./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:31:56,789 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:31:56,903 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 17:31:56,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:31:56,909 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:31:56,938 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:31:56,939 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:31:56,939 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:31:56,940 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:31:56,940 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:31:56,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:31:56,941 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:31:56,944 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:31:56,945 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:31:56,945 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:31:56,945 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:31:56,946 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:31:56,946 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:31:56,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:31:56,947 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:31:56,947 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:31:56,951 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:31:56,952 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:31:56,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:31:56,952 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:31:56,953 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:31:56,953 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:31:56,953 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:31:56,954 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:31:56,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:31:56,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:31:56,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:31:56,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:31:56,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:31:56,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:31:56,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:31:56,956 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:31:56,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:31:56,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:31:56,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:31:56,958 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:31:56,958 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:31:56,959 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2024-11-08 17:31:57,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:31:57,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:31:57,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:31:57,310 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:31:57,310 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:31:57,312 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i Unable to find full path for "g++" [2024-11-08 17:31:59,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:31:59,660 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:31:59,662 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i [2024-11-08 17:31:59,683 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/data/dd94eaa60/79121c05df4b4ca2b70729bcffe8bfe6/FLAG7a21d0694 [2024-11-08 17:31:59,708 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/data/dd94eaa60/79121c05df4b4ca2b70729bcffe8bfe6 [2024-11-08 17:31:59,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:31:59,714 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:31:59,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:31:59,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:31:59,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:31:59,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:31:59" (1/1) ... [2024-11-08 17:31:59,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a84d76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:31:59, skipping insertion in model container [2024-11-08 17:31:59,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:31:59" (1/1) ... [2024-11-08 17:31:59,799 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:32:00,275 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,330 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,341 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,349 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,361 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,415 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,415 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,423 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,423 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,430 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,434 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,435 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,439 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,448 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,449 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,451 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,452 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,454 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,454 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,459 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:00,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:32:00,479 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) [2024-11-08 17:32:00,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2cc2b606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:00, skipping insertion in model container [2024-11-08 17:32:00,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:32:00,484 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-08 17:32:00,485 INFO L158 Benchmark]: Toolchain (without parser) took 771.90ms. Allocated memory is still 140.5MB. Free memory was 106.5MB in the beginning and 81.5MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-08 17:32:00,486 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 17:32:00,491 INFO L158 Benchmark]: CACSL2BoogieTranslator took 768.22ms. Allocated memory is still 140.5MB. Free memory was 106.5MB in the beginning and 81.5MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-08 17:32:00,492 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 768.22ms. Allocated memory is still 140.5MB. Free memory was 106.5MB in the beginning and 81.5MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 750]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:32:02,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:32:02,915 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-08 17:32:02,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:32:02,927 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:32:02,966 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:32:02,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:32:02,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:32:02,971 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:32:02,972 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:32:02,973 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:32:02,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:32:02,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:32:02,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:32:02,976 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:32:02,977 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:32:02,977 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:32:02,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:32:02,978 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:32:02,978 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:32:02,978 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:32:02,983 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:32:02,983 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:32:02,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:32:02,983 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:32:02,984 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 17:32:02,984 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:32:02,984 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 17:32:02,984 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:32:02,985 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:32:02,985 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:32:02,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:32:02,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:32:02,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:32:02,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:32:02,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:32:02,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:32:02,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:32:02,989 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-08 17:32:02,989 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 17:32:02,989 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:32:02,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:32:02,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:32:02,998 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:32:02,998 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2024-11-08 17:32:03,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:32:03,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:32:03,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:32:03,428 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:32:03,429 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:32:03,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i Unable to find full path for "g++" [2024-11-08 17:32:05,616 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:32:05,987 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:32:05,992 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i [2024-11-08 17:32:06,019 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/data/7484ee39b/4cfb298c3efd43bfbce05f7c401f9dc5/FLAG96e4047f3 [2024-11-08 17:32:06,209 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/data/7484ee39b/4cfb298c3efd43bfbce05f7c401f9dc5 [2024-11-08 17:32:06,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:32:06,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:32:06,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:32:06,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:32:06,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:32:06,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:32:06" (1/1) ... [2024-11-08 17:32:06,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3ae717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:06, skipping insertion in model container [2024-11-08 17:32:06,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:32:06" (1/1) ... [2024-11-08 17:32:06,276 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:32:06,846 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:06,903 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:06,909 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:06,918 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:06,929 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:06,981 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:06,986 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:06,989 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:06,994 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:06,998 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,000 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,001 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,002 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,007 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,009 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,012 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,013 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,014 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,015 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,020 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:32:07,054 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-08 17:32:07,070 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:32:07,108 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,155 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,158 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,160 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,168 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,202 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,210 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,213 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,217 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,220 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,223 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,225 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,227 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,232 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,236 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,238 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,243 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,244 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,245 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,255 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:32:07,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:32:07,264 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:32:07,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:32:07,391 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:32:07,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:07 WrapperNode [2024-11-08 17:32:07,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:32:07,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:32:07,393 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:32:07,393 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:32:07,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:07" (1/1) ... [2024-11-08 17:32:07,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:07" (1/1) ... [2024-11-08 17:32:07,511 INFO L138 Inliner]: procedures = 180, calls = 325, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1177 [2024-11-08 17:32:07,512 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:32:07,512 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:32:07,513 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:32:07,513 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:32:07,525 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:07" (1/1) ... [2024-11-08 17:32:07,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:07" (1/1) ... [2024-11-08 17:32:07,536 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:07" (1/1) ... [2024-11-08 17:32:07,657 INFO L175 MemorySlicer]: Split 302 memory accesses to 3 slices as follows [2, 34, 266]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 4, 58]. [2024-11-08 17:32:07,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:07" (1/1) ... [2024-11-08 17:32:07,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:07" (1/1) ... [2024-11-08 17:32:07,730 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:07" (1/1) ... [2024-11-08 17:32:07,770 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:07" (1/1) ... [2024-11-08 17:32:07,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:07" (1/1) ... [2024-11-08 17:32:07,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:07" (1/1) ... [2024-11-08 17:32:07,788 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:32:07,789 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:32:07,789 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:32:07,790 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:32:07,790 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:07" (1/1) ... [2024-11-08 17:32:07,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:32:07,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:07,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:32:07,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:32:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-08 17:32:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-08 17:32:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-08 17:32:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-08 17:32:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-08 17:32:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-08 17:32:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 17:32:07,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 17:32:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-08 17:32:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-08 17:32:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-08 17:32:07,863 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-08 17:32:07,863 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-08 17:32:07,863 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-08 17:32:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:32:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:32:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 17:32:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 17:32:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 17:32:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 17:32:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 17:32:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 17:32:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-08 17:32:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-08 17:32:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-08 17:32:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-08 17:32:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 17:32:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 17:32:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-08 17:32:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-08 17:32:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:32:07,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:32:08,121 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:32:08,123 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:32:08,127 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-08 17:32:08,180 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-08 17:32:08,204 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-08 17:32:13,500 INFO L? ?]: Removed 1306 outVars from TransFormulas that were not future-live. [2024-11-08 17:32:13,501 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:32:13,561 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:32:13,562 INFO L316 CfgBuilder]: Removed 66 assume(true) statements. [2024-11-08 17:32:13,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:32:13 BoogieIcfgContainer [2024-11-08 17:32:13,563 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:32:13,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:32:13,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:32:13,572 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:32:13,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:32:06" (1/3) ... [2024-11-08 17:32:13,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585f75c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:32:13, skipping insertion in model container [2024-11-08 17:32:13,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:32:07" (2/3) ... [2024-11-08 17:32:13,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585f75c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:32:13, skipping insertion in model container [2024-11-08 17:32:13,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:32:13" (3/3) ... [2024-11-08 17:32:13,577 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test3-2.i [2024-11-08 17:32:13,597 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:32:13,598 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 630 error locations. [2024-11-08 17:32:13,697 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:32:13,704 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;@33d52e18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:32:13,704 INFO L334 AbstractCegarLoop]: Starting to check reachability of 630 error locations. [2024-11-08 17:32:13,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 1265 states, 630 states have (on average 2.2253968253968255) internal successors, (1402), 1258 states have internal predecessors, (1402), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:32:13,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-08 17:32:13,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:32:13,718 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-08 17:32:13,718 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr628ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:32:13,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:13,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1758676, now seen corresponding path program 1 times [2024-11-08 17:32:13,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:32:13,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738920428] [2024-11-08 17:32:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:13,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:13,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:13,740 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:13,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:32:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:13,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:32:13,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:14,048 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_46| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46| (_ bv0 1)) |c_#valid|))) is different from true [2024-11-08 17:32:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:14,050 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:32:14,051 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:32:14,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738920428] [2024-11-08 17:32:14,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738920428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:14,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:14,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:32:14,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968132836] [2024-11-08 17:32:14,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:14,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:32:14,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:32:14,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:32:14,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-08 17:32:14,103 INFO L87 Difference]: Start difference. First operand has 1265 states, 630 states have (on average 2.2253968253968255) internal successors, (1402), 1258 states have internal predecessors, (1402), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:17,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:32:17,935 INFO L93 Difference]: Finished difference Result 1841 states and 1975 transitions. [2024-11-08 17:32:17,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:32:17,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-08 17:32:17,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:32:17,971 INFO L225 Difference]: With dead ends: 1841 [2024-11-08 17:32:17,971 INFO L226 Difference]: Without dead ends: 1838 [2024-11-08 17:32:17,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-08 17:32:17,976 INFO L432 NwaCegarLoop]: 1051 mSDtfsCounter, 624 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1976 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:32:17,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 1740 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 946 Invalid, 0 Unknown, 1976 Unchecked, 3.7s Time] [2024-11-08 17:32:17,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2024-11-08 17:32:18,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1253. [2024-11-08 17:32:18,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 624 states have (on average 2.110576923076923) internal successors, (1317), 1246 states have internal predecessors, (1317), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:32:18,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1327 transitions. [2024-11-08 17:32:18,084 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1327 transitions. Word has length 4 [2024-11-08 17:32:18,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:32:18,085 INFO L471 AbstractCegarLoop]: Abstraction has 1253 states and 1327 transitions. [2024-11-08 17:32:18,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:18,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1327 transitions. [2024-11-08 17:32:18,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-08 17:32:18,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:32:18,086 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-08 17:32:18,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:32:18,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:18,291 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:32:18,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:18,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1756837, now seen corresponding path program 1 times [2024-11-08 17:32:18,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:32:18,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345882270] [2024-11-08 17:32:18,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:18,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:18,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:18,295 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:18,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:32:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:18,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:32:18,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:18,489 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 [2024-11-08 17:32:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:18,511 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:32:18,512 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:32:18,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345882270] [2024-11-08 17:32:18,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345882270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:18,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:18,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:32:18,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352655226] [2024-11-08 17:32:18,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:18,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:32:18,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:32:18,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:32:18,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:32:18,515 INFO L87 Difference]: Start difference. First operand 1253 states and 1327 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:21,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:32:21,062 INFO L93 Difference]: Finished difference Result 1440 states and 1526 transitions. [2024-11-08 17:32:21,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:32:21,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-08 17:32:21,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:32:21,069 INFO L225 Difference]: With dead ends: 1440 [2024-11-08 17:32:21,069 INFO L226 Difference]: Without dead ends: 1440 [2024-11-08 17:32:21,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:32:21,071 INFO L432 NwaCegarLoop]: 765 mSDtfsCounter, 1169 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:32:21,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 931 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 17:32:21,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2024-11-08 17:32:21,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1252. [2024-11-08 17:32:21,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 633 states have (on average 2.0821484992101107) internal successors, (1318), 1244 states have internal predecessors, (1318), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:32:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1328 transitions. [2024-11-08 17:32:21,112 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1328 transitions. Word has length 4 [2024-11-08 17:32:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:32:21,113 INFO L471 AbstractCegarLoop]: Abstraction has 1252 states and 1328 transitions. [2024-11-08 17:32:21,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1328 transitions. [2024-11-08 17:32:21,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-08 17:32:21,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:32:21,114 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-08 17:32:21,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 17:32:21,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:21,315 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:32:21,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:21,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1756838, now seen corresponding path program 1 times [2024-11-08 17:32:21,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:32:21,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725950460] [2024-11-08 17:32:21,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:21,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:21,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:21,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:21,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:32:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:21,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:32:21,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:21,497 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 [2024-11-08 17:32:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:21,524 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:32:21,524 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:32:21,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725950460] [2024-11-08 17:32:21,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725950460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:21,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:21,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:32:21,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189597730] [2024-11-08 17:32:21,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:21,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:32:21,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:32:21,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:32:21,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:32:21,526 INFO L87 Difference]: Start difference. First operand 1252 states and 1328 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:25,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:32:25,582 INFO L93 Difference]: Finished difference Result 1861 states and 1986 transitions. [2024-11-08 17:32:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:32:25,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-08 17:32:25,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:32:25,589 INFO L225 Difference]: With dead ends: 1861 [2024-11-08 17:32:25,589 INFO L226 Difference]: Without dead ends: 1861 [2024-11-08 17:32:25,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:32:25,591 INFO L432 NwaCegarLoop]: 1030 mSDtfsCounter, 652 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:32:25,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1733 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-08 17:32:25,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2024-11-08 17:32:25,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1464. [2024-11-08 17:32:25,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 845 states have (on average 2.06508875739645) internal successors, (1745), 1455 states have internal predecessors, (1745), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:32:25,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1757 transitions. [2024-11-08 17:32:25,649 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1757 transitions. Word has length 4 [2024-11-08 17:32:25,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:32:25,649 INFO L471 AbstractCegarLoop]: Abstraction has 1464 states and 1757 transitions. [2024-11-08 17:32:25,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:25,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1757 transitions. [2024-11-08 17:32:25,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 17:32:25,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:32:25,651 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:32:25,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:32:25,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:25,852 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:32:25,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:25,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1021429073, now seen corresponding path program 1 times [2024-11-08 17:32:25,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:32:25,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369575487] [2024-11-08 17:32:25,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:25,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:25,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:25,857 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:25,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:32:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:26,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:32:26,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:26,035 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 [2024-11-08 17:32:26,159 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-08 17:32:26,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-08 17:32:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:26,299 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:32:26,299 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:32:26,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369575487] [2024-11-08 17:32:26,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369575487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:26,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:26,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:32:26,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437600494] [2024-11-08 17:32:26,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:26,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:32:26,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:32:26,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:32:26,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:32:26,309 INFO L87 Difference]: Start difference. First operand 1464 states and 1757 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:33,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:32:33,947 INFO L93 Difference]: Finished difference Result 2757 states and 2948 transitions. [2024-11-08 17:32:33,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:32:33,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-08 17:32:33,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:32:33,960 INFO L225 Difference]: With dead ends: 2757 [2024-11-08 17:32:33,961 INFO L226 Difference]: Without dead ends: 2757 [2024-11-08 17:32:33,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:32:33,962 INFO L432 NwaCegarLoop]: 1266 mSDtfsCounter, 1601 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:32:33,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 2669 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-08 17:32:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2024-11-08 17:32:33,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 1613. [2024-11-08 17:32:34,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 994 states have (on average 2.045271629778672) internal successors, (2033), 1604 states have internal predecessors, (2033), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:32:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2045 transitions. [2024-11-08 17:32:34,007 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2045 transitions. Word has length 8 [2024-11-08 17:32:34,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:32:34,007 INFO L471 AbstractCegarLoop]: Abstraction has 1613 states and 2045 transitions. [2024-11-08 17:32:34,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2045 transitions. [2024-11-08 17:32:34,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 17:32:34,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:32:34,009 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:32:34,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 17:32:34,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:34,213 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:32:34,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:34,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530194, now seen corresponding path program 1 times [2024-11-08 17:32:34,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:32:34,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584533973] [2024-11-08 17:32:34,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:34,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:34,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:34,215 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:34,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:32:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:34,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:32:34,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:34,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-08 17:32:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:34,399 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:32:34,400 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:32:34,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584533973] [2024-11-08 17:32:34,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584533973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:34,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:34,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:32:34,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402726418] [2024-11-08 17:32:34,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:34,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:32:34,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:32:34,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:32:34,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:32:34,402 INFO L87 Difference]: Start difference. First operand 1613 states and 2045 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:37,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:32:37,511 INFO L93 Difference]: Finished difference Result 2161 states and 2825 transitions. [2024-11-08 17:32:37,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:32:37,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-08 17:32:37,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:32:37,519 INFO L225 Difference]: With dead ends: 2161 [2024-11-08 17:32:37,520 INFO L226 Difference]: Without dead ends: 2161 [2024-11-08 17:32:37,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:32:37,521 INFO L432 NwaCegarLoop]: 1192 mSDtfsCounter, 948 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:32:37,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 1551 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-08 17:32:37,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2024-11-08 17:32:37,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 1565. [2024-11-08 17:32:37,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 994 states have (on average 1.9859154929577465) internal successors, (1974), 1556 states have internal predecessors, (1974), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:32:37,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1986 transitions. [2024-11-08 17:32:37,559 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1986 transitions. Word has length 9 [2024-11-08 17:32:37,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:32:37,559 INFO L471 AbstractCegarLoop]: Abstraction has 1565 states and 1986 transitions. [2024-11-08 17:32:37,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:37,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1986 transitions. [2024-11-08 17:32:37,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 17:32:37,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:32:37,560 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:32:37,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:32:37,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:37,765 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:32:37,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:37,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530193, now seen corresponding path program 1 times [2024-11-08 17:32:37,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:32:37,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488554856] [2024-11-08 17:32:37,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:37,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:37,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:37,768 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:37,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:32:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:37,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:32:37,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:37,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:32:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:37,981 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:32:37,981 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:32:37,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488554856] [2024-11-08 17:32:37,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488554856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:37,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:37,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:32:37,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084734513] [2024-11-08 17:32:37,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:37,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:32:37,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:32:37,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:32:37,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:32:37,983 INFO L87 Difference]: Start difference. First operand 1565 states and 1986 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:41,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:32:41,785 INFO L93 Difference]: Finished difference Result 2260 states and 2924 transitions. [2024-11-08 17:32:41,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:32:41,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-08 17:32:41,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:32:41,792 INFO L225 Difference]: With dead ends: 2260 [2024-11-08 17:32:41,792 INFO L226 Difference]: Without dead ends: 2260 [2024-11-08 17:32:41,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:32:41,794 INFO L432 NwaCegarLoop]: 1378 mSDtfsCounter, 708 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:32:41,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 1914 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-08 17:32:41,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2024-11-08 17:32:41,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 1592. [2024-11-08 17:32:41,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1031 states have (on average 1.9660523763336566) internal successors, (2027), 1583 states have internal predecessors, (2027), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:32:41,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2039 transitions. [2024-11-08 17:32:41,834 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2039 transitions. Word has length 9 [2024-11-08 17:32:41,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:32:41,834 INFO L471 AbstractCegarLoop]: Abstraction has 1592 states and 2039 transitions. [2024-11-08 17:32:41,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:41,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2039 transitions. [2024-11-08 17:32:41,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 17:32:41,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:32:41,835 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:32:41,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:32:42,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:42,037 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:32:42,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:42,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1023345465, now seen corresponding path program 1 times [2024-11-08 17:32:42,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:32:42,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133043052] [2024-11-08 17:32:42,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:42,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:42,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:42,041 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:42,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:32:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:42,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:32:42,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:42,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:42,316 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:32:42,316 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:32:42,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133043052] [2024-11-08 17:32:42,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133043052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:42,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:42,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:32:42,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998286466] [2024-11-08 17:32:42,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:42,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:32:42,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:32:42,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:32:42,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:32:42,318 INFO L87 Difference]: Start difference. First operand 1592 states and 2039 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:43,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:32:43,372 INFO L93 Difference]: Finished difference Result 2213 states and 2800 transitions. [2024-11-08 17:32:43,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:32:43,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-08 17:32:43,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:32:43,380 INFO L225 Difference]: With dead ends: 2213 [2024-11-08 17:32:43,381 INFO L226 Difference]: Without dead ends: 2213 [2024-11-08 17:32:43,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:32:43,382 INFO L432 NwaCegarLoop]: 1396 mSDtfsCounter, 643 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 3816 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:32:43,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 3816 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 17:32:43,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2024-11-08 17:32:43,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 1852. [2024-11-08 17:32:43,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1289 states have (on average 1.9743987587276959) internal successors, (2545), 1841 states have internal predecessors, (2545), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-08 17:32:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2561 transitions. [2024-11-08 17:32:43,423 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2561 transitions. Word has length 13 [2024-11-08 17:32:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:32:43,423 INFO L471 AbstractCegarLoop]: Abstraction has 1852 states and 2561 transitions. [2024-11-08 17:32:43,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:43,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2561 transitions. [2024-11-08 17:32:43,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 17:32:43,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:32:43,424 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:32:43,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:32:43,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:43,625 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:32:43,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:43,625 INFO L85 PathProgramCache]: Analyzing trace with hash -723943859, now seen corresponding path program 1 times [2024-11-08 17:32:43,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:32:43,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970093013] [2024-11-08 17:32:43,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:43,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:43,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:43,627 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:43,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:32:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:43,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:32:43,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:43,795 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 [2024-11-08 17:32:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:43,865 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:32:43,865 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:32:43,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970093013] [2024-11-08 17:32:43,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970093013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:43,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:43,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:32:43,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685657217] [2024-11-08 17:32:43,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:43,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:32:43,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:32:43,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:32:43,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:32:43,868 INFO L87 Difference]: Start difference. First operand 1852 states and 2561 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:47,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:32:47,541 INFO L93 Difference]: Finished difference Result 2038 states and 2691 transitions. [2024-11-08 17:32:47,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:32:47,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-08 17:32:47,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:32:47,547 INFO L225 Difference]: With dead ends: 2038 [2024-11-08 17:32:47,547 INFO L226 Difference]: Without dead ends: 2038 [2024-11-08 17:32:47,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:32:47,548 INFO L432 NwaCegarLoop]: 722 mSDtfsCounter, 1168 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:32:47,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1495 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-08 17:32:47,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2024-11-08 17:32:47,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 1829. [2024-11-08 17:32:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1289 states have (on average 1.9030256012412723) internal successors, (2453), 1818 states have internal predecessors, (2453), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-08 17:32:47,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2469 transitions. [2024-11-08 17:32:47,587 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2469 transitions. Word has length 15 [2024-11-08 17:32:47,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:32:47,588 INFO L471 AbstractCegarLoop]: Abstraction has 1829 states and 2469 transitions. [2024-11-08 17:32:47,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:47,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2469 transitions. [2024-11-08 17:32:47,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 17:32:47,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:32:47,589 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:32:47,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 17:32:47,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:47,790 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:32:47,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:47,790 INFO L85 PathProgramCache]: Analyzing trace with hash -723943858, now seen corresponding path program 1 times [2024-11-08 17:32:47,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:32:47,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [717811653] [2024-11-08 17:32:47,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:47,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:47,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:47,793 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:47,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:32:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:47,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:32:47,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:47,988 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:32:47,988 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:32:47,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717811653] [2024-11-08 17:32:47,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717811653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:47,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:47,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:32:47,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442263403] [2024-11-08 17:32:47,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:47,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:32:47,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:32:47,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:32:47,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:32:47,990 INFO L87 Difference]: Start difference. First operand 1829 states and 2469 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:48,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:32:48,032 INFO L93 Difference]: Finished difference Result 1741 states and 2337 transitions. [2024-11-08 17:32:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:32:48,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-08 17:32:48,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:32:48,041 INFO L225 Difference]: With dead ends: 1741 [2024-11-08 17:32:48,041 INFO L226 Difference]: Without dead ends: 1741 [2024-11-08 17:32:48,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:32:48,044 INFO L432 NwaCegarLoop]: 1190 mSDtfsCounter, 61 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:32:48,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 2327 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:32:48,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2024-11-08 17:32:48,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1741. [2024-11-08 17:32:48,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 1213 states have (on average 1.9134377576257213) internal successors, (2321), 1730 states have internal predecessors, (2321), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-08 17:32:48,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 2337 transitions. [2024-11-08 17:32:48,088 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 2337 transitions. Word has length 15 [2024-11-08 17:32:48,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:32:48,089 INFO L471 AbstractCegarLoop]: Abstraction has 1741 states and 2337 transitions. [2024-11-08 17:32:48,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:48,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 2337 transitions. [2024-11-08 17:32:48,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 17:32:48,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:32:48,089 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:32:48,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 17:32:48,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:48,290 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr355REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:32:48,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:48,291 INFO L85 PathProgramCache]: Analyzing trace with hash -965639653, now seen corresponding path program 1 times [2024-11-08 17:32:48,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:32:48,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290014678] [2024-11-08 17:32:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:48,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:48,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:48,292 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:48,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:32:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:48,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:32:48,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:48,491 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:32:48,491 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:32:48,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290014678] [2024-11-08 17:32:48,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290014678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:48,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:48,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:32:48,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549810448] [2024-11-08 17:32:48,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:48,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:32:48,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:32:48,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:32:48,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:32:48,492 INFO L87 Difference]: Start difference. First operand 1741 states and 2337 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:48,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:32:48,615 INFO L93 Difference]: Finished difference Result 1702 states and 2249 transitions. [2024-11-08 17:32:48,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:32:48,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-08 17:32:48,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:32:48,622 INFO L225 Difference]: With dead ends: 1702 [2024-11-08 17:32:48,622 INFO L226 Difference]: Without dead ends: 1702 [2024-11-08 17:32:48,622 INFO L431 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 [2024-11-08 17:32:48,623 INFO L432 NwaCegarLoop]: 1152 mSDtfsCounter, 45 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3433 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:32:48,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3433 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:32:48,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2024-11-08 17:32:48,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1702. [2024-11-08 17:32:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1181 states have (on average 1.890770533446232) internal successors, (2233), 1691 states have internal predecessors, (2233), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-08 17:32:48,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2249 transitions. [2024-11-08 17:32:48,655 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2249 transitions. Word has length 16 [2024-11-08 17:32:48,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:32:48,656 INFO L471 AbstractCegarLoop]: Abstraction has 1702 states and 2249 transitions. [2024-11-08 17:32:48,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:48,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2249 transitions. [2024-11-08 17:32:48,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 17:32:48,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:32:48,657 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:32:48,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 17:32:48,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:48,858 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr628ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:32:48,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:48,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1781527879, now seen corresponding path program 1 times [2024-11-08 17:32:48,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:32:48,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307046879] [2024-11-08 17:32:48,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:48,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:48,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:48,860 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:48,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 17:32:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:49,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:32:49,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:49,223 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_47| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47|)))) is different from true [2024-11-08 17:32:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:49,224 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:32:49,224 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:32:49,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307046879] [2024-11-08 17:32:49,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307046879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:49,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:49,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:32:49,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754032070] [2024-11-08 17:32:49,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:49,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:32:49,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:32:49,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:32:49,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-08 17:32:49,226 INFO L87 Difference]: Start difference. First operand 1702 states and 2249 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:32:51,492 INFO L93 Difference]: Finished difference Result 1998 states and 2620 transitions. [2024-11-08 17:32:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:32:51,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-08 17:32:51,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:32:51,497 INFO L225 Difference]: With dead ends: 1998 [2024-11-08 17:32:51,497 INFO L226 Difference]: Without dead ends: 1990 [2024-11-08 17:32:51,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-08 17:32:51,498 INFO L432 NwaCegarLoop]: 1075 mSDtfsCounter, 242 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1432 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:32:51,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 1712 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 642 Invalid, 0 Unknown, 1432 Unchecked, 2.2s Time] [2024-11-08 17:32:51,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2024-11-08 17:32:51,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1760. [2024-11-08 17:32:51,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1238 states have (on average 1.85702746365105) internal successors, (2299), 1748 states have internal predecessors, (2299), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 17:32:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2317 transitions. [2024-11-08 17:32:51,532 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2317 transitions. Word has length 17 [2024-11-08 17:32:51,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:32:51,533 INFO L471 AbstractCegarLoop]: Abstraction has 1760 states and 2317 transitions. [2024-11-08 17:32:51,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:51,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2317 transitions. [2024-11-08 17:32:51,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 17:32:51,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:32:51,534 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:32:51,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 17:32:51,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:51,734 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:32:51,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:51,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1271928384, now seen corresponding path program 1 times [2024-11-08 17:32:51,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:32:51,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129145365] [2024-11-08 17:32:51,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:51,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:51,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:51,738 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:51,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 17:32:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:51,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:32:51,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:51,991 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 [2024-11-08 17:32:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:52,060 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:32:52,061 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:32:52,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129145365] [2024-11-08 17:32:52,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129145365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:52,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:52,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:32:52,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78749277] [2024-11-08 17:32:52,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:52,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:32:52,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:32:52,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:32:52,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:32:52,063 INFO L87 Difference]: Start difference. First operand 1760 states and 2317 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:56,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:32:56,136 INFO L93 Difference]: Finished difference Result 2196 states and 2862 transitions. [2024-11-08 17:32:56,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:32:56,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-08 17:32:56,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:32:56,144 INFO L225 Difference]: With dead ends: 2196 [2024-11-08 17:32:56,144 INFO L226 Difference]: Without dead ends: 2196 [2024-11-08 17:32:56,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:32:56,145 INFO L432 NwaCegarLoop]: 1042 mSDtfsCounter, 912 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:32:56,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 2080 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-08 17:32:56,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2024-11-08 17:32:56,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1737. [2024-11-08 17:32:56,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1737 states, 1238 states have (on average 1.819870759289176) internal successors, (2253), 1725 states have internal predecessors, (2253), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 17:32:56,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2271 transitions. [2024-11-08 17:32:56,181 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2271 transitions. Word has length 20 [2024-11-08 17:32:56,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:32:56,183 INFO L471 AbstractCegarLoop]: Abstraction has 1737 states and 2271 transitions. [2024-11-08 17:32:56,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:56,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2271 transitions. [2024-11-08 17:32:56,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 17:32:56,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:32:56,184 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:32:56,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 17:32:56,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:56,387 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:32:56,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:56,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1271928383, now seen corresponding path program 1 times [2024-11-08 17:32:56,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:32:56,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668471025] [2024-11-08 17:32:56,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:56,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:56,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:56,392 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:56,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 17:32:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:56,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:32:56,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:56,624 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:32:56,624 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:32:56,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668471025] [2024-11-08 17:32:56,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668471025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:56,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:56,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:32:56,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571206543] [2024-11-08 17:32:56,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:56,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:32:56,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:32:56,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:32:56,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:32:56,627 INFO L87 Difference]: Start difference. First operand 1737 states and 2271 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:56,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:32:56,667 INFO L93 Difference]: Finished difference Result 1687 states and 2205 transitions. [2024-11-08 17:32:56,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:32:56,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-08 17:32:56,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:32:56,675 INFO L225 Difference]: With dead ends: 1687 [2024-11-08 17:32:56,676 INFO L226 Difference]: Without dead ends: 1687 [2024-11-08 17:32:56,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:32:56,677 INFO L432 NwaCegarLoop]: 1106 mSDtfsCounter, 61 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:32:56,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 2159 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:32:56,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2024-11-08 17:32:56,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1687. [2024-11-08 17:32:56,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1200 states have (on average 1.8225) internal successors, (2187), 1675 states have internal predecessors, (2187), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 17:32:56,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2205 transitions. [2024-11-08 17:32:56,712 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2205 transitions. Word has length 20 [2024-11-08 17:32:56,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:32:56,713 INFO L471 AbstractCegarLoop]: Abstraction has 1687 states and 2205 transitions. [2024-11-08 17:32:56,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:56,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2205 transitions. [2024-11-08 17:32:56,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 17:32:56,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:32:56,714 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:32:56,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 17:32:56,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:56,915 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:32:56,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:56,916 INFO L85 PathProgramCache]: Analyzing trace with hash -773291619, now seen corresponding path program 1 times [2024-11-08 17:32:56,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:32:56,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308199476] [2024-11-08 17:32:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:56,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:56,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:56,919 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:56,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 17:32:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:57,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:32:57,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:57,179 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:32:57,179 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:32:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308199476] [2024-11-08 17:32:57,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308199476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:57,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:57,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:32:57,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40965294] [2024-11-08 17:32:57,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:57,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:32:57,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:32:57,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:32:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:32:57,181 INFO L87 Difference]: Start difference. First operand 1687 states and 2205 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:57,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:32:57,286 INFO L93 Difference]: Finished difference Result 1664 states and 2161 transitions. [2024-11-08 17:32:57,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:32:57,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-08 17:32:57,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:32:57,294 INFO L225 Difference]: With dead ends: 1664 [2024-11-08 17:32:57,294 INFO L226 Difference]: Without dead ends: 1664 [2024-11-08 17:32:57,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:32:57,295 INFO L432 NwaCegarLoop]: 1068 mSDtfsCounter, 45 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:32:57,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3181 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:32:57,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2024-11-08 17:32:57,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1664. [2024-11-08 17:32:57,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1184 states have (on average 1.8099662162162162) internal successors, (2143), 1652 states have internal predecessors, (2143), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 17:32:57,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2161 transitions. [2024-11-08 17:32:57,327 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2161 transitions. Word has length 21 [2024-11-08 17:32:57,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:32:57,327 INFO L471 AbstractCegarLoop]: Abstraction has 1664 states and 2161 transitions. [2024-11-08 17:32:57,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:32:57,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2161 transitions. [2024-11-08 17:32:57,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-08 17:32:57,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:32:57,329 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:32:57,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 17:32:57,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:57,530 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr369REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:32:57,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:32:57,530 INFO L85 PathProgramCache]: Analyzing trace with hash -987302423, now seen corresponding path program 1 times [2024-11-08 17:32:57,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:32:57,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14545947] [2024-11-08 17:32:57,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:32:57,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:32:57,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:32:57,532 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:32:57,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 17:32:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:32:57,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:32:57,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:32:57,754 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 [2024-11-08 17:32:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:32:58,057 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:32:58,058 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:32:58,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14545947] [2024-11-08 17:32:58,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14545947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:32:58,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:32:58,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:32:58,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106189256] [2024-11-08 17:32:58,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:32:58,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:32:58,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:32:58,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:32:58,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:32:58,060 INFO L87 Difference]: Start difference. First operand 1664 states and 2161 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:02,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:02,805 INFO L93 Difference]: Finished difference Result 2032 states and 2395 transitions. [2024-11-08 17:33:02,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:33:02,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2024-11-08 17:33:02,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:02,812 INFO L225 Difference]: With dead ends: 2032 [2024-11-08 17:33:02,812 INFO L226 Difference]: Without dead ends: 2032 [2024-11-08 17:33:02,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:33:02,813 INFO L432 NwaCegarLoop]: 846 mSDtfsCounter, 578 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:02,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 1971 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-08 17:33:02,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2024-11-08 17:33:02,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1664. [2024-11-08 17:33:02,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1184 states have (on average 1.7998310810810811) internal successors, (2131), 1652 states have internal predecessors, (2131), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 17:33:02,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2149 transitions. [2024-11-08 17:33:02,861 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2149 transitions. Word has length 30 [2024-11-08 17:33:02,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:02,864 INFO L471 AbstractCegarLoop]: Abstraction has 1664 states and 2149 transitions. [2024-11-08 17:33:02,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:02,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2149 transitions. [2024-11-08 17:33:02,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 17:33:02,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:02,865 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:02,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 17:33:03,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:03,066 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:33:03,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:03,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1472895925, now seen corresponding path program 1 times [2024-11-08 17:33:03,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:33:03,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552670330] [2024-11-08 17:33:03,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:03,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:03,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:03,069 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:33:03,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 17:33:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:03,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:33:03,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:03,296 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 [2024-11-08 17:33:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:03,595 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:33:03,596 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:33:03,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552670330] [2024-11-08 17:33:03,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552670330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:03,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:03,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:33:03,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485912523] [2024-11-08 17:33:03,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:03,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:33:03,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:33:03,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:33:03,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:33:03,598 INFO L87 Difference]: Start difference. First operand 1664 states and 2149 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:08,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:08,495 INFO L93 Difference]: Finished difference Result 2187 states and 2770 transitions. [2024-11-08 17:33:08,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:33:08,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 [2024-11-08 17:33:08,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:08,501 INFO L225 Difference]: With dead ends: 2187 [2024-11-08 17:33:08,502 INFO L226 Difference]: Without dead ends: 2187 [2024-11-08 17:33:08,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:33:08,503 INFO L432 NwaCegarLoop]: 1292 mSDtfsCounter, 551 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:08,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 2567 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-08 17:33:08,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2024-11-08 17:33:08,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 1660. [2024-11-08 17:33:08,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1660 states, 1184 states have (on average 1.7930743243243243) internal successors, (2123), 1648 states have internal predecessors, (2123), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 17:33:08,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2141 transitions. [2024-11-08 17:33:08,533 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2141 transitions. Word has length 35 [2024-11-08 17:33:08,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:08,533 INFO L471 AbstractCegarLoop]: Abstraction has 1660 states and 2141 transitions. [2024-11-08 17:33:08,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:08,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2141 transitions. [2024-11-08 17:33:08,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 17:33:08,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:08,535 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:08,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-08 17:33:08,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:08,735 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr414REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:33:08,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:08,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1634540191, now seen corresponding path program 1 times [2024-11-08 17:33:08,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:33:08,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657469677] [2024-11-08 17:33:08,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:08,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:08,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:08,738 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:33:08,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 17:33:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:08,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:33:08,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:09,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:09,060 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:33:09,060 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:33:09,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657469677] [2024-11-08 17:33:09,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657469677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:09,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:09,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:33:09,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647380196] [2024-11-08 17:33:09,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:09,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:33:09,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:33:09,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:33:09,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:33:09,063 INFO L87 Difference]: Start difference. First operand 1660 states and 2141 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:09,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:09,189 INFO L93 Difference]: Finished difference Result 1663 states and 1819 transitions. [2024-11-08 17:33:09,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:33:09,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 17:33:09,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:09,195 INFO L225 Difference]: With dead ends: 1663 [2024-11-08 17:33:09,195 INFO L226 Difference]: Without dead ends: 1663 [2024-11-08 17:33:09,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:33:09,196 INFO L432 NwaCegarLoop]: 1368 mSDtfsCounter, 323 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:09,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 2384 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:33:09,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2024-11-08 17:33:09,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1284. [2024-11-08 17:33:09,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 810 states have (on average 1.719753086419753) internal successors, (1393), 1274 states have internal predecessors, (1393), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-08 17:33:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1407 transitions. [2024-11-08 17:33:09,221 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1407 transitions. Word has length 49 [2024-11-08 17:33:09,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:09,221 INFO L471 AbstractCegarLoop]: Abstraction has 1284 states and 1407 transitions. [2024-11-08 17:33:09,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:09,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1407 transitions. [2024-11-08 17:33:09,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-08 17:33:09,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:09,223 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:09,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 17:33:09,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:09,428 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:33:09,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:09,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1221164139, now seen corresponding path program 1 times [2024-11-08 17:33:09,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:33:09,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2133343668] [2024-11-08 17:33:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:09,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:09,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:09,432 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:33:09,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 17:33:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:09,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:33:09,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:09,769 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:33:09,769 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:33:09,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133343668] [2024-11-08 17:33:09,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133343668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:09,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:09,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:33:09,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883969254] [2024-11-08 17:33:09,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:09,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:33:09,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:33:09,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:33:09,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:33:09,776 INFO L87 Difference]: Start difference. First operand 1284 states and 1407 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:09,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:09,889 INFO L93 Difference]: Finished difference Result 1266 states and 1377 transitions. [2024-11-08 17:33:09,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:33:09,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-08 17:33:09,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:09,893 INFO L225 Difference]: With dead ends: 1266 [2024-11-08 17:33:09,894 INFO L226 Difference]: Without dead ends: 1266 [2024-11-08 17:33:09,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:33:09,895 INFO L432 NwaCegarLoop]: 1066 mSDtfsCounter, 27 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3161 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:09,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3161 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:33:09,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2024-11-08 17:33:09,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1266. [2024-11-08 17:33:09,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 792 states have (on average 1.720959595959596) internal successors, (1363), 1256 states have internal predecessors, (1363), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-08 17:33:09,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1377 transitions. [2024-11-08 17:33:09,911 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1377 transitions. Word has length 52 [2024-11-08 17:33:09,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:09,911 INFO L471 AbstractCegarLoop]: Abstraction has 1266 states and 1377 transitions. [2024-11-08 17:33:09,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:09,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1377 transitions. [2024-11-08 17:33:09,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 17:33:09,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:09,912 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:09,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-08 17:33:10,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:10,113 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:33:10,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:10,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1693277959, now seen corresponding path program 1 times [2024-11-08 17:33:10,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:33:10,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90696273] [2024-11-08 17:33:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:10,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:10,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:10,116 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:33:10,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 17:33:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:10,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:33:10,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:10,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:10,536 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:33:10,536 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:33:10,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90696273] [2024-11-08 17:33:10,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90696273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:10,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:10,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:33:10,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281514272] [2024-11-08 17:33:10,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:10,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:33:10,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:33:10,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:33:10,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:33:10,539 INFO L87 Difference]: Start difference. First operand 1266 states and 1377 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:10,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:10,629 INFO L93 Difference]: Finished difference Result 1254 states and 1357 transitions. [2024-11-08 17:33:10,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:33:10,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2024-11-08 17:33:10,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:10,633 INFO L225 Difference]: With dead ends: 1254 [2024-11-08 17:33:10,633 INFO L226 Difference]: Without dead ends: 1254 [2024-11-08 17:33:10,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:33:10,634 INFO L432 NwaCegarLoop]: 1062 mSDtfsCounter, 21 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:10,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 3155 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:33:10,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2024-11-08 17:33:10,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1254. [2024-11-08 17:33:10,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 780 states have (on average 1.721794871794872) internal successors, (1343), 1244 states have internal predecessors, (1343), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-08 17:33:10,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1357 transitions. [2024-11-08 17:33:10,649 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1357 transitions. Word has length 54 [2024-11-08 17:33:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:10,650 INFO L471 AbstractCegarLoop]: Abstraction has 1254 states and 1357 transitions. [2024-11-08 17:33:10,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1357 transitions. [2024-11-08 17:33:10,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 17:33:10,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:10,651 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:10,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-08 17:33:10,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:10,852 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:33:10,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:10,852 INFO L85 PathProgramCache]: Analyzing trace with hash -993669321, now seen corresponding path program 1 times [2024-11-08 17:33:10,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:33:10,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953530147] [2024-11-08 17:33:10,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:10,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:10,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:10,854 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:33:10,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 17:33:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:11,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:33:11,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:11,135 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:33:11,136 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:33:11,137 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:33:11,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2024-11-08 17:33:11,253 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:33:11,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2024-11-08 17:33:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:11,329 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:33:11,329 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:33:11,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953530147] [2024-11-08 17:33:11,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953530147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:11,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:11,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:33:11,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239037461] [2024-11-08 17:33:11,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:11,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:33:11,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:33:11,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:33:11,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:33:11,333 INFO L87 Difference]: Start difference. First operand 1254 states and 1357 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:11,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:11,993 INFO L93 Difference]: Finished difference Result 1924 states and 2076 transitions. [2024-11-08 17:33:11,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:33:11,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-08 17:33:11,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:11,996 INFO L225 Difference]: With dead ends: 1924 [2024-11-08 17:33:11,996 INFO L226 Difference]: Without dead ends: 1921 [2024-11-08 17:33:11,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:33:11,997 INFO L432 NwaCegarLoop]: 1268 mSDtfsCounter, 2153 mSDsluCounter, 3313 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 4581 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:11,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2161 Valid, 4581 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:33:12,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2024-11-08 17:33:12,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1201. [2024-11-08 17:33:12,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 728 states have (on average 1.771978021978022) internal successors, (1290), 1192 states have internal predecessors, (1290), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:33:12,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1302 transitions. [2024-11-08 17:33:12,013 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1302 transitions. Word has length 60 [2024-11-08 17:33:12,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:12,013 INFO L471 AbstractCegarLoop]: Abstraction has 1201 states and 1302 transitions. [2024-11-08 17:33:12,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:12,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1302 transitions. [2024-11-08 17:33:12,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 17:33:12,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:12,014 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:12,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-08 17:33:12,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:12,215 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:33:12,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash 817264941, now seen corresponding path program 1 times [2024-11-08 17:33:12,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:33:12,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416676345] [2024-11-08 17:33:12,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:12,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:12,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:12,217 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:33:12,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 17:33:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:12,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:33:12,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:12,585 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 [2024-11-08 17:33:13,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:33:13,405 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 [2024-11-08 17:33:13,427 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:33:13,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-08 17:33:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:13,431 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:33:13,431 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:33:13,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416676345] [2024-11-08 17:33:13,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416676345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:13,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:13,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:33:13,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662547560] [2024-11-08 17:33:13,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:13,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:33:13,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:33:13,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:33:13,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:33:13,434 INFO L87 Difference]: Start difference. First operand 1201 states and 1302 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:18,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:18,160 INFO L93 Difference]: Finished difference Result 1536 states and 1665 transitions. [2024-11-08 17:33:18,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:33:18,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2024-11-08 17:33:18,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:18,164 INFO L225 Difference]: With dead ends: 1536 [2024-11-08 17:33:18,164 INFO L226 Difference]: Without dead ends: 1536 [2024-11-08 17:33:18,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:33:18,165 INFO L432 NwaCegarLoop]: 521 mSDtfsCounter, 1800 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:18,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1805 Valid, 1004 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-08 17:33:18,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2024-11-08 17:33:18,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1126. [2024-11-08 17:33:18,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 691 states have (on average 1.7047756874095514) internal successors, (1178), 1117 states have internal predecessors, (1178), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:33:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1190 transitions. [2024-11-08 17:33:18,183 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1190 transitions. Word has length 62 [2024-11-08 17:33:18,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:18,183 INFO L471 AbstractCegarLoop]: Abstraction has 1126 states and 1190 transitions. [2024-11-08 17:33:18,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:18,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1190 transitions. [2024-11-08 17:33:18,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 17:33:18,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:18,185 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:18,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-08 17:33:18,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:18,396 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:33:18,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:18,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1492099519, now seen corresponding path program 1 times [2024-11-08 17:33:18,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:33:18,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341594788] [2024-11-08 17:33:18,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:18,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:18,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:18,401 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:33:18,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 17:33:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:18,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:33:18,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:18,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-08 17:33:18,743 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 [2024-11-08 17:33:18,792 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 [2024-11-08 17:33:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:18,811 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:33:18,811 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:33:18,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341594788] [2024-11-08 17:33:18,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341594788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:18,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:18,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:33:18,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552866933] [2024-11-08 17:33:18,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:18,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:33:18,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:33:18,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:33:18,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:33:18,814 INFO L87 Difference]: Start difference. First operand 1126 states and 1190 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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) [2024-11-08 17:33:22,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:22,509 INFO L93 Difference]: Finished difference Result 1125 states and 1189 transitions. [2024-11-08 17:33:22,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:33:22,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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 67 [2024-11-08 17:33:22,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:22,512 INFO L225 Difference]: With dead ends: 1125 [2024-11-08 17:33:22,513 INFO L226 Difference]: Without dead ends: 1125 [2024-11-08 17:33:22,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:33:22,514 INFO L432 NwaCegarLoop]: 1035 mSDtfsCounter, 2 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:22,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2680 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-08 17:33:22,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2024-11-08 17:33:22,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1125. [2024-11-08 17:33:22,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 691 states have (on average 1.703328509406657) internal successors, (1177), 1116 states have internal predecessors, (1177), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:33:22,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1189 transitions. [2024-11-08 17:33:22,530 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1189 transitions. Word has length 67 [2024-11-08 17:33:22,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:22,530 INFO L471 AbstractCegarLoop]: Abstraction has 1125 states and 1189 transitions. [2024-11-08 17:33:22,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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) [2024-11-08 17:33:22,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1189 transitions. [2024-11-08 17:33:22,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 17:33:22,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:22,531 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:22,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-08 17:33:22,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:22,732 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:33:22,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:22,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1492099518, now seen corresponding path program 1 times [2024-11-08 17:33:22,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:33:22,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251099790] [2024-11-08 17:33:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:22,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:22,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:22,736 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:33:22,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 17:33:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:23,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 17:33:23,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:23,108 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 [2024-11-08 17:33:23,138 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 [2024-11-08 17:33:23,161 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 [2024-11-08 17:33:23,238 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 [2024-11-08 17:33:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:23,270 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:33:23,271 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:33:23,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251099790] [2024-11-08 17:33:23,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251099790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:23,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:23,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:33:23,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630345604] [2024-11-08 17:33:23,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:23,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:33:23,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:33:23,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:33:23,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:33:23,273 INFO L87 Difference]: Start difference. First operand 1125 states and 1189 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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) [2024-11-08 17:33:27,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:27,446 INFO L93 Difference]: Finished difference Result 1124 states and 1188 transitions. [2024-11-08 17:33:27,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:33:27,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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 67 [2024-11-08 17:33:27,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:27,449 INFO L225 Difference]: With dead ends: 1124 [2024-11-08 17:33:27,449 INFO L226 Difference]: Without dead ends: 1124 [2024-11-08 17:33:27,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:33:27,450 INFO L432 NwaCegarLoop]: 1035 mSDtfsCounter, 1 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:27,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2687 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-08 17:33:27,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2024-11-08 17:33:27,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1124. [2024-11-08 17:33:27,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 690 states have (on average 1.7043478260869565) internal successors, (1176), 1115 states have internal predecessors, (1176), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:33:27,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1188 transitions. [2024-11-08 17:33:27,464 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1188 transitions. Word has length 67 [2024-11-08 17:33:27,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:27,465 INFO L471 AbstractCegarLoop]: Abstraction has 1124 states and 1188 transitions. [2024-11-08 17:33:27,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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) [2024-11-08 17:33:27,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1188 transitions. [2024-11-08 17:33:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 17:33:27,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:27,466 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:27,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-08 17:33:27,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:27,668 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:33:27,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:27,668 INFO L85 PathProgramCache]: Analyzing trace with hash -980383032, now seen corresponding path program 1 times [2024-11-08 17:33:27,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:33:27,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045554685] [2024-11-08 17:33:27,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:27,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:27,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:27,671 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:33:27,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 17:33:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:27,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:33:27,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:27,990 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 [2024-11-08 17:33:28,100 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 [2024-11-08 17:33:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:28,120 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:33:28,120 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:33:28,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045554685] [2024-11-08 17:33:28,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045554685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:28,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:28,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:33:28,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730757193] [2024-11-08 17:33:28,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:28,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:33:28,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:33:28,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:33:28,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:33:28,124 INFO L87 Difference]: Start difference. First operand 1124 states and 1188 transitions. Second operand has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-11-08 17:33:32,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:32,326 INFO L93 Difference]: Finished difference Result 1136 states and 1203 transitions. [2024-11-08 17:33:32,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:33:32,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 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 75 [2024-11-08 17:33:32,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:32,331 INFO L225 Difference]: With dead ends: 1136 [2024-11-08 17:33:32,331 INFO L226 Difference]: Without dead ends: 1136 [2024-11-08 17:33:32,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:33:32,332 INFO L432 NwaCegarLoop]: 1021 mSDtfsCounter, 12 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3719 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:32,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3719 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-08 17:33:32,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2024-11-08 17:33:32,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1130. [2024-11-08 17:33:32,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 695 states have (on average 1.702158273381295) internal successors, (1183), 1120 states have internal predecessors, (1183), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-08 17:33:32,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1198 transitions. [2024-11-08 17:33:32,346 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1198 transitions. Word has length 75 [2024-11-08 17:33:32,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:32,347 INFO L471 AbstractCegarLoop]: Abstraction has 1130 states and 1198 transitions. [2024-11-08 17:33:32,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-11-08 17:33:32,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1198 transitions. [2024-11-08 17:33:32,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 17:33:32,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:32,348 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:32,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-08 17:33:32,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:32,548 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:33:32,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:32,549 INFO L85 PathProgramCache]: Analyzing trace with hash -980383031, now seen corresponding path program 1 times [2024-11-08 17:33:32,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:33:32,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995833302] [2024-11-08 17:33:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:32,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:32,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:32,553 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:33:32,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-08 17:33:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:32,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:33:32,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:32,913 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:33:32,913 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:33:32,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995833302] [2024-11-08 17:33:32,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995833302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:32,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:32,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:33:32,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314430453] [2024-11-08 17:33:32,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:32,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:33:32,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:33:32,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:33:32,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:33:32,916 INFO L87 Difference]: Start difference. First operand 1130 states and 1198 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-08 17:33:32,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:32,974 INFO L93 Difference]: Finished difference Result 1127 states and 1192 transitions. [2024-11-08 17:33:32,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:33:32,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 75 [2024-11-08 17:33:32,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:32,978 INFO L225 Difference]: With dead ends: 1127 [2024-11-08 17:33:32,979 INFO L226 Difference]: Without dead ends: 1127 [2024-11-08 17:33:32,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:33:32,980 INFO L432 NwaCegarLoop]: 1035 mSDtfsCounter, 0 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3100 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 [2024-11-08 17:33:32,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3100 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:33:32,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2024-11-08 17:33:32,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1127. [2024-11-08 17:33:32,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 692 states have (on average 1.703757225433526) internal successors, (1179), 1118 states have internal predecessors, (1179), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 17:33:32,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1192 transitions. [2024-11-08 17:33:32,998 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1192 transitions. Word has length 75 [2024-11-08 17:33:32,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:32,998 INFO L471 AbstractCegarLoop]: Abstraction has 1127 states and 1192 transitions. [2024-11-08 17:33:32,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-08 17:33:32,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1192 transitions. [2024-11-08 17:33:32,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 17:33:32,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:33,000 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:33,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-08 17:33:33,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:33,201 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:33:33,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:33,202 INFO L85 PathProgramCache]: Analyzing trace with hash 428305549, now seen corresponding path program 1 times [2024-11-08 17:33:33,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:33:33,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726718073] [2024-11-08 17:33:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:33,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:33,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:33,205 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:33:33,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-08 17:33:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:33,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:33:33,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:33,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:33:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:33,775 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:33:33,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726718073] [2024-11-08 17:33:33,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726718073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:33:33,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:33:33,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-08 17:33:33,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411463020] [2024-11-08 17:33:33,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:33:33,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:33:33,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:33:33,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:33:33,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:33:33,783 INFO L87 Difference]: Start difference. First operand 1127 states and 1192 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2024-11-08 17:33:34,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:34,011 INFO L93 Difference]: Finished difference Result 1139 states and 1209 transitions. [2024-11-08 17:33:34,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:33:34,013 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 76 [2024-11-08 17:33:34,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:34,016 INFO L225 Difference]: With dead ends: 1139 [2024-11-08 17:33:34,016 INFO L226 Difference]: Without dead ends: 1139 [2024-11-08 17:33:34,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:33:34,017 INFO L432 NwaCegarLoop]: 1035 mSDtfsCounter, 5 mSDsluCounter, 4126 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5161 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:34,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 5161 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:33:34,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2024-11-08 17:33:34,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1137. [2024-11-08 17:33:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 701 states have (on average 1.703281027104137) internal successors, (1194), 1127 states have internal predecessors, (1194), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 17:33:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1207 transitions. [2024-11-08 17:33:34,037 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1207 transitions. Word has length 76 [2024-11-08 17:33:34,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:34,037 INFO L471 AbstractCegarLoop]: Abstraction has 1137 states and 1207 transitions. [2024-11-08 17:33:34,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2024-11-08 17:33:34,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1207 transitions. [2024-11-08 17:33:34,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-08 17:33:34,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:34,039 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:34,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-08 17:33:34,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:34,242 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:33:34,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:34,242 INFO L85 PathProgramCache]: Analyzing trace with hash 2099074056, now seen corresponding path program 2 times [2024-11-08 17:33:34,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:33:34,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790915764] [2024-11-08 17:33:34,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:33:34,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:34,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:34,245 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:33:34,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-08 17:33:54,619 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:33:54,619 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:33:54,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 17:33:54,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:54,821 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:33:54,821 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 [2024-11-08 17:33:54,847 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 [2024-11-08 17:33:55,120 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:33:55,120 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 [2024-11-08 17:33:55,187 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 [2024-11-08 17:33:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:33:55,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:33:55,348 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-08 17:33:55,348 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 [2024-11-08 17:33:55,358 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1445 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1445) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2024-11-08 17:33:55,361 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:33:55,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790915764] [2024-11-08 17:33:55,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790915764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:33:55,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [538512083] [2024-11-08 17:33:55,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:33:55,361 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 17:33:55,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 17:33:55,363 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 17:33:55,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-08 17:33:57,111 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:33:57,111 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:33:57,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:33:57,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:57,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:57,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:33:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:57,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [538512083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:33:57,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:33:57,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-11-08 17:33:57,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777244435] [2024-11-08 17:33:57,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:33:57,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 17:33:57,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:33:57,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 17:33:57,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2024-11-08 17:33:57,725 INFO L87 Difference]: Start difference. First operand 1137 states and 1207 transitions. Second operand has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 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) [2024-11-08 17:34:11,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:34:11,326 INFO L93 Difference]: Finished difference Result 1526 states and 1631 transitions. [2024-11-08 17:34:11,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 17:34:11,326 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 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 79 [2024-11-08 17:34:11,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:34:11,330 INFO L225 Difference]: With dead ends: 1526 [2024-11-08 17:34:11,330 INFO L226 Difference]: Without dead ends: 1522 [2024-11-08 17:34:11,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=413, Invalid=2242, Unknown=1, NotChecked=100, Total=2756 [2024-11-08 17:34:11,331 INFO L432 NwaCegarLoop]: 675 mSDtfsCounter, 774 mSDsluCounter, 7779 mSDsCounter, 0 mSdLazyCounter, 6037 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 8454 SdHoareTripleChecker+Invalid, 6060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 6037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:34:11,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 8454 Invalid, 6060 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 6037 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2024-11-08 17:34:11,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2024-11-08 17:34:11,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1145. [2024-11-08 17:34:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 710 states have (on average 1.6971830985915493) internal successors, (1205), 1135 states have internal predecessors, (1205), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 17:34:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1218 transitions. [2024-11-08 17:34:11,351 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1218 transitions. Word has length 79 [2024-11-08 17:34:11,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:34:11,352 INFO L471 AbstractCegarLoop]: Abstraction has 1145 states and 1218 transitions. [2024-11-08 17:34:11,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 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) [2024-11-08 17:34:11,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1218 transitions. [2024-11-08 17:34:11,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-08 17:34:11,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:34:11,354 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:34:11,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-08 17:34:11,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2024-11-08 17:34:11,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt [2024-11-08 17:34:11,754 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:34:11,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:34:11,755 INFO L85 PathProgramCache]: Analyzing trace with hash 680334825, now seen corresponding path program 1 times [2024-11-08 17:34:11,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:34:11,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85408438] [2024-11-08 17:34:11,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:34:11,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:34:11,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:34:11,757 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:34:11,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-08 17:34:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:34:12,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 17:34:12,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:34:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:34:12,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:34:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:34:13,200 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:34:13,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85408438] [2024-11-08 17:34:13,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85408438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:34:13,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:34:13,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-08 17:34:13,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181756031] [2024-11-08 17:34:13,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:34:13,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 17:34:13,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:34:13,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 17:34:13,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-08 17:34:13,203 INFO L87 Difference]: Start difference. First operand 1145 states and 1218 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 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) [2024-11-08 17:34:15,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:34:15,695 INFO L93 Difference]: Finished difference Result 1169 states and 1257 transitions. [2024-11-08 17:34:15,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 17:34:15,696 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 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 85 [2024-11-08 17:34:15,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:34:15,699 INFO L225 Difference]: With dead ends: 1169 [2024-11-08 17:34:15,699 INFO L226 Difference]: Without dead ends: 1163 [2024-11-08 17:34:15,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 17:34:15,700 INFO L432 NwaCegarLoop]: 1035 mSDtfsCounter, 15 mSDsluCounter, 12381 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 13416 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:34:15,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 13416 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 17:34:15,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2024-11-08 17:34:15,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1163. [2024-11-08 17:34:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 728 states have (on average 1.6868131868131868) internal successors, (1228), 1153 states have internal predecessors, (1228), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 17:34:15,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1241 transitions. [2024-11-08 17:34:15,718 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1241 transitions. Word has length 85 [2024-11-08 17:34:15,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:34:15,718 INFO L471 AbstractCegarLoop]: Abstraction has 1163 states and 1241 transitions. [2024-11-08 17:34:15,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 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) [2024-11-08 17:34:15,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1241 transitions. [2024-11-08 17:34:15,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-08 17:34:15,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:34:15,720 INFO L215 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:34:15,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-08 17:34:15,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:34:15,921 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:34:15,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:34:15,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1739071063, now seen corresponding path program 2 times [2024-11-08 17:34:15,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:34:15,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1933915825] [2024-11-08 17:34:15,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:34:15,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:34:15,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:34:15,925 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:34:15,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-08 17:34:41,994 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:34:41,994 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:34:42,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-08 17:34:42,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:34:42,192 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:34:42,193 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 [2024-11-08 17:34:42,201 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 [2024-11-08 17:34:42,255 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 [2024-11-08 17:34:42,268 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 [2024-11-08 17:34:42,435 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 [2024-11-08 17:34:42,443 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 [2024-11-08 17:34:43,084 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:34:43,084 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 [2024-11-08 17:34:43,094 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 [2024-11-08 17:34:43,153 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 [2024-11-08 17:34:43,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-08 17:34:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-08 17:34:43,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:34:43,795 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2071 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2071) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_2071 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2072 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2071) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2072) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 17:34:43,801 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:34:43,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933915825] [2024-11-08 17:34:43,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933915825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:34:43,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [994140525] [2024-11-08 17:34:43,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:34:43,801 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 17:34:43,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 17:34:43,802 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 17:34:43,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-08 17:34:45,688 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:34:45,688 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:34:45,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 17:34:45,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:34:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:34:46,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:34:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:34:49,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [994140525] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:34:49,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:34:49,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2024-11-08 17:34:49,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555423256] [2024-11-08 17:34:49,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:34:49,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-08 17:34:49,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:34:49,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-08 17:34:49,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2024-11-08 17:34:49,438 INFO L87 Difference]: Start difference. First operand 1163 states and 1241 transitions. Second operand has 58 states, 57 states have (on average 3.1403508771929824) internal successors, (179), 58 states have internal predecessors, (179), 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) [2024-11-08 17:35:27,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:35:27,647 INFO L93 Difference]: Finished difference Result 1579 states and 1715 transitions. [2024-11-08 17:35:27,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-08 17:35:27,648 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.1403508771929824) internal successors, (179), 58 states have internal predecessors, (179), 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 97 [2024-11-08 17:35:27,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:35:27,651 INFO L225 Difference]: With dead ends: 1579 [2024-11-08 17:35:27,651 INFO L226 Difference]: Without dead ends: 1571 [2024-11-08 17:35:27,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3088 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=3106, Invalid=14987, Unknown=1, NotChecked=266, Total=18360 [2024-11-08 17:35:27,655 INFO L432 NwaCegarLoop]: 681 mSDtfsCounter, 803 mSDsluCounter, 19861 mSDsCounter, 0 mSdLazyCounter, 15955 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 20542 SdHoareTripleChecker+Invalid, 16035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 15955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:35:27,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 20542 Invalid, 16035 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 15955 Invalid, 0 Unknown, 0 Unchecked, 29.4s Time] [2024-11-08 17:35:27,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2024-11-08 17:35:27,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1196. [2024-11-08 17:35:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 762 states have (on average 1.6653543307086613) internal successors, (1269), 1186 states have internal predecessors, (1269), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 17:35:27,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1282 transitions. [2024-11-08 17:35:27,671 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1282 transitions. Word has length 97 [2024-11-08 17:35:27,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:35:27,672 INFO L471 AbstractCegarLoop]: Abstraction has 1196 states and 1282 transitions. [2024-11-08 17:35:27,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.1403508771929824) internal successors, (179), 58 states have internal predecessors, (179), 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) [2024-11-08 17:35:27,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1282 transitions. [2024-11-08 17:35:27,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-08 17:35:27,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:35:27,674 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:35:27,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-08 17:35:27,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2024-11-08 17:35:28,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt [2024-11-08 17:35:28,075 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:35:28,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:35:28,075 INFO L85 PathProgramCache]: Analyzing trace with hash 101695668, now seen corresponding path program 1 times [2024-11-08 17:35:28,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:35:28,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071576314] [2024-11-08 17:35:28,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:35:28,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:35:28,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:35:28,077 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:35:28,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-08 17:35:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:28,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-08 17:35:28,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:35:28,737 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:35:28,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-08 17:35:28,755 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 [2024-11-08 17:35:29,122 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:35:29,122 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 [2024-11-08 17:35:29,187 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:35:29,187 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 [2024-11-08 17:35:29,238 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 [2024-11-08 17:35:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 17:35:29,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:35:29,315 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-08 17:35:29,315 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 [2024-11-08 17:35:29,370 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2730 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2730) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-08 17:35:29,816 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2776 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2730 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2776)) (.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_2730) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-08 17:35:29,819 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:35:29,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071576314] [2024-11-08 17:35:29,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071576314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:35:29,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1008644007] [2024-11-08 17:35:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:35:29,819 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 17:35:29,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 17:35:29,820 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 17:35:29,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-08 17:35:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:33,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-08 17:35:33,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:35:33,192 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 [2024-11-08 17:35:33,331 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-08 17:35:33,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-08 17:35:33,397 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 [2024-11-08 17:35:33,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-08 17:35:34,700 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:35:34,700 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 [2024-11-08 17:35:34,860 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:35:34,861 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 [2024-11-08 17:35:34,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-08 17:35:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 17:35:34,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:35:34,987 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3199 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3199) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-08 17:35:34,996 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3199 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3199) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-08 17:35:35,412 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3199 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3245 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3245))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3199)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 17:35:35,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1008644007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:35:35,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:35:35,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2024-11-08 17:35:35,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940431023] [2024-11-08 17:35:35,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:35:35,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 17:35:35,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:35:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 17:35:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=311, Unknown=12, NotChecked=200, Total=600 [2024-11-08 17:35:35,416 INFO L87 Difference]: Start difference. First operand 1196 states and 1282 transitions. Second operand has 18 states, 15 states have (on average 6.666666666666667) internal successors, (100), 18 states have internal predecessors, (100), 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) [2024-11-08 17:35:47,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:35:47,663 INFO L93 Difference]: Finished difference Result 1570 states and 1684 transitions. [2024-11-08 17:35:47,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:35:47,663 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 6.666666666666667) internal successors, (100), 18 states have internal predecessors, (100), 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 [2024-11-08 17:35:47,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:35:47,665 INFO L225 Difference]: With dead ends: 1570 [2024-11-08 17:35:47,665 INFO L226 Difference]: Without dead ends: 1570 [2024-11-08 17:35:47,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=342, Unknown=12, NotChecked=210, Total=650 [2024-11-08 17:35:47,666 INFO L432 NwaCegarLoop]: 677 mSDtfsCounter, 710 mSDsluCounter, 7104 mSDsCounter, 0 mSdLazyCounter, 6168 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 7781 SdHoareTripleChecker+Invalid, 6178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 6168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:35:47,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 7781 Invalid, 6178 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 6168 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2024-11-08 17:35:47,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2024-11-08 17:35:47,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1195. [2024-11-08 17:35:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 762 states have (on average 1.6640419947506562) internal successors, (1268), 1185 states have internal predecessors, (1268), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 17:35:47,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1281 transitions. [2024-11-08 17:35:47,682 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1281 transitions. Word has length 122 [2024-11-08 17:35:47,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:35:47,682 INFO L471 AbstractCegarLoop]: Abstraction has 1195 states and 1281 transitions. [2024-11-08 17:35:47,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 6.666666666666667) internal successors, (100), 18 states have internal predecessors, (100), 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) [2024-11-08 17:35:47,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1281 transitions. [2024-11-08 17:35:47,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-08 17:35:47,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:35:47,684 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:35:47,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2024-11-08 17:35:47,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-08 17:35:48,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:35:48,085 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:35:48,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:35:48,085 INFO L85 PathProgramCache]: Analyzing trace with hash 101695669, now seen corresponding path program 1 times [2024-11-08 17:35:48,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:35:48,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136578685] [2024-11-08 17:35:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:35:48,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:35:48,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:35:48,089 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:35:48,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-08 17:35:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:48,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-08 17:35:48,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:35:48,858 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 [2024-11-08 17:35:48,875 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:35:48,875 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 [2024-11-08 17:35:48,929 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 [2024-11-08 17:35:48,934 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 [2024-11-08 17:35:49,067 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 [2024-11-08 17:35:49,073 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 [2024-11-08 17:35:49,917 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:35:49,918 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 [2024-11-08 17:35:49,932 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 [2024-11-08 17:35:50,055 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:35:50,055 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 [2024-11-08 17:35:50,062 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 [2024-11-08 17:35:50,096 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 [2024-11-08 17:35:50,102 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 [2024-11-08 17:35:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 17:35:50,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:35:50,320 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3714 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3714) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-08 17:35:50,354 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3714 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_3714) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-08 17:35:51,799 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3714 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3806 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3805 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3805))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3806) .cse0 v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_3714) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3806 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3805 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3806) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3805) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2024-11-08 17:35:51,809 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:35:51,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136578685] [2024-11-08 17:35:51,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136578685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:35:51,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [225879159] [2024-11-08 17:35:51,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:35:51,810 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 17:35:51,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 17:35:51,813 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 17:35:51,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-08 17:37:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:14,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-08 17:37:14,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:14,230 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 [2024-11-08 17:37:14,370 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 [2024-11-08 17:37:14,383 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:37:14,383 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 [2024-11-08 17:37:14,394 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 [2024-11-08 17:37:14,403 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 [2024-11-08 17:37:14,486 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 [2024-11-08 17:37:14,491 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 [2024-11-08 17:37:15,248 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:37:15,248 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 [2024-11-08 17:37:15,257 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 [2024-11-08 17:37:15,342 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:37:15,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-08 17:37:15,355 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 [2024-11-08 17:37:15,382 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 [2024-11-08 17:37:15,386 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 [2024-11-08 17:37:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 17:37:15,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:37:15,575 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_4276 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4275 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_4276) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_4275) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_4276 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_4276) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2024-11-08 17:37:16,988 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4368 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4367 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4276 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4275 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4368))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4367) .cse0 v_ArrVal_4276) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_4275) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_4368 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4367 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4276 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4367) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4368) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4276) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv4 32)) (bvadd .cse3 (_ bv8 32))))))) is different from false [2024-11-08 17:37:16,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [225879159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:16,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:37:16,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-08 17:37:16,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165859414] [2024-11-08 17:37:16,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:37:16,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 17:37:16,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:37:16,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 17:37:16,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=122, Unknown=13, NotChecked=130, Total=306 [2024-11-08 17:37:16,997 INFO L87 Difference]: Start difference. First operand 1195 states and 1281 transitions. Second operand has 10 states, 8 states have (on average 10.25) internal successors, (82), 10 states have internal predecessors, (82), 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) [2024-11-08 17:37:26,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:37:26,121 INFO L93 Difference]: Finished difference Result 1567 states and 1681 transitions. [2024-11-08 17:37:26,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:37:26,122 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 10.25) internal successors, (82), 10 states have internal predecessors, (82), 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 [2024-11-08 17:37:26,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:37:26,124 INFO L225 Difference]: With dead ends: 1567 [2024-11-08 17:37:26,124 INFO L226 Difference]: Without dead ends: 1567 [2024-11-08 17:37:26,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 237 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=238, Unknown=15, NotChecked=180, Total=506 [2024-11-08 17:37:26,125 INFO L432 NwaCegarLoop]: 681 mSDtfsCounter, 711 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 3910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:37:26,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 2984 Invalid, 3910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-11-08 17:37:26,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2024-11-08 17:37:26,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1194. [2024-11-08 17:37:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 762 states have (on average 1.662729658792651) internal successors, (1267), 1184 states have internal predecessors, (1267), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 17:37:26,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1280 transitions. [2024-11-08 17:37:26,140 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1280 transitions. Word has length 122 [2024-11-08 17:37:26,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:37:26,141 INFO L471 AbstractCegarLoop]: Abstraction has 1194 states and 1280 transitions. [2024-11-08 17:37:26,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 10.25) internal successors, (82), 10 states have internal predecessors, (82), 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) [2024-11-08 17:37:26,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1280 transitions. [2024-11-08 17:37:26,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 17:37:26,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:37:26,142 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:26,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-08 17:37:26,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2024-11-08 17:37:26,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt [2024-11-08 17:37:26,543 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:37:26,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:26,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1664019503, now seen corresponding path program 1 times [2024-11-08 17:37:26,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:37:26,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1971723743] [2024-11-08 17:37:26,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:26,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:26,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:26,545 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:37:26,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-08 17:37:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:27,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-08 17:37:27,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:27,230 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 [2024-11-08 17:37:27,397 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:37:27,397 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 [2024-11-08 17:37:27,409 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 [2024-11-08 17:37:27,722 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:37:27,722 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 [2024-11-08 17:37:27,785 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:37:27,785 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 [2024-11-08 17:37:27,856 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:37:27,857 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 [2024-11-08 17:37:27,909 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 [2024-11-08 17:37:27,961 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 17:37:27,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:37:28,020 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-08 17:37:28,020 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 [2024-11-08 17:37:28,028 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4806 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4806) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem39#1.base|)) is different from false [2024-11-08 17:37:28,038 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4806 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_4806) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-08 17:37:28,056 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4805 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4806 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4805)) (.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_4806) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2024-11-08 17:37:28,069 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4805 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4806 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4805))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_4806) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-08 17:37:28,479 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4805 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4852 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4806 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4852))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4805)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_4806) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-08 17:37:28,481 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:37:28,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971723743] [2024-11-08 17:37:28,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971723743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:28,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1953540420] [2024-11-08 17:37:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:28,482 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 17:37:28,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 17:37:28,483 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 17:37:28,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2024-11-08 17:37:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:46,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-08 17:37:46,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:46,874 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 [2024-11-08 17:37:47,017 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-08 17:37:47,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-08 17:37:47,069 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 [2024-11-08 17:37:47,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-08 17:37:48,167 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:37:48,168 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 [2024-11-08 17:37:48,317 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:37:48,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-08 17:37:48,414 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:37:48,415 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 [2024-11-08 17:37:48,441 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 [2024-11-08 17:37:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 17:37:48,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:37:48,508 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5291 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5291) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-08 17:37:48,516 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5291 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5291) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-08 17:37:48,537 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5290 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5291 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5290))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5291)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 17:37:48,550 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5290 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5291 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5290))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5291)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 17:37:48,952 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5337 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5290 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5291 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5337))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5290)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5291)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 17:37:48,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1953540420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:48,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:37:48,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-11-08 17:37:48,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123513167] [2024-11-08 17:37:48,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:37:48,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 17:37:48,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:37:48,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 17:37:48,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=356, Unknown=10, NotChecked=470, Total=930 [2024-11-08 17:37:48,957 INFO L87 Difference]: Start difference. First operand 1194 states and 1280 transitions. Second operand has 20 states, 17 states have (on average 6.0) internal successors, (102), 20 states have internal predecessors, (102), 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) [2024-11-08 17:37:58,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:37:58,789 INFO L93 Difference]: Finished difference Result 1568 states and 1682 transitions. [2024-11-08 17:37:58,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:37:58,789 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 6.0) internal successors, (102), 20 states have internal predecessors, (102), 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 [2024-11-08 17:37:58,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:37:58,791 INFO L225 Difference]: With dead ends: 1568 [2024-11-08 17:37:58,791 INFO L226 Difference]: Without dead ends: 1568 [2024-11-08 17:37:58,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=389, Unknown=10, NotChecked=490, Total=992 [2024-11-08 17:37:58,792 INFO L432 NwaCegarLoop]: 675 mSDtfsCounter, 707 mSDsluCounter, 5544 mSDsCounter, 0 mSdLazyCounter, 4843 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 6219 SdHoareTripleChecker+Invalid, 4854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:37:58,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 6219 Invalid, 4854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 4843 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2024-11-08 17:37:58,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2024-11-08 17:37:58,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1193. [2024-11-08 17:37:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 762 states have (on average 1.6614173228346456) internal successors, (1266), 1183 states have internal predecessors, (1266), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 17:37:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1279 transitions. [2024-11-08 17:37:58,806 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1279 transitions. Word has length 125 [2024-11-08 17:37:58,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:37:58,807 INFO L471 AbstractCegarLoop]: Abstraction has 1193 states and 1279 transitions. [2024-11-08 17:37:58,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 6.0) internal successors, (102), 20 states have internal predecessors, (102), 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) [2024-11-08 17:37:58,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1279 transitions. [2024-11-08 17:37:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 17:37:58,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:37:58,808 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:58,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-08 17:37:59,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2024-11-08 17:37:59,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt [2024-11-08 17:37:59,209 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:37:59,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:59,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1664019504, now seen corresponding path program 1 times [2024-11-08 17:37:59,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:37:59,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503738301] [2024-11-08 17:37:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:59,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:59,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:59,211 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:37:59,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-08 17:37:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:59,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-08 17:37:59,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:59,947 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 [2024-11-08 17:38:00,083 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:38:00,083 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 [2024-11-08 17:38:00,089 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 [2024-11-08 17:38:00,120 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 [2024-11-08 17:38:00,129 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 [2024-11-08 17:38:00,225 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 [2024-11-08 17:38:00,230 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 [2024-11-08 17:38:01,002 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:38:01,003 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 [2024-11-08 17:38:01,016 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 [2024-11-08 17:38:01,142 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:38:01,143 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 [2024-11-08 17:38:01,156 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 [2024-11-08 17:38:01,254 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:38:01,255 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 [2024-11-08 17:38:01,269 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 [2024-11-08 17:38:01,296 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 [2024-11-08 17:38:01,301 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 [2024-11-08 17:38:01,330 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 17:38:01,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:38:01,593 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5823 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5824 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5824) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5823) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5824 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5824) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd (_ bv12 32) .cse2))))))) is different from false [2024-11-08 17:38:01,691 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5821 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5822 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5823 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5824 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5822))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5821) .cse0 v_ArrVal_5824) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5823) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5821 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5822 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5824 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5821) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5822) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5824) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd (_ bv12 32) .cse3)))))) is different from false [2024-11-08 17:38:01,751 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5821 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5822 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5823 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5824 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5822))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5821) .cse1 v_ArrVal_5824) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5823) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_5821 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5822 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5824 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5821) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5822) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5824) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-08 17:38:04,897 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:38:04,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503738301] [2024-11-08 17:38:04,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503738301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:38:04,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [56126271] [2024-11-08 17:38:04,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:38:04,898 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 17:38:04,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 17:38:04,899 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 17:38:04,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2024-11-08 17:40:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:40:03,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-08 17:40:03,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:40:03,973 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 [2024-11-08 17:40:04,390 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 [2024-11-08 17:40:04,425 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:40:04,425 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 [2024-11-08 17:40:04,449 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 [2024-11-08 17:40:04,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:40:04,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-08 17:40:04,606 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 [2024-11-08 17:40:06,232 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:40:06,232 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 [2024-11-08 17:40:06,241 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 [2024-11-08 17:40:06,383 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:40:06,383 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 [2024-11-08 17:40:06,399 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 [2024-11-08 17:40:06,521 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:40:06,522 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 [2024-11-08 17:40:06,532 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 [2024-11-08 17:40:06,589 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 [2024-11-08 17:40:06,598 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 [2024-11-08 17:40:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 17:40:06,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:40:06,700 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6402 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6402) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 17:40:06,739 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6402 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6402) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-08 17:40:06,847 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6400 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6401 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6402 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6401))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6400) .cse0 v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_6402) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_6400 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6401 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6400) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6401) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv8 32)) (bvadd .cse3 (_ bv12 32))))))) is different from false [2024-11-08 17:40:06,929 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6400 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6401 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6402 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_6401))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_6400) .cse1 v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_6402) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_6400 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6401 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_6400) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_6401) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-08 17:40:09,071 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6494 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6400 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6401 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6495 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6495))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6494) .cse1 v_ArrVal_6400) (select (select (store .cse2 .cse1 v_ArrVal_6401) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_6403))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6494 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6400 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6401 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6402 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6495 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6495))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_6401))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6494) .cse4 v_ArrVal_6400) .cse5 v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_6402) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-08 17:40:09,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [56126271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:40:09,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:40:09,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-11-08 17:40:09,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835594831] [2024-11-08 17:40:09,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:40:09,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:40:09,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:40:09,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:40:09,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=165, Unknown=23, NotChecked=264, Total=506 [2024-11-08 17:40:09,088 INFO L87 Difference]: Start difference. First operand 1193 states and 1279 transitions. Second operand has 11 states, 9 states have (on average 9.0) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-11-08 17:40:32,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:40:32,589 INFO L93 Difference]: Finished difference Result 1565 states and 1679 transitions. [2024-11-08 17:40:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:40:32,590 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.0) internal successors, (81), 11 states have internal predecessors, (81), 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 [2024-11-08 17:40:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:40:32,591 INFO L225 Difference]: With dead ends: 1565 [2024-11-08 17:40:32,591 INFO L226 Difference]: Without dead ends: 1565 [2024-11-08 17:40:32,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 244 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=94, Invalid=335, Unknown=23, NotChecked=360, Total=812 [2024-11-08 17:40:32,592 INFO L432 NwaCegarLoop]: 681 mSDtfsCounter, 709 mSDsluCounter, 3081 mSDsCounter, 0 mSdLazyCounter, 5203 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 3762 SdHoareTripleChecker+Invalid, 5210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 5203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:40:32,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 3762 Invalid, 5210 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 5203 Invalid, 0 Unknown, 0 Unchecked, 22.3s Time] [2024-11-08 17:40:32,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2024-11-08 17:40:32,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1192. [2024-11-08 17:40:32,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 762 states have (on average 1.6601049868766404) internal successors, (1265), 1182 states have internal predecessors, (1265), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 17:40:32,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1278 transitions. [2024-11-08 17:40:32,603 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1278 transitions. Word has length 125 [2024-11-08 17:40:32,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:40:32,603 INFO L471 AbstractCegarLoop]: Abstraction has 1192 states and 1278 transitions. [2024-11-08 17:40:32,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.0) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-11-08 17:40:32,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1278 transitions. [2024-11-08 17:40:32,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-08 17:40:32,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:40:32,605 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:40:32,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2024-11-08 17:40:32,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-08 17:40:33,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:33,005 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:40:33,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:40:33,006 INFO L85 PathProgramCache]: Analyzing trace with hash 292808187, now seen corresponding path program 1 times [2024-11-08 17:40:33,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:40:33,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147874638] [2024-11-08 17:40:33,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:40:33,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:33,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:40:33,009 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:40:33,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-08 17:40:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:40:33,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-08 17:40:33,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:40:33,826 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 [2024-11-08 17:40:34,235 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:40:34,235 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 [2024-11-08 17:40:34,268 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 [2024-11-08 17:40:35,023 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:40:35,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-08 17:40:35,156 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:40:35,156 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 [2024-11-08 17:40:35,294 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:40:35,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-08 17:40:35,436 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:40:35,436 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 [2024-11-08 17:40:35,549 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 [2024-11-08 17:40:35,615 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 17:40:35,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:40:35,734 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-08 17:40:35,734 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 [2024-11-08 17:40:35,748 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6949 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem40#1.base| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6949) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2024-11-08 17:40:35,764 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6949 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_6949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse0)))) is different from false [2024-11-08 17:40:35,790 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6948 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6949 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6948)) (.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_6949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-08 17:40:35,809 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6948 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6949 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6948))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-08 17:40:35,853 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6947 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6948 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6949 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6947))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6948)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-08 17:40:35,873 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6947 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6948 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6949 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6947))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6948)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-08 17:40:36,520 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6947 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6948 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6949 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6995 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6995))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6947)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6948)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-08 17:40:36,524 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:40:36,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147874638] [2024-11-08 17:40:36,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147874638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:40:36,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [798584899] [2024-11-08 17:40:36,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:40:36,525 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 17:40:36,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 17:40:36,526 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 17:40:36,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2024-11-08 17:41:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:41:12,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-08 17:41:12,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:41:12,619 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 [2024-11-08 17:41:13,081 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-08 17:41:13,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-08 17:41:13,235 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 [2024-11-08 17:41:13,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-08 17:41:15,782 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:41:15,783 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 [2024-11-08 17:41:16,100 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:41:16,100 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 [2024-11-08 17:41:16,333 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:41:16,333 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 [2024-11-08 17:41:16,576 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:41:16,576 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 [2024-11-08 17:41:16,629 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 [2024-11-08 17:41:16,765 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 17:41:16,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:41:16,989 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7450 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7450) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-08 17:41:17,022 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7450 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7449 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7449))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7450)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 17:41:17,040 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7450 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7449 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7449))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7450)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 17:41:17,074 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7450 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7448 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7448))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7449)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7450)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 17:41:17,095 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7450 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7448 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7448))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7449)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7450)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 17:41:17,742 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7450 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7448 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7496 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7496))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7448)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7449)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7450)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 17:41:17,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [798584899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:41:17,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:41:17,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2024-11-08 17:41:17,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561795990] [2024-11-08 17:41:17,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:41:17,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 17:41:17,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:41:17,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 17:41:17,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=467, Unknown=23, NotChecked=728, Total=1332 [2024-11-08 17:41:17,750 INFO L87 Difference]: Start difference. First operand 1192 states and 1278 transitions. Second operand has 22 states, 19 states have (on average 5.684210526315789) internal successors, (108), 22 states have internal predecessors, (108), 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) [2024-11-08 17:41:33,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:41:33,719 INFO L93 Difference]: Finished difference Result 1566 states and 1680 transitions. [2024-11-08 17:41:33,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:41:33,720 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 5.684210526315789) internal successors, (108), 22 states have internal predecessors, (108), 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 128 [2024-11-08 17:41:33,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:41:33,721 INFO L225 Difference]: With dead ends: 1566 [2024-11-08 17:41:33,721 INFO L226 Difference]: Without dead ends: 1566 [2024-11-08 17:41:33,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=123, Invalid=506, Unknown=23, NotChecked=754, Total=1406 [2024-11-08 17:41:33,722 INFO L432 NwaCegarLoop]: 674 mSDtfsCounter, 710 mSDsluCounter, 4457 mSDsCounter, 0 mSdLazyCounter, 3871 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 5131 SdHoareTripleChecker+Invalid, 3887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:41:33,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 5131 Invalid, 3887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3871 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time] [2024-11-08 17:41:33,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2024-11-08 17:41:33,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1191. [2024-11-08 17:41:33,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 762 states have (on average 1.6587926509186353) internal successors, (1264), 1181 states have internal predecessors, (1264), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 17:41:33,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1277 transitions. [2024-11-08 17:41:33,747 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1277 transitions. Word has length 128 [2024-11-08 17:41:33,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:41:33,747 INFO L471 AbstractCegarLoop]: Abstraction has 1191 states and 1277 transitions. [2024-11-08 17:41:33,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 5.684210526315789) internal successors, (108), 22 states have internal predecessors, (108), 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) [2024-11-08 17:41:33,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1277 transitions. [2024-11-08 17:41:33,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-08 17:41:33,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:41:33,748 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:41:33,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-08 17:41:33,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (42)] Forceful destruction successful, exit code 0 [2024-11-08 17:41:34,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt [2024-11-08 17:41:34,149 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:41:34,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:41:34,150 INFO L85 PathProgramCache]: Analyzing trace with hash 292808188, now seen corresponding path program 1 times [2024-11-08 17:41:34,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:41:34,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572032488] [2024-11-08 17:41:34,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:41:34,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:41:34,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:41:34,153 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:41:34,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-08 17:41:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:41:34,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-08 17:41:35,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:41:35,391 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:41:35,391 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 [2024-11-08 17:41:35,405 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 [2024-11-08 17:41:35,456 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 [2024-11-08 17:41:35,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:41:35,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-08 17:41:35,709 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 [2024-11-08 17:41:37,265 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:41:37,265 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 [2024-11-08 17:41:37,278 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 [2024-11-08 17:41:37,524 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:41:37,525 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 [2024-11-08 17:41:37,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:41:37,743 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:41:37,744 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 [2024-11-08 17:41:37,764 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 [2024-11-08 17:41:37,967 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:41:37,967 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 [2024-11-08 17:41:37,977 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 [2024-11-08 17:41:38,031 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 [2024-11-08 17:41:38,046 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 [2024-11-08 17:41:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 17:41:38,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:41:38,576 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_7998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7999 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_7998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_7999) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-08 17:41:38,702 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7997 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7996 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7996) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7997) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7999 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7997 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7996 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7997))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7996) .cse2 v_ArrVal_7998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_7999) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-08 17:41:38,759 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7999 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7997 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7996 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_7997))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_7996) .cse1 v_ArrVal_7998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7999) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7997 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7996 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_7996) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_7997) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse4) (bvadd (_ bv24 32) .cse4))))))) is different from false [2024-11-08 17:41:38,973 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7999 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7997 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7996 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7994 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7994))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_7997))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7995) .cse0 v_ArrVal_7996) .cse1 v_ArrVal_7998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7999) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7997 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7996 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7994 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7994))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7995) .cse6 v_ArrVal_7996) (select (select (store .cse7 .cse6 v_ArrVal_7997) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7998))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse5) (bvadd (_ bv24 32) .cse5)))))) is different from false [2024-11-08 17:41:46,314 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7999 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7997 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7996 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7994 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8090))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_7994))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_7997))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8091) .cse0 v_ArrVal_7995) .cse1 v_ArrVal_7996) .cse2 v_ArrVal_7998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_7999) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7997 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7996 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7994 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8090))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_7994))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8091) .cse8 v_ArrVal_7995) .cse9 v_ArrVal_7996) (select (select (store .cse10 .cse9 v_ArrVal_7997) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7998))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse7) (bvadd (_ bv24 32) .cse7)))))) is different from false [2024-11-08 17:41:46,334 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:41:46,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572032488] [2024-11-08 17:41:46,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572032488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:41:46,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [696466877] [2024-11-08 17:41:46,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:41:46,335 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 17:41:46,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 17:41:46,336 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 17:41:46,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2024-11-08 17:45:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:15,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-08 17:45:15,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:45:15,431 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 [2024-11-08 17:45:16,583 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 [2024-11-08 17:45:16,695 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:45:16,695 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 [2024-11-08 17:45:16,763 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 [2024-11-08 17:45:16,830 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 [2024-11-08 17:45:17,163 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 [2024-11-08 17:45:17,186 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 [2024-11-08 17:45:21,171 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:45:21,171 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 [2024-11-08 17:45:21,194 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 [2024-11-08 17:45:21,613 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:45:21,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-08 17:45:21,675 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 [2024-11-08 17:45:21,964 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:45:21,964 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 [2024-11-08 17:45:21,986 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 [2024-11-08 17:45:22,311 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:45:22,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-08 17:45:22,372 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 [2024-11-08 17:45:22,477 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 [2024-11-08 17:45:22,518 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 [2024-11-08 17:45:22,541 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 17:45:22,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:45:22,797 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8594 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8595 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8594 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 17:45:22,893 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8594 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8595 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8594 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-08 17:45:23,072 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8592 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8592) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8593) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8595 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8592 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8593))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8592) .cse2 v_ArrVal_8594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_8595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-08 17:45:23,177 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8595 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8592 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_8593))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_8592) .cse1 v_ArrVal_8594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_8594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8592 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_8592) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_8593) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse4) (bvadd (_ bv24 32) .cse4))))))) is different from false [2024-11-08 17:45:23,507 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8595 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8591 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8590 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8590))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8593))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8591) .cse0 v_ArrVal_8592) .cse1 v_ArrVal_8594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8591 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8590 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8590))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8591) .cse6 v_ArrVal_8592) (select (select (store .cse7 .cse6 v_ArrVal_8593) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8594))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse5) (bvadd (_ bv24 32) .cse5)))))) is different from false [2024-11-08 17:45:25,451 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_8594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8591 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8590 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8590))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8591) .cse2 v_ArrVal_8592) (select (select (store .cse3 .cse2 v_ArrVal_8593) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_8594))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8595 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8591 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8590 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8590))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_8593))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8591) .cse5 v_ArrVal_8592) .cse6 v_ArrVal_8594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_8595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))) is different from false [2024-11-08 17:45:33,084 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8595 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8591 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8590 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8686 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8686))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_8590))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_8593))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8687) .cse0 v_ArrVal_8591) .cse1 v_ArrVal_8592) .cse2 v_ArrVal_8594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_8595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_8594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8591 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8590 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8686 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8686))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_8590))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8687) .cse8 v_ArrVal_8591) .cse9 v_ArrVal_8592) (select (select (store .cse10 .cse9 v_ArrVal_8593) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8594))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse7 (_ bv20 32)) (bvadd .cse7 (_ bv24 32))))))) is different from false [2024-11-08 17:45:33,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [696466877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:45:33,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:45:33,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2024-11-08 17:45:33,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862431580] [2024-11-08 17:45:33,108 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:45:33,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:45:33,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:45:33,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:45:33,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=196, Unknown=22, NotChecked=468, Total=756 [2024-11-08 17:45:33,110 INFO L87 Difference]: Start difference. First operand 1191 states and 1277 transitions. Second operand has 12 states, 10 states have (on average 8.8) internal successors, (88), 12 states have internal predecessors, (88), 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) [2024-11-08 17:46:29,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:29,088 INFO L93 Difference]: Finished difference Result 1563 states and 1677 transitions. [2024-11-08 17:46:29,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:46:29,089 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.8) internal successors, (88), 12 states have internal predecessors, (88), 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 128 [2024-11-08 17:46:29,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:29,090 INFO L225 Difference]: With dead ends: 1563 [2024-11-08 17:46:29,091 INFO L226 Difference]: Without dead ends: 1563 [2024-11-08 17:46:29,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 251 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=122, Invalid=410, Unknown=22, NotChecked=636, Total=1190 [2024-11-08 17:46:29,091 INFO L432 NwaCegarLoop]: 679 mSDtfsCounter, 707 mSDsluCounter, 2678 mSDsCounter, 0 mSdLazyCounter, 4559 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 3357 SdHoareTripleChecker+Invalid, 4566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 4559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:29,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 3357 Invalid, 4566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 4559 Invalid, 0 Unknown, 0 Unchecked, 54.2s Time] [2024-11-08 17:46:29,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2024-11-08 17:46:29,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1190. [2024-11-08 17:46:29,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 762 states have (on average 1.6574803149606299) internal successors, (1263), 1180 states have internal predecessors, (1263), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 17:46:29,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1276 transitions. [2024-11-08 17:46:29,110 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1276 transitions. Word has length 128 [2024-11-08 17:46:29,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:29,111 INFO L471 AbstractCegarLoop]: Abstraction has 1190 states and 1276 transitions. [2024-11-08 17:46:29,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.8) internal successors, (88), 12 states have internal predecessors, (88), 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) [2024-11-08 17:46:29,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1276 transitions. [2024-11-08 17:46:29,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-08 17:46:29,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:29,112 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:29,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-08 17:46:29,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2024-11-08 17:46:29,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt [2024-11-08 17:46:29,513 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:46:29,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:29,513 INFO L85 PathProgramCache]: Analyzing trace with hash -915974083, now seen corresponding path program 1 times [2024-11-08 17:46:29,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:46:29,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625344443] [2024-11-08 17:46:29,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:29,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:46:29,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:46:29,515 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:46:29,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-08 17:46:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:30,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-08 17:46:30,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:46:31,798 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:46:31,798 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 [2024-11-08 17:46:31,910 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 [2024-11-08 17:46:34,314 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:46:34,314 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 [2024-11-08 17:46:34,760 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:46:34,760 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 [2024-11-08 17:46:35,239 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:46:35,240 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 [2024-11-08 17:46:35,769 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:46:35,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-08 17:46:36,342 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:46:36,343 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 [2024-11-08 17:46:36,801 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 [2024-11-08 17:46:37,306 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-08 17:46:37,307 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 [2024-11-08 17:46:37,344 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 17:46:37,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:46:38,250 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-08 17:46:38,250 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 [2024-11-08 17:46:38,742 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9158 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_9158) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-08 17:46:38,815 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9158 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9157 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_9157)) (.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_9158) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-08 17:46:38,865 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9158 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9157 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9157))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_9158) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-08 17:46:38,943 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9156 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9158 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9157 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_9156))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9157)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_9158) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-08 17:46:38,996 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9156 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9158 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9157 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9156))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9157)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_9158) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-08 17:46:39,078 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9156 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9155 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9158 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9157 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9155))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9156)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9157)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_9158) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-08 17:46:39,136 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9156 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9155 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9158 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9157 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9155))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9156)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9157)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_9158) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-08 17:46:40,634 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9156 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9155 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9205 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9158 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9157 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9205))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9155)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9156)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9157)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_9158) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-08 17:46:40,647 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:46:40,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625344443] [2024-11-08 17:46:40,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625344443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:46:40,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [417243961] [2024-11-08 17:46:40,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:40,647 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 17:46:40,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 17:46:40,649 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 17:46:40,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9cc0d46-cebc-4033-a1b1-852b3efe15e1/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process