 [2024-11-23 23:11:36,563 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 [2024-11-23 23:11:36,676 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 [2024-11-23 23:11:36,696 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 [2024-11-23 23:11:37,519 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:11:37,520 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 [2024-11-23 23:11:37,535 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 [2024-11-23 23:11:37,650 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:11:37,650 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 [2024-11-23 23:11:37,658 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 [2024-11-23 23:11:37,683 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 [2024-11-23 23:11:37,704 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 [2024-11-23 23:11:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:11:37,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:11:37,874 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3001 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3001) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_3002 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3001 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3001) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3002) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:11:37,900 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_3002 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3001 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3001) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3002) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_3001 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3001) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2024-11-23 23:11:39,357 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3093 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3094 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3001 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3094) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3093) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3001) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_3093 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3094 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3002 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3001 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3093))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3094) .cse2 v_ArrVal_3001) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_3002) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-23 23:11:39,365 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:11:39,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115553951] [2024-11-23 23:11:39,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115553951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:11:39,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [141976618] [2024-11-23 23:11:39,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:39,365 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:11:39,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:11:39,367 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:11:39,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-23 23:11:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:42,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-23 23:11:42,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:11:42,340 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 [2024-11-23 23:11:42,515 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:11:42,515 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 [2024-11-23 23:11:42,523 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 [2024-11-23 23:11:42,541 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 [2024-11-23 23:11:42,552 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 [2024-11-23 23:11:42,631 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 [2024-11-23 23:11:42,638 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 [2024-11-23 23:11:43,396 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:11:43,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-23 23:11:43,408 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 [2024-11-23 23:11:43,494 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:11:43,494 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 [2024-11-23 23:11:43,502 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 [2024-11-23 23:11:43,527 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 [2024-11-23 23:11:43,534 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 [2024-11-23 23:11:43,537 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:11:43,537 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:11:43,599 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3546 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3546) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3547 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3546 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3546) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3547) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:11:43,628 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3546 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_3546) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_3547 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3546 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_3546) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_3547) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-23 23:11:45,064 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3639 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3638 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3546 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3639) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3638) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3546) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3639 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3638 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3547 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3546 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3638))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3639) .cse2 v_ArrVal_3546) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_3547) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-23 23:11:45,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [141976618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:11:45,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:11:45,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 10 [2024-11-23 23:11:45,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956626516] [2024-11-23 23:11:45,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:11:45,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:11:45,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:11:45,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:11:45,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=132, Unknown=6, NotChecked=162, Total=342 [2024-11-23 23:11:45,073 INFO L87 Difference]: Start difference. First operand 823 states and 885 transitions. Second operand has 11 states, 9 states have (on average 11.555555555555555) internal successors, (104), 11 states have internal predecessors, (104), 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) [2024-11-23 23:11:51,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:51,444 INFO L93 Difference]: Finished difference Result 822 states and 884 transitions. [2024-11-23 23:11:51,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:11:51,445 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 11.555555555555555) internal successors, (104), 11 states have internal predecessors, (104), 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 119 [2024-11-23 23:11:51,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:51,447 INFO L225 Difference]: With dead ends: 822 [2024-11-23 23:11:51,448 INFO L226 Difference]: Without dead ends: 822 [2024-11-23 23:11:51,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 230 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=283, Unknown=6, NotChecked=234, Total=600 [2024-11-23 23:11:51,449 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 424 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:51,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 2323 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-23 23:11:51,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2024-11-23 23:11:51,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 822. [2024-11-23 23:11:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 548 states have (on average 1.6003649635036497) internal successors, (877), 816 states have internal predecessors, (877), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 23:11:51,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 884 transitions. [2024-11-23 23:11:51,462 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 884 transitions. Word has length 119 [2024-11-23 23:11:51,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:51,463 INFO L471 AbstractCegarLoop]: Abstraction has 822 states and 884 transitions. [2024-11-23 23:11:51,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 11.555555555555555) internal successors, (104), 11 states have internal predecessors, (104), 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) [2024-11-23 23:11:51,463 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 884 transitions. [2024-11-23 23:11:51,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-23 23:11:51,464 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:51,464 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:51,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-23 23:11:51,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-23 23:11:51,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 23:11:51,865 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:11:51,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:51,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1379954683, now seen corresponding path program 1 times [2024-11-23 23:11:51,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:11:51,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676039180] [2024-11-23 23:11:51,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:51,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:11:51,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:11:51,869 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:11:51,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-23 23:11:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:52,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-23 23:11:52,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:11:52,581 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:11:52,581 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 [2024-11-23 23:11:52,602 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 [2024-11-23 23:11:53,110 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:11:53,110 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 [2024-11-23 23:11:53,218 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:11:53,219 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 [2024-11-23 23:11:53,297 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:11:53,297 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 [2024-11-23 23:11:53,312 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 [2024-11-23 23:11:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:11:53,335 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:11:53,430 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4060 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4060) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2024-11-23 23:11:53,444 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4060 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4059 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4059))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4060)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:11:53,454 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4060 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4059 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4059))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4060)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:11:53,898 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2024-11-23 23:11:53,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 60 [2024-11-23 23:11:53,910 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4060 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4106 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4059 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4106))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4059)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4060)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-23 23:11:53,912 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:11:53,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676039180] [2024-11-23 23:11:53,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676039180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:11:53,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1452288307] [2024-11-23 23:11:53,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:53,913 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:11:53,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:11:53,914 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:11:53,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-23 23:12:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:04,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-23 23:12:04,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:12:04,430 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-23 23:12:04,430 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 14 treesize of output 20 [2024-11-23 23:12:04,776 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-23 23:12:04,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-11-23 23:12:04,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2024-11-23 23:12:05,068 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 34 treesize of output 16 [2024-11-23 23:12:06,475 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:12:06,476 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 54 treesize of output 51 [2024-11-23 23:12:06,680 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:12:06,680 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 54 treesize of output 51 [2024-11-23 23:12:06,835 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:12:06,835 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 54 treesize of output 51 [2024-11-23 23:12:06,874 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 43 treesize of output 19 [2024-11-23 23:12:06,944 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:12:06,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:12:07,019 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4060 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4529 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4529))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4060)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:12:07,028 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4060 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4529 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4529))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4060)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:12:07,435 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4060 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4529 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4576 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4576))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4529)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4060)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:12:07,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1452288307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:12:07,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:12:07,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 23 [2024-11-23 23:12:07,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787560398] [2024-11-23 23:12:07,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:12:07,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-23 23:12:07,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:12:07,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-23 23:12:07,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=546, Unknown=14, NotChecked=378, Total=1056 [2024-11-23 23:12:07,439 INFO L87 Difference]: Start difference. First operand 822 states and 884 transitions. Second operand has 24 states, 21 states have (on average 7.428571428571429) internal successors, (156), 23 states have internal predecessors, (156), 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) [2024-11-23 23:12:18,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:18,980 INFO L93 Difference]: Finished difference Result 1496 states and 1610 transitions. [2024-11-23 23:12:18,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-23 23:12:18,981 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.428571428571429) internal successors, (156), 23 states have internal predecessors, (156), 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 122 [2024-11-23 23:12:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:18,986 INFO L225 Difference]: With dead ends: 1496 [2024-11-23 23:12:18,986 INFO L226 Difference]: Without dead ends: 1496 [2024-11-23 23:12:18,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 229 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=250, Invalid=1482, Unknown=18, NotChecked=602, Total=2352 [2024-11-23 23:12:18,988 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 1348 mSDsluCounter, 5127 mSDsCounter, 0 mSdLazyCounter, 5568 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 5494 SdHoareTripleChecker+Invalid, 5593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 5568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:18,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 5494 Invalid, 5593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 5568 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2024-11-23 23:12:18,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2024-11-23 23:12:19,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 821. [2024-11-23 23:12:19,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 548 states have (on average 1.5985401459854014) internal successors, (876), 815 states have internal predecessors, (876), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 23:12:19,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 883 transitions. [2024-11-23 23:12:19,008 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 883 transitions. Word has length 122 [2024-11-23 23:12:19,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:19,008 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 883 transitions. [2024-11-23 23:12:19,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.428571428571429) internal successors, (156), 23 states have internal predecessors, (156), 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) [2024-11-23 23:12:19,009 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 883 transitions. [2024-11-23 23:12:19,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-23 23:12:19,011 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:19,011 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:12:19,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-23 23:12:19,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2024-11-23 23:12:19,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 23:12:19,412 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:12:19,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:19,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1379954682, now seen corresponding path program 1 times [2024-11-23 23:12:19,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:12:19,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303084917] [2024-11-23 23:12:19,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:19,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:12:19,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:12:19,415 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:12:19,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-23 23:12:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:20,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-23 23:12:20,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:12:20,169 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 [2024-11-23 23:12:20,185 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:12:20,185 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 [2024-11-23 23:12:20,218 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 [2024-11-23 23:12:20,233 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 [2024-11-23 23:12:20,372 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 [2024-11-23 23:12:20,377 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 [2024-11-23 23:12:21,079 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:12:21,079 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 [2024-11-23 23:12:21,088 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 [2024-11-23 23:12:21,199 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:12:21,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-23 23:12:21,207 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 [2024-11-23 23:12:21,299 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:12:21,300 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 [2024-11-23 23:12:21,308 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 [2024-11-23 23:12:21,332 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 [2024-11-23 23:12:21,338 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 [2024-11-23 23:12:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:12:21,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:12:21,500 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5044 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5044 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5045 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5045) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:12:21,523 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5044 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_5044 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5045 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_5045) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-23 23:12:21,637 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5042 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5043 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5044 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5045 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5042))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5043) .cse0 v_ArrVal_5044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5045) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5042 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5043 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5044 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5043) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5042) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv8 32)) (bvadd .cse3 (_ bv12 32))))))) is different from false [2024-11-23 23:12:27,978 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:12:27,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303084917] [2024-11-23 23:12:27,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303084917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:12:27,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1207077075] [2024-11-23 23:12:27,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:27,979 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:12:27,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:12:27,980 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:12:27,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-23 23:12:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:39,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-23 23:12:39,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:12:39,413 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 [2024-11-23 23:12:40,533 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:12:40,534 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 [2024-11-23 23:12:40,572 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 [2024-11-23 23:12:40,635 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 [2024-11-23 23:12:40,657 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 [2024-11-23 23:12:41,037 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 [2024-11-23 23:12:41,059 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 [2024-11-23 23:12:45,545 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:12:45,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-23 23:12:45,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-23 23:12:45,993 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:12:45,993 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 [2024-11-23 23:12:46,033 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 [2024-11-23 23:12:46,359 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:12:46,360 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 [2024-11-23 23:12:46,402 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 [2024-11-23 23:12:46,546 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 [2024-11-23 23:12:46,586 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 [2024-11-23 23:12:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:12:46,587 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:12:46,812 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5608 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5608) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd (_ bv12 32) .cse1)))))) is different from false [2024-11-23 23:12:46,892 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5608 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_5608) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-23 23:12:47,045 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5605) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5606) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5608 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5606))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5605) .cse2 v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5608) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-23 23:12:58,085 WARN L286 SmtUtils]: Spent 5.26s on a formula simplification that was a NOOP. DAG size: 356 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-23 23:12:58,911 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5608 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5700 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5699 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5700))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_5606))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5699) .cse0 v_ArrVal_5605) .cse1 v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5608) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_5605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5700 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5699 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5700))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5699) .cse6 v_ArrVal_5605) (select (select (store .cse7 .cse6 v_ArrVal_5606) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5607))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd (_ bv12 32) .cse5)))))) is different from false [2024-11-23 23:12:58,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1207077075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:12:58,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:12:58,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 11 [2024-11-23 23:12:58,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894083806] [2024-11-23 23:12:58,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:12:58,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:12:58,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:12:58,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:12:58,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=207, Unknown=30, NotChecked=252, Total=552 [2024-11-23 23:12:58,938 INFO L87 Difference]: Start difference. First operand 821 states and 883 transitions. Second operand has 12 states, 10 states have (on average 10.7) internal successors, (107), 12 states have internal predecessors, (107), 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) [2024-11-23 23:14:30,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:14:30,087 INFO L93 Difference]: Finished difference Result 820 states and 882 transitions. [2024-11-23 23:14:30,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:14:30,088 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 10.7) internal successors, (107), 12 states have internal predecessors, (107), 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 122 [2024-11-23 23:14:30,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:14:30,090 INFO L225 Difference]: With dead ends: 820 [2024-11-23 23:14:30,090 INFO L226 Difference]: Without dead ends: 820 [2024-11-23 23:14:30,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 237 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=116, Invalid=430, Unknown=34, NotChecked=350, Total=930 [2024-11-23 23:14:30,091 INFO L435 NwaCegarLoop]: 461 mSDtfsCounter, 422 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 3528 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 3535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 87.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:14:30,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 2862 Invalid, 3535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3528 Invalid, 0 Unknown, 0 Unchecked, 87.1s Time] [2024-11-23 23:14:30,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2024-11-23 23:14:30,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2024-11-23 23:14:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 548 states have (on average 1.5967153284671534) internal successors, (875), 814 states have internal predecessors, (875), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 23:14:30,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 882 transitions. [2024-11-23 23:14:30,105 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 882 transitions. Word has length 122 [2024-11-23 23:14:30,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:14:30,106 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 882 transitions. [2024-11-23 23:14:30,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 10.7) internal successors, (107), 12 states have internal predecessors, (107), 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) [2024-11-23 23:14:30,106 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 882 transitions. [2024-11-23 23:14:30,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 23:14:30,108 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:14:30,108 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:14:30,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-23 23:14:30,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2024-11-23 23:14:30,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 23:14:30,509 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:14:30,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:14:30,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1197305910, now seen corresponding path program 1 times [2024-11-23 23:14:30,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:14:30,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095068840] [2024-11-23 23:14:30,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:14:30,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:14:30,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:14:30,515 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:14:30,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-23 23:14:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:14:31,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-23 23:14:31,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:14:33,929 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:14:33,929 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 [2024-11-23 23:14:34,253 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 [2024-11-23 23:14:39,392 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:14:39,392 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 [2024-11-23 23:14:40,340 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:14:40,340 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 [2024-11-23 23:14:41,321 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:14:41,321 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 [2024-11-23 23:14:42,414 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:14:42,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-23 23:14:43,242 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 [2024-11-23 23:14:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:14:43,769 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:14:44,636 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-23 23:14:44,637 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 [2024-11-23 23:14:44,721 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6137 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6137) |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 [2024-11-23 23:14:44,830 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6137 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_6137) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-23 23:14:44,994 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6136 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6137 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6136)) (.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_6137) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2024-11-23 23:14:45,107 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6136 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6137 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6136))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6137) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-23 23:14:45,275 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6136 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6135 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6135))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6136)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6137) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-23 23:14:45,395 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6136 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6135 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6135))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6136)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6137) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-23 23:14:48,368 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6183 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6136 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6135 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6183))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6135)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6136)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6137) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-23 23:14:48,396 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:14:48,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095068840] [2024-11-23 23:14:48,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095068840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:14:48,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [152721460] [2024-11-23 23:14:48,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:14:48,397 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:14:48,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:14:48,399 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:14:48,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-23 23:15:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:03,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-23 23:15:03,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:15:04,713 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-23 23:15:04,713 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 14 treesize of output 20 [2024-11-23 23:15:11,067 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-23 23:15:11,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-11-23 23:15:12,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2024-11-23 23:15:15,646 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 34 treesize of output 16 [2024-11-23 23:15:33,399 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:15:33,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-23 23:15:36,199 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:15:36,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-23 23:15:38,226 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:15:38,226 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 54 treesize of output 51 [2024-11-23 23:15:40,325 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:15:40,325 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 54 treesize of output 51 [2024-11-23 23:15:40,850 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 43 treesize of output 19 [2024-11-23 23:15:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:15:42,127 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:15:43,890 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6623 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6623) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-23 23:15:44,073 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6622 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6623 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6622))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6623)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-23 23:15:44,208 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6622 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6623 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6622))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6623)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:15:44,378 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6621 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6622 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6623 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6621))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6622)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6623)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:15:44,491 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6621 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6622 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6623 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6621))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6622)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6623)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-23 23:15:47,441 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6621 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6622 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6623 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6669))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6621)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6622)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6623)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:15:47,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [152721460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:15:47,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:15:47,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 24 [2024-11-23 23:15:47,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493037892] [2024-11-23 23:15:47,467 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:15:47,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-23 23:15:47,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:15:47,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-23 23:15:47,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=597, Unknown=20, NotChecked=806, Total=1560 [2024-11-23 23:15:47,469 INFO L87 Difference]: Start difference. First operand 820 states and 882 transitions. Second operand has 25 states, 22 states have (on average 7.363636363636363) internal successors, (162), 25 states have internal predecessors, (162), 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) [2024-11-23 23:17:50,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:17:50,627 INFO L93 Difference]: Finished difference Result 1492 states and 1606 transitions. [2024-11-23 23:17:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-23 23:17:50,627 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 7.363636363636363) internal successors, (162), 25 states have internal predecessors, (162), 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 125 [2024-11-23 23:17:50,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:17:50,631 INFO L225 Difference]: With dead ends: 1492 [2024-11-23 23:17:50,631 INFO L226 Difference]: Without dead ends: 1492 [2024-11-23 23:17:50,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=245, Invalid=1344, Unknown=23, NotChecked=1144, Total=2756 [2024-11-23 23:17:50,632 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 1030 mSDsluCounter, 4250 mSDsCounter, 0 mSdLazyCounter, 4693 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 4617 SdHoareTripleChecker+Invalid, 4718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 4693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:17:50,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 4617 Invalid, 4718 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 4693 Invalid, 0 Unknown, 0 Unchecked, 117.1s Time] [2024-11-23 23:17:50,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2024-11-23 23:17:50,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 819. [2024-11-23 23:17:50,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 548 states have (on average 1.594890510948905) internal successors, (874), 813 states have internal predecessors, (874), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 23:17:50,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 881 transitions. [2024-11-23 23:17:50,649 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 881 transitions. Word has length 125 [2024-11-23 23:17:50,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:17:50,649 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 881 transitions. [2024-11-23 23:17:50,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 7.363636363636363) internal successors, (162), 25 states have internal predecessors, (162), 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) [2024-11-23 23:17:50,650 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 881 transitions. [2024-11-23 23:17:50,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 23:17:50,651 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:17:50,651 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:17:50,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2024-11-23 23:17:50,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-23 23:17:51,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:17:51,052 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:17:51,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:17:51,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1197305911, now seen corresponding path program 1 times [2024-11-23 23:17:51,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:17:51,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488245088] [2024-11-23 23:17:51,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:17:51,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:17:51,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:17:51,055 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:17:51,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-23 23:17:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:17:51,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-23 23:17:51,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:17:54,400 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 [2024-11-23 23:17:54,655 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:17:54,655 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 [2024-11-23 23:17:55,079 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 [2024-11-23 23:17:55,128 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 [2024-11-23 23:17:56,771 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 [2024-11-23 23:17:56,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-23 23:18:06,930 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:18:06,930 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 [2024-11-23 23:18:07,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-23 23:18:08,491 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:18:08,492 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 [2024-11-23 23:18:08,587 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 [2024-11-23 23:18:09,868 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:18:09,868 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 [2024-11-23 23:18:09,965 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 [2024-11-23 23:18:11,288 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:18:11,288 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 [2024-11-23 23:18:11,399 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 [2024-11-23 23:18:11,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-23 23:18:11,946 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 [2024-11-23 23:18:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:18:12,440 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:18:13,960 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7155 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7155) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:18:14,141 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7155 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7155) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse2) (bvadd (_ bv24 32) .cse2))))))) is different from false [2024-11-23 23:18:14,444 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7152 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7153) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7152) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7152 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7155 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7152))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7153) .cse2 v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_7155) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-23 23:18:14,675 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7152 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7155 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7152))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7153) .cse1 v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7155) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7152 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7153) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7152) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv20 32)) (bvadd .cse4 (_ bv24 32)))))))) is different from false [2024-11-23 23:18:15,512 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7151 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7152 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7150 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7155 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7151))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_7152))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7150) .cse0 v_ArrVal_7153) .cse1 v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7155) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_7151 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7152 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7150 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7151))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7150) .cse6 v_ArrVal_7153) (select (select (store .cse7 .cse6 v_ArrVal_7152) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7154))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse5) (bvadd (_ bv24 32) .cse5)))))) is different from false [2024-11-23 23:18:23,783 WARN L286 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 356 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-23 23:18:25,814 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7151 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7152 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7150 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7155 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7246 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7247))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_7151))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_7152))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7246) .cse0 v_ArrVal_7150) .cse1 v_ArrVal_7153) .cse2 v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_7155) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_7151 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7152 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7150 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7246 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7247))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_7151))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7246) .cse8 v_ArrVal_7150) .cse9 v_ArrVal_7153) (select (select (store .cse10 .cse9 v_ArrVal_7152) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7154))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse7) (bvadd (_ bv24 32) .cse7)))))) is different from false [2024-11-23 23:18:25,853 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:18:25,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488245088] [2024-11-23 23:18:25,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488245088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:18:25,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [61077539] [2024-11-23 23:18:25,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:18:25,854 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:18:25,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:18:25,856 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:18:25,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-23 23:18:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:18:40,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-23 23:18:40,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:18:40,584 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 [2024-11-23 23:18:43,164 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 [2024-11-23 23:18:43,462 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:18:43,462 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 [2024-11-23 23:18:43,609 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 [2024-11-23 23:18:43,705 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 [2024-11-23 23:18:44,520 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 [2024-11-23 23:18:44,568 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 [2024-11-23 23:18:54,261 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:18:54,262 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 [2024-11-23 23:18:54,355 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 [2024-11-23 23:18:55,337 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:18:55,337 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 [2024-11-23 23:18:55,461 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 [2024-11-23 23:18:56,185 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:18:56,186 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 [2024-11-23 23:18:56,280 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 [2024-11-23 23:18:57,017 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:18:57,017 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 [2024-11-23 23:18:57,115 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 [2024-11-23 23:18:57,466 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 [2024-11-23 23:18:57,557 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 [2024-11-23 23:18:57,559 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:18:57,559 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:18:58,008 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7735) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv20 32) .cse1) (bvadd (_ bv24 32) .cse1)))))) is different from false [2024-11-23 23:18:58,170 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_7735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7735) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv20 32)) (bvadd .cse2 (_ bv24 32)))))))) is different from false [2024-11-23 23:18:58,549 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7732) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7733) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_7735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7733))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7732) .cse2 v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_7735) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-23 23:18:58,739 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7733))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7732) .cse1 v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7735) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7732) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7733) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse4) (bvadd (_ bv24 32) .cse4))))))) is different from false [2024-11-23 23:18:59,592 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7731 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7730 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7730))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7731) .cse1 v_ArrVal_7732) (select (select (store .cse2 .cse1 v_ArrVal_7733) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7734))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7731 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7730 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7730))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_7733))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7731) .cse4 v_ArrVal_7732) .cse5 v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_7735) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-23 23:18:59,948 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_7735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7731 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7730 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7730))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_7733))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7731) .cse1 v_ArrVal_7732) .cse2 v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_7735) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7731 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7730 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7730))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7731) .cse7 v_ArrVal_7732) (select (select (store .cse8 .cse7 v_ArrVal_7733) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7734))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse6 (_ bv20 32)) (bvadd .cse6 (_ bv24 32)))))))) is different from false [2024-11-23 23:19:05,554 WARN L286 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 356 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-23 23:19:10,879 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7827 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7826 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7731 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7730 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7826))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_7730))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_7733))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7827) .cse0 v_ArrVal_7731) .cse1 v_ArrVal_7732) .cse2 v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_7735) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_7827 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7826 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7731 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7730 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7826))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_7730))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7827) .cse8 v_ArrVal_7731) .cse9 v_ArrVal_7732) (select (select (store .cse10 .cse9 v_ArrVal_7733) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7734))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse7) (bvadd (_ bv24 32) .cse7)))))) is different from false [2024-11-23 23:19:10,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [61077539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:19:10,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:19:10,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 12 [2024-11-23 23:19:10,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56183971] [2024-11-23 23:19:10,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:19:10,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:19:10,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:19:10,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:19:10,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=203, Unknown=18, NotChecked=520, Total=812 [2024-11-23 23:19:10,928 INFO L87 Difference]: Start difference. First operand 819 states and 881 transitions. Second operand has 13 states, 11 states have (on average 10.0) internal successors, (110), 13 states have internal predecessors, (110), 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) [2024-11-23 23:20:50,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:50,104 INFO L93 Difference]: Finished difference Result 818 states and 880 transitions. [2024-11-23 23:20:50,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:20:50,105 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.0) internal successors, (110), 13 states have internal predecessors, (110), 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 125 [2024-11-23 23:20:50,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:50,109 INFO L225 Difference]: With dead ends: 818 [2024-11-23 23:20:50,109 INFO L226 Difference]: Without dead ends: 818 [2024-11-23 23:20:50,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 244 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=126, Invalid=460, Unknown=18, NotChecked=728, Total=1332 [2024-11-23 23:20:50,111 INFO L435 NwaCegarLoop]: 460 mSDtfsCounter, 420 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 2329 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:50,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 2329 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 93.5s Time] [2024-11-23 23:20:50,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2024-11-23 23:20:50,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2024-11-23 23:20:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 548 states have (on average 1.5930656934306568) internal successors, (873), 812 states have internal predecessors, (873), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 23:20:50,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 880 transitions. [2024-11-23 23:20:50,126 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 880 transitions. Word has length 125 [2024-11-23 23:20:50,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:50,126 INFO L471 AbstractCegarLoop]: Abstraction has 818 states and 880 transitions. [2024-11-23 23:20:50,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.0) internal successors, (110), 13 states have internal predecessors, (110), 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) [2024-11-23 23:20:50,127 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 880 transitions. [2024-11-23 23:20:50,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-23 23:20:50,128 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:50,129 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:50,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2024-11-23 23:20:50,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-23 23:20:50,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:20:50,530 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-23 23:20:50,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:50,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2125742392, now seen corresponding path program 1 times [2024-11-23 23:20:50,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:20:50,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693254900] [2024-11-23 23:20:50,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:50,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:20:50,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:20:50,533 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:20:50,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-23 23:20:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:51,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-23 23:20:51,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:20:55,000 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:20:55,001 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 [2024-11-23 23:20:55,445 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 [2024-11-23 23:21:02,470 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:21:02,470 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 [2024-11-23 23:21:03,729 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:21:03,729 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 [2024-11-23 23:21:05,103 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:21:05,103 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 [2024-11-23 23:21:06,572 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:21:06,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-23 23:21:08,092 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:21:08,092 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 [2024-11-23 23:21:09,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-23 23:21:10,719 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-23 23:21:10,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-23 23:21:10,804 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:21:10,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:21:13,216 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-23 23:21:13,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-23 23:21:13,331 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem38#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2024-11-23 23:21:13,481 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse0)))) is different from false [2024-11-23 23:21:13,692 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8281)) (.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_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-23 23:21:13,843 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8281))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-23 23:21:14,064 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8280))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8281)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-23 23:21:14,219 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8280))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8281)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-23 23:21:14,440 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8279 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8279))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8280)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8281)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-23 23:21:14,598 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8279 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8279))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8280)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8281)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-23 23:21:18,577 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8329 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8279 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8329))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8279)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8280)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8281)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-23 23:21:18,612 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:21:18,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693254900] [2024-11-23 23:21:18,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693254900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:21:18,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [426777155] [2024-11-23 23:21:18,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:21:18,612 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:21:18,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:21:18,614 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:21:18,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b327f-fbd7-40df-9282-8f76d453eb0c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-23 23:21:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:21:25,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-23 23:21:25,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:21:27,160 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-23 23:21:27,161 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 14 treesize of output 20 [2024-11-23 23:21:36,983 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-23 23:21:36,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-11-23 23:21:38,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2024-11-23 23:21:43,112 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 34 treesize of output 16 [2024-11-23 23:22:11,982 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:22:11,982 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 54 treesize of output 51 [2024-11-23 23:22:16,214 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:22:16,214 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 54 treesize of output 51 [2024-11-23 23:22:19,213 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:22:19,213 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 54 treesize of output 51 [2024-11-23 23:22:22,026 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:22:22,027 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 54 treesize of output 51 [2024-11-23 23:22:25,284 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:22:25,284 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 54 treesize of output 51 [2024-11-23 23:22:26,021 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 43 treesize of output 19 [2024-11-23 23:22:29,656 INFO L349 Elim1Store]: treesize reduction 82, result has 29.3 percent of original size [2024-11-23 23:22:29,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 52 [2024-11-23 23:22:29,970 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:22:29,970 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:22:33,324 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8786 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8786) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-23 23:22:33,539 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8785 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8785))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8786)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:22:33,687 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8785 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8785))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8786)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:22:33,905 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8784 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8784))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8785)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8786)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:22:34,058 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8784 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8784))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8785)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8786)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:22:34,287 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8784 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8783))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8784)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8785)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8786)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:22:34,447 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8784 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8783))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8784)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8785)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8786)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:22:40,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [426777155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:22:40,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:22:40,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 27 [2024-11-23 23:22:40,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607765977] [2024-11-23 23:22:40,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:22:40,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-23 23:22:40,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:22:40,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-23 23:22:40,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=804, Unknown=24, NotChecked=1168, Total=2162 [2024-11-23 23:22:40,075 INFO L87 Difference]: Start difference. First operand 818 states and 880 transitions. Second operand has 28 states, 25 states have (on average 6.8) internal successors, (170), 27 states have internal predecessors, (170), 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)