./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:05:10,363 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:05:10,468 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 05:05:10,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:05:10,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:05:10,530 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:05:10,531 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:05:10,532 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:05:10,533 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:05:10,534 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:05:10,535 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:05:10,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:05:10,536 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:05:10,536 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:05:10,536 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:05:10,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:05:10,536 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:05:10,537 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:05:10,537 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:05:10,537 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:05:10,537 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:05:10,537 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:05:10,537 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:05:10,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:05:10,537 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:05:10,537 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:05:10,537 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:05:10,537 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:05:10,538 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:05:10,538 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:05:10,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:05:10,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:05:10,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:05:10,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:05:10,540 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:05:10,540 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:05:10,540 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:05:10,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:05:10,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:05:10,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:05:10,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:05:10,541 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:05:10,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:05:10,541 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:05:10,542 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:05:10,542 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:05:10,542 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:05:10,542 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 [2024-11-28 05:05:10,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:05:11,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:05:11,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:05:11,007 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:05:11,007 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:05:11,010 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2024-11-28 05:05:14,538 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/data/1016f29ea/66993d6734fa4167a5e1b52a82ab43fc/FLAGbad2edb7d [2024-11-28 05:05:15,067 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:05:15,067 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2024-11-28 05:05:15,095 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/data/1016f29ea/66993d6734fa4167a5e1b52a82ab43fc/FLAGbad2edb7d [2024-11-28 05:05:15,122 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/data/1016f29ea/66993d6734fa4167a5e1b52a82ab43fc [2024-11-28 05:05:15,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:05:15,127 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:05:15,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:05:15,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:05:15,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:05:15,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:05:15" (1/1) ... [2024-11-28 05:05:15,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17914b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:15, skipping insertion in model container [2024-11-28 05:05:15,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:05:15" (1/1) ... [2024-11-28 05:05:15,220 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:05:15,746 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,801 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,807 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,813 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,827 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,885 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,886 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,889 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,890 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,894 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,896 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,898 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,899 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,906 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,908 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,911 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,913 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,914 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,915 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,922 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:15,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:05:15,949 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) [2024-11-28 05:05:15,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@47c07316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:15, skipping insertion in model container [2024-11-28 05:05:15,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:05:15,950 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-28 05:05:15,953 INFO L158 Benchmark]: Toolchain (without parser) took 824.44ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 69.2MB in the end (delta: 19.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 05:05:15,953 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 83.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:05:15,954 INFO L158 Benchmark]: CACSL2BoogieTranslator took 819.44ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 69.2MB in the end (delta: 19.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 05:05:15,955 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 83.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 819.44ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 69.2MB in the end (delta: 19.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 747]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:05:18,989 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:05:19,152 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 05:05:19,165 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:05:19,165 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:05:19,224 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:05:19,225 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:05:19,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:05:19,226 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:05:19,227 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:05:19,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:05:19,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:05:19,229 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:05:19,229 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:05:19,229 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:05:19,230 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:05:19,230 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:05:19,230 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:05:19,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:05:19,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:05:19,230 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:05:19,230 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:05:19,231 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:05:19,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:05:19,231 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:05:19,231 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 05:05:19,231 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 05:05:19,232 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:05:19,232 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:05:19,232 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:05:19,232 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:05:19,233 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:05:19,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:05:19,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:05:19,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:05:19,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:05:19,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:05:19,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:05:19,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:05:19,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:05:19,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:05:19,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:05:19,234 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:05:19,234 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 05:05:19,234 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 05:05:19,234 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:05:19,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:05:19,236 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:05:19,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:05:19,236 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 [2024-11-28 05:05:19,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:05:19,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:05:19,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:05:19,644 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:05:19,645 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:05:19,647 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2024-11-28 05:05:22,960 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/data/dc6263702/cdbadc93ed604e908e6bb1e38e884bb4/FLAG6dad9ab3a [2024-11-28 05:05:23,539 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:05:23,540 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2024-11-28 05:05:23,564 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/data/dc6263702/cdbadc93ed604e908e6bb1e38e884bb4/FLAG6dad9ab3a [2024-11-28 05:05:24,062 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/data/dc6263702/cdbadc93ed604e908e6bb1e38e884bb4 [2024-11-28 05:05:24,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:05:24,067 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:05:24,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:05:24,068 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:05:24,074 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:05:24,074 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:05:24" (1/1) ... [2024-11-28 05:05:24,075 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3288bddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:24, skipping insertion in model container [2024-11-28 05:05:24,076 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:05:24" (1/1) ... [2024-11-28 05:05:24,127 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:05:24,724 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,769 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,775 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,782 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,795 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,851 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,851 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,859 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,859 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,867 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,873 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,875 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,876 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,884 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,885 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,889 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,890 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,892 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,893 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,900 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:24,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:05:24,926 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-28 05:05:24,948 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:05:24,998 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,050 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,053 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,065 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,075 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,135 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,135 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,139 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,139 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,142 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,143 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,144 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,145 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,150 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,151 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,154 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,155 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,156 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,157 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,161 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:05:25,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:05:25,180 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:05:25,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:05:25,419 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:05:25,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:25 WrapperNode [2024-11-28 05:05:25,420 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:05:25,422 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:05:25,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:05:25,423 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:05:25,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:25" (1/1) ... [2024-11-28 05:05:25,484 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:25" (1/1) ... [2024-11-28 05:05:25,599 INFO L138 Inliner]: procedures = 180, calls = 330, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1196 [2024-11-28 05:05:25,600 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:05:25,600 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:05:25,600 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:05:25,601 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:05:25,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:25" (1/1) ... [2024-11-28 05:05:25,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:25" (1/1) ... [2024-11-28 05:05:25,642 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:25" (1/1) ... [2024-11-28 05:05:25,807 INFO L175 MemorySlicer]: Split 303 memory accesses to 3 slices as follows [2, 34, 267]. 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]. [2024-11-28 05:05:25,807 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:25" (1/1) ... [2024-11-28 05:05:25,807 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:25" (1/1) ... [2024-11-28 05:05:25,901 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:25" (1/1) ... [2024-11-28 05:05:25,907 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:25" (1/1) ... [2024-11-28 05:05:25,931 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:25" (1/1) ... [2024-11-28 05:05:25,940 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:25" (1/1) ... [2024-11-28 05:05:25,948 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:25" (1/1) ... [2024-11-28 05:05:25,968 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:05:25,971 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:05:25,972 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:05:25,972 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:05:25,973 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:25" (1/1) ... [2024-11-28 05:05:25,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:05:26,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:26,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:05:26,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:05:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-11-28 05:05:26,065 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-11-28 05:05:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-28 05:05:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-28 05:05:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-28 05:05:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-28 05:05:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-28 05:05:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-28 05:05:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 05:05:26,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 05:05:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 05:05:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 05:05:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-28 05:05:26,069 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 05:05:26,069 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 05:05:26,069 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-28 05:05:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:05:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:05:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 05:05:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 05:05:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 05:05:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 05:05:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 05:05:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 05:05:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 05:05:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:05:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 05:05:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-28 05:05:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-28 05:05:26,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 05:05:26,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 05:05:26,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-28 05:05:26,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:05:26,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:05:26,458 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:05:26,461 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:05:26,484 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 05:05:26,528 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 05:05:26,568 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 05:05:33,470 INFO L? ?]: Removed 1312 outVars from TransFormulas that were not future-live. [2024-11-28 05:05:33,470 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:05:33,523 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:05:33,523 INFO L312 CfgBuilder]: Removed 41 assume(true) statements. [2024-11-28 05:05:33,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:05:33 BoogieIcfgContainer [2024-11-28 05:05:33,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:05:33,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:05:33,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:05:33,539 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:05:33,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:05:24" (1/3) ... [2024-11-28 05:05:33,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6d7816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:05:33, skipping insertion in model container [2024-11-28 05:05:33,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:05:25" (2/3) ... [2024-11-28 05:05:33,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6d7816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:05:33, skipping insertion in model container [2024-11-28 05:05:33,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:05:33" (3/3) ... [2024-11-28 05:05:33,542 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-2.i [2024-11-28 05:05:33,563 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:05:33,565 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test3-2.i that has 6 procedures, 1285 locations, 1 initial locations, 43 loop locations, and 632 error locations. [2024-11-28 05:05:33,669 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:05:33,690 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;@5471cf98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:05:33,691 INFO L334 AbstractCegarLoop]: Starting to check reachability of 632 error locations. [2024-11-28 05:05:33,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 1275 states, 632 states have (on average 2.231012658227848) internal successors, (1410), 1268 states have internal predecessors, (1410), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 05:05:33,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 05:05:33,711 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:05:33,712 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 05:05:33,712 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:05:33,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:33,720 INFO L85 PathProgramCache]: Analyzing trace with hash 65605, now seen corresponding path program 1 times [2024-11-28 05:05:33,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:05:33,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845049187] [2024-11-28 05:05:33,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:05:33,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:33,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:33,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:33,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:05:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:33,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:05:33,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:34,047 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 [2024-11-28 05:05:34,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:05:34,081 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:05:34,082 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:05:34,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845049187] [2024-11-28 05:05:34,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845049187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:34,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:34,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:05:34,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873952228] [2024-11-28 05:05:34,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:34,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:05:34,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:05:34,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:05:34,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:05:34,134 INFO L87 Difference]: Start difference. First operand has 1275 states, 632 states have (on average 2.231012658227848) internal successors, (1410), 1268 states have internal predecessors, (1410), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:37,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:05:37,381 INFO L93 Difference]: Finished difference Result 1449 states and 1535 transitions. [2024-11-28 05:05:37,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:05:37,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-28 05:05:37,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:05:37,422 INFO L225 Difference]: With dead ends: 1449 [2024-11-28 05:05:37,422 INFO L226 Difference]: Without dead ends: 1447 [2024-11-28 05:05:37,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:05:37,429 INFO L435 NwaCegarLoop]: 776 mSDtfsCounter, 1173 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:05:37,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 942 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 05:05:37,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2024-11-28 05:05:37,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1260. [2024-11-28 05:05:37,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 634 states have (on average 2.080441640378549) internal successors, (1319), 1253 states have internal predecessors, (1319), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:05:37,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1337 transitions. [2024-11-28 05:05:37,622 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1337 transitions. Word has length 3 [2024-11-28 05:05:37,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:05:37,622 INFO L471 AbstractCegarLoop]: Abstraction has 1260 states and 1337 transitions. [2024-11-28 05:05:37,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:37,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1337 transitions. [2024-11-28 05:05:37,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 05:05:37,623 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:05:37,623 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 05:05:37,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:05:37,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:37,828 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:05:37,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:37,829 INFO L85 PathProgramCache]: Analyzing trace with hash 65606, now seen corresponding path program 1 times [2024-11-28 05:05:37,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:05:37,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109956834] [2024-11-28 05:05:37,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:05:37,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:37,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:37,832 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:37,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:05:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:38,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:05:38,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:38,024 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 [2024-11-28 05:05:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:05:38,045 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:05:38,045 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:05:38,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109956834] [2024-11-28 05:05:38,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109956834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:38,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:38,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:05:38,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087599829] [2024-11-28 05:05:38,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:38,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:05:38,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:05:38,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:05:38,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:05:38,048 INFO L87 Difference]: Start difference. First operand 1260 states and 1337 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:42,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:05:42,814 INFO L93 Difference]: Finished difference Result 1879 states and 2009 transitions. [2024-11-28 05:05:42,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:05:42,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-28 05:05:42,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:05:42,823 INFO L225 Difference]: With dead ends: 1879 [2024-11-28 05:05:42,824 INFO L226 Difference]: Without dead ends: 1879 [2024-11-28 05:05:42,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:05:42,825 INFO L435 NwaCegarLoop]: 1040 mSDtfsCounter, 660 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:05:42,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1749 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-28 05:05:42,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2024-11-28 05:05:42,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1468. [2024-11-28 05:05:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 843 states have (on average 2.0652431791221826) internal successors, (1741), 1461 states have internal predecessors, (1741), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:05:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 1759 transitions. [2024-11-28 05:05:42,876 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 1759 transitions. Word has length 3 [2024-11-28 05:05:42,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:05:42,877 INFO L471 AbstractCegarLoop]: Abstraction has 1468 states and 1759 transitions. [2024-11-28 05:05:42,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:42,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 1759 transitions. [2024-11-28 05:05:42,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 05:05:42,878 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:05:42,878 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:05:42,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:05:43,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:43,079 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:05:43,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:43,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1329215633, now seen corresponding path program 1 times [2024-11-28 05:05:43,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:05:43,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274881927] [2024-11-28 05:05:43,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:05:43,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:43,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:43,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:43,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:05:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:43,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 05:05:43,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:43,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:05:43,403 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-28 05:05:43,404 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 [2024-11-28 05:05:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:05:43,555 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:05:43,555 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:05:43,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274881927] [2024-11-28 05:05:43,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274881927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:43,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:43,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:05:43,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115188195] [2024-11-28 05:05:43,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:43,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:05:43,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:05:43,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:05:43,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:05:43,557 INFO L87 Difference]: Start difference. First operand 1468 states and 1759 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) [2024-11-28 05:05:52,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:05:52,151 INFO L93 Difference]: Finished difference Result 2784 states and 2983 transitions. [2024-11-28 05:05:52,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:05:52,154 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 [2024-11-28 05:05:52,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:05:52,166 INFO L225 Difference]: With dead ends: 2784 [2024-11-28 05:05:52,167 INFO L226 Difference]: Without dead ends: 2784 [2024-11-28 05:05:52,167 INFO L434 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 [2024-11-28 05:05:52,168 INFO L435 NwaCegarLoop]: 1288 mSDtfsCounter, 1614 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 1984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:05:52,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1624 Valid, 2696 Invalid, 1984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-11-28 05:05:52,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2024-11-28 05:05:52,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 1617. [2024-11-28 05:05:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 992 states have (on average 2.0443548387096775) internal successors, (2028), 1610 states have internal predecessors, (2028), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:05:52,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2046 transitions. [2024-11-28 05:05:52,230 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2046 transitions. Word has length 8 [2024-11-28 05:05:52,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:05:52,231 INFO L471 AbstractCegarLoop]: Abstraction has 1617 states and 2046 transitions. [2024-11-28 05:05:52,231 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) [2024-11-28 05:05:52,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2046 transitions. [2024-11-28 05:05:52,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 05:05:52,231 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:05:52,231 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:05:52,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:05:52,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:52,432 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:05:52,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:52,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1743988334, now seen corresponding path program 1 times [2024-11-28 05:05:52,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:05:52,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568963301] [2024-11-28 05:05:52,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:05:52,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:52,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:52,438 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:52,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:05:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:52,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:05:52,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:52,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:05:52,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:05:52,663 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:05:52,663 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:05:52,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568963301] [2024-11-28 05:05:52,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568963301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:52,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:52,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:05:52,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809685979] [2024-11-28 05:05:52,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:52,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:05:52,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:05:52,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:05:52,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:05:52,666 INFO L87 Difference]: Start difference. First operand 1617 states and 2046 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) [2024-11-28 05:05:55,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:05:55,986 INFO L93 Difference]: Finished difference Result 2152 states and 2807 transitions. [2024-11-28 05:05:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:05:55,986 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 [2024-11-28 05:05:55,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:05:55,995 INFO L225 Difference]: With dead ends: 2152 [2024-11-28 05:05:55,995 INFO L226 Difference]: Without dead ends: 2152 [2024-11-28 05:05:55,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:05:55,996 INFO L435 NwaCegarLoop]: 1193 mSDtfsCounter, 949 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:05:55,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 1548 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 05:05:56,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2024-11-28 05:05:56,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1568. [2024-11-28 05:05:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 992 states have (on average 1.9838709677419355) internal successors, (1968), 1561 states have internal predecessors, (1968), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:05:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 1986 transitions. [2024-11-28 05:05:56,045 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 1986 transitions. Word has length 9 [2024-11-28 05:05:56,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:05:56,045 INFO L471 AbstractCegarLoop]: Abstraction has 1568 states and 1986 transitions. [2024-11-28 05:05:56,045 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) [2024-11-28 05:05:56,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 1986 transitions. [2024-11-28 05:05:56,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 05:05:56,046 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:05:56,046 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:05:56,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:05:56,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:56,250 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:05:56,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:56,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1743988333, now seen corresponding path program 1 times [2024-11-28 05:05:56,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:05:56,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863826021] [2024-11-28 05:05:56,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:05:56,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:56,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:56,254 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:56,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:05:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:56,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:05:56,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:56,479 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 [2024-11-28 05:05:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:05:56,527 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:05:56,527 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:05:56,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863826021] [2024-11-28 05:05:56,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863826021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:56,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:56,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:05:56,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539625207] [2024-11-28 05:05:56,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:56,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:05:56,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:05:56,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:05:56,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:05:56,529 INFO L87 Difference]: Start difference. First operand 1568 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) [2024-11-28 05:06:01,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:01,279 INFO L93 Difference]: Finished difference Result 2258 states and 2912 transitions. [2024-11-28 05:06:01,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:06:01,280 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 [2024-11-28 05:06:01,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:01,290 INFO L225 Difference]: With dead ends: 2258 [2024-11-28 05:06:01,290 INFO L226 Difference]: Without dead ends: 2258 [2024-11-28 05:06:01,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:06:01,292 INFO L435 NwaCegarLoop]: 1385 mSDtfsCounter, 703 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:01,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1935 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-28 05:06:01,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2024-11-28 05:06:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1595. [2024-11-28 05:06:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1029 states have (on average 1.9640427599611272) internal successors, (2021), 1588 states have internal predecessors, (2021), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:06:01,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2039 transitions. [2024-11-28 05:06:01,344 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2039 transitions. Word has length 9 [2024-11-28 05:06:01,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:01,345 INFO L471 AbstractCegarLoop]: Abstraction has 1595 states and 2039 transitions. [2024-11-28 05:06:01,345 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) [2024-11-28 05:06:01,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2039 transitions. [2024-11-28 05:06:01,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 05:06:01,346 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:01,346 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:01,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 05:06:01,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:01,547 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:06:01,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:01,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2051574547, now seen corresponding path program 1 times [2024-11-28 05:06:01,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:06:01,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229485034] [2024-11-28 05:06:01,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:01,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:01,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:01,552 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:01,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:06:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:01,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:06:01,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:06:01,863 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:06:01,864 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:06:01,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229485034] [2024-11-28 05:06:01,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229485034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:01,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:01,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:06:01,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934310584] [2024-11-28 05:06:01,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:01,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:06:01,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:06:01,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:06:01,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:06:01,866 INFO L87 Difference]: Start difference. First operand 1595 states and 2039 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:03,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:03,370 INFO L93 Difference]: Finished difference Result 2210 states and 2788 transitions. [2024-11-28 05:06:03,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:06:03,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 05:06:03,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:03,379 INFO L225 Difference]: With dead ends: 2210 [2024-11-28 05:06:03,379 INFO L226 Difference]: Without dead ends: 2210 [2024-11-28 05:06:03,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:06:03,380 INFO L435 NwaCegarLoop]: 1406 mSDtfsCounter, 638 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 3849 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:03,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 3849 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 05:06:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2210 states. [2024-11-28 05:06:03,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2210 to 1849. [2024-11-28 05:06:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1283 states have (on average 1.9734996102883866) internal successors, (2532), 1842 states have internal predecessors, (2532), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:06:03,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2550 transitions. [2024-11-28 05:06:03,468 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2550 transitions. Word has length 11 [2024-11-28 05:06:03,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:03,468 INFO L471 AbstractCegarLoop]: Abstraction has 1849 states and 2550 transitions. [2024-11-28 05:06:03,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:03,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2550 transitions. [2024-11-28 05:06:03,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 05:06:03,469 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:03,469 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:03,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:06:03,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:03,674 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:06:03,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:03,675 INFO L85 PathProgramCache]: Analyzing trace with hash -549267329, now seen corresponding path program 1 times [2024-11-28 05:06:03,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:06:03,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540990303] [2024-11-28 05:06:03,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:03,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:03,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:03,679 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:03,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:06:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:03,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:06:03,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:06:03,949 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:06:03,949 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:06:03,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540990303] [2024-11-28 05:06:03,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540990303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:03,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:03,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:06:03,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191068613] [2024-11-28 05:06:03,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:03,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:06:03,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:06:03,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:06:03,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:06:03,952 INFO L87 Difference]: Start difference. First operand 1849 states and 2550 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) 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) [2024-11-28 05:06:07,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:07,913 INFO L93 Difference]: Finished difference Result 2034 states and 2678 transitions. [2024-11-28 05:06:07,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:06:07,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) 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 [2024-11-28 05:06:07,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:07,923 INFO L225 Difference]: With dead ends: 2034 [2024-11-28 05:06:07,923 INFO L226 Difference]: Without dead ends: 2034 [2024-11-28 05:06:07,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:06:07,924 INFO L435 NwaCegarLoop]: 732 mSDtfsCounter, 1169 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:07,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 1508 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 05:06:07,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2024-11-28 05:06:07,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 1826. [2024-11-28 05:06:07,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1283 states have (on average 1.901792673421668) internal successors, (2440), 1819 states have internal predecessors, (2440), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:06:07,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2458 transitions. [2024-11-28 05:06:07,970 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 2458 transitions. Word has length 13 [2024-11-28 05:06:07,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:07,970 INFO L471 AbstractCegarLoop]: Abstraction has 1826 states and 2458 transitions. [2024-11-28 05:06:07,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) 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) [2024-11-28 05:06:07,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 2458 transitions. [2024-11-28 05:06:07,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 05:06:07,971 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:07,971 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:07,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:06:08,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:08,175 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:06:08,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:08,176 INFO L85 PathProgramCache]: Analyzing trace with hash -549267328, now seen corresponding path program 1 times [2024-11-28 05:06:08,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:06:08,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818118299] [2024-11-28 05:06:08,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:08,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:08,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:08,178 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:08,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:06:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:08,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:06:08,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:08,405 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 [2024-11-28 05:06:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:06:08,563 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:06:08,563 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:06:08,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818118299] [2024-11-28 05:06:08,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818118299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:08,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:08,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:06:08,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483731784] [2024-11-28 05:06:08,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:08,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:06:08,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:06:08,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:06:08,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:06:08,565 INFO L87 Difference]: Start difference. First operand 1826 states and 2458 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) 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) [2024-11-28 05:06:14,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:14,386 INFO L93 Difference]: Finished difference Result 2172 states and 2635 transitions. [2024-11-28 05:06:14,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:06:14,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) 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 [2024-11-28 05:06:14,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:14,395 INFO L225 Difference]: With dead ends: 2172 [2024-11-28 05:06:14,395 INFO L226 Difference]: Without dead ends: 2172 [2024-11-28 05:06:14,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:06:14,397 INFO L435 NwaCegarLoop]: 987 mSDtfsCounter, 637 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:14,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 2255 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-28 05:06:14,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2024-11-28 05:06:14,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1775. [2024-11-28 05:06:14,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1232 states have (on average 1.9017857142857142) internal successors, (2343), 1768 states have internal predecessors, (2343), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:06:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2361 transitions. [2024-11-28 05:06:14,439 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2361 transitions. Word has length 13 [2024-11-28 05:06:14,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:14,439 INFO L471 AbstractCegarLoop]: Abstraction has 1775 states and 2361 transitions. [2024-11-28 05:06:14,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) 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) [2024-11-28 05:06:14,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2361 transitions. [2024-11-28 05:06:14,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 05:06:14,440 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:14,440 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:14,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 05:06:14,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:14,644 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr355REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:06:14,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:14,645 INFO L85 PathProgramCache]: Analyzing trace with hash 435220567, now seen corresponding path program 1 times [2024-11-28 05:06:14,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:06:14,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873749385] [2024-11-28 05:06:14,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:14,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:14,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:14,648 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:14,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:06:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:14,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:06:14,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:06:14,901 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:06:14,902 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:06:14,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873749385] [2024-11-28 05:06:14,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873749385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:14,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:14,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:06:14,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786948059] [2024-11-28 05:06:14,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:14,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:06:14,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:06:14,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:06:14,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:06:14,905 INFO L87 Difference]: Start difference. First operand 1775 states and 2361 transitions. Second operand has 4 states, 4 states have (on average 3.75) 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) [2024-11-28 05:06:15,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:15,051 INFO L93 Difference]: Finished difference Result 1703 states and 2238 transitions. [2024-11-28 05:06:15,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:06:15,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) 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 [2024-11-28 05:06:15,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:15,058 INFO L225 Difference]: With dead ends: 1703 [2024-11-28 05:06:15,058 INFO L226 Difference]: Without dead ends: 1703 [2024-11-28 05:06:15,059 INFO L434 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 [2024-11-28 05:06:15,061 INFO L435 NwaCegarLoop]: 1164 mSDtfsCounter, 45 mSDsluCounter, 2305 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3469 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:15,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3469 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:06:15,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2024-11-28 05:06:15,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1703. [2024-11-28 05:06:15,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1179 states have (on average 1.8829516539440203) internal successors, (2220), 1696 states have internal predecessors, (2220), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:06:15,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2238 transitions. [2024-11-28 05:06:15,102 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2238 transitions. Word has length 15 [2024-11-28 05:06:15,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:15,102 INFO L471 AbstractCegarLoop]: Abstraction has 1703 states and 2238 transitions. [2024-11-28 05:06:15,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) 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) [2024-11-28 05:06:15,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2238 transitions. [2024-11-28 05:06:15,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 05:06:15,103 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:15,104 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:15,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:06:15,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:15,312 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr630ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:06:15,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:15,316 INFO L85 PathProgramCache]: Analyzing trace with hash 572709213, now seen corresponding path program 1 times [2024-11-28 05:06:15,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:06:15,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614993724] [2024-11-28 05:06:15,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:15,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:15,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:15,320 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:15,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 05:06:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:15,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:06:15,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:15,562 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:06:15,563 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:06:15,564 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:06:15,568 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 [2024-11-28 05:06:15,650 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:06:15,651 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 [2024-11-28 05:06:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:06:15,672 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:06:15,673 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:06:15,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614993724] [2024-11-28 05:06:15,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614993724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:15,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:15,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:06:15,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101895726] [2024-11-28 05:06:15,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:15,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:06:15,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:06:15,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:06:15,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:06:15,675 INFO L87 Difference]: Start difference. First operand 1703 states and 2238 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) [2024-11-28 05:06:16,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:16,079 INFO L93 Difference]: Finished difference Result 2444 states and 2835 transitions. [2024-11-28 05:06:16,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:06:16,080 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 [2024-11-28 05:06:16,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:16,086 INFO L225 Difference]: With dead ends: 2444 [2024-11-28 05:06:16,086 INFO L226 Difference]: Without dead ends: 2444 [2024-11-28 05:06:16,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:06:16,087 INFO L435 NwaCegarLoop]: 1380 mSDtfsCounter, 1094 mSDsluCounter, 2522 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:16,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 3902 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:06:16,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2024-11-28 05:06:16,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 1392. [2024-11-28 05:06:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 868 states have (on average 1.8974654377880185) internal successors, (1647), 1385 states have internal predecessors, (1647), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:06:16,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1665 transitions. [2024-11-28 05:06:16,119 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1665 transitions. Word has length 16 [2024-11-28 05:06:16,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:16,120 INFO L471 AbstractCegarLoop]: Abstraction has 1392 states and 1665 transitions. [2024-11-28 05:06:16,120 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) [2024-11-28 05:06:16,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1665 transitions. [2024-11-28 05:06:16,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 05:06:16,121 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:16,121 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:16,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 05:06:16,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:16,322 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:06:16,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:16,322 INFO L85 PathProgramCache]: Analyzing trace with hash 495195041, now seen corresponding path program 1 times [2024-11-28 05:06:16,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:06:16,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925906982] [2024-11-28 05:06:16,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:16,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:16,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:16,325 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:16,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 05:06:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:16,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:06:16,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:16,593 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 [2024-11-28 05:06:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:06:16,668 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:06:16,668 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:06:16,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925906982] [2024-11-28 05:06:16,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925906982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:16,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:16,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:06:16,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467707744] [2024-11-28 05:06:16,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:16,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:06:16,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:06:16,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:06:16,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:06:16,670 INFO L87 Difference]: Start difference. First operand 1392 states and 1665 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:20,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:20,475 INFO L93 Difference]: Finished difference Result 1767 states and 2134 transitions. [2024-11-28 05:06:20,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:06:20,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-11-28 05:06:20,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:20,480 INFO L225 Difference]: With dead ends: 1767 [2024-11-28 05:06:20,480 INFO L226 Difference]: Without dead ends: 1767 [2024-11-28 05:06:20,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:06:20,481 INFO L435 NwaCegarLoop]: 727 mSDtfsCounter, 914 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:20,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1576 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 05:06:20,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2024-11-28 05:06:20,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1369. [2024-11-28 05:06:20,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 868 states have (on average 1.8444700460829493) internal successors, (1601), 1362 states have internal predecessors, (1601), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:06:20,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1619 transitions. [2024-11-28 05:06:20,508 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1619 transitions. Word has length 19 [2024-11-28 05:06:20,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:20,509 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 1619 transitions. [2024-11-28 05:06:20,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:20,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1619 transitions. [2024-11-28 05:06:20,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 05:06:20,510 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:20,510 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:20,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 05:06:20,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:20,714 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:06:20,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:20,715 INFO L85 PathProgramCache]: Analyzing trace with hash 495195042, now seen corresponding path program 1 times [2024-11-28 05:06:20,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:06:20,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785223667] [2024-11-28 05:06:20,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:20,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:20,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:20,718 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:20,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 05:06:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:20,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:06:20,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:20,964 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 [2024-11-28 05:06:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:06:21,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:06:21,122 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:06:21,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785223667] [2024-11-28 05:06:21,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785223667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:21,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:21,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:06:21,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383014747] [2024-11-28 05:06:21,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:21,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:06:21,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:06:21,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:06:21,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:06:21,124 INFO L87 Difference]: Start difference. First operand 1369 states and 1619 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:26,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:26,776 INFO L93 Difference]: Finished difference Result 2017 states and 2388 transitions. [2024-11-28 05:06:26,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:06:26,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-11-28 05:06:26,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:26,784 INFO L225 Difference]: With dead ends: 2017 [2024-11-28 05:06:26,785 INFO L226 Difference]: Without dead ends: 2017 [2024-11-28 05:06:26,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:06:26,785 INFO L435 NwaCegarLoop]: 1324 mSDtfsCounter, 742 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:26,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 2676 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-28 05:06:26,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2024-11-28 05:06:26,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1485. [2024-11-28 05:06:26,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 984 states have (on average 1.7693089430894309) internal successors, (1741), 1478 states have internal predecessors, (1741), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:06:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 1759 transitions. [2024-11-28 05:06:26,830 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 1759 transitions. Word has length 19 [2024-11-28 05:06:26,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:26,831 INFO L471 AbstractCegarLoop]: Abstraction has 1485 states and 1759 transitions. [2024-11-28 05:06:26,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:26,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 1759 transitions. [2024-11-28 05:06:26,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 05:06:26,832 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:26,832 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:26,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 05:06:27,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:27,033 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:06:27,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:27,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1991006148, now seen corresponding path program 1 times [2024-11-28 05:06:27,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:06:27,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497732283] [2024-11-28 05:06:27,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:27,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:27,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:27,039 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:27,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 05:06:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:27,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:06:27,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:27,392 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 [2024-11-28 05:06:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:06:27,762 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:06:28,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:06:28,677 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:06:28,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497732283] [2024-11-28 05:06:28,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497732283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:06:28,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:06:28,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-28 05:06:28,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873755402] [2024-11-28 05:06:28,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:06:28,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:06:28,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:06:28,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:06:28,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:06:28,680 INFO L87 Difference]: Start difference. First operand 1485 states and 1759 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:42,613 INFO L93 Difference]: Finished difference Result 2379 states and 2884 transitions. [2024-11-28 05:06:42,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:06:42,614 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 38 [2024-11-28 05:06:42,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:42,623 INFO L225 Difference]: With dead ends: 2379 [2024-11-28 05:06:42,624 INFO L226 Difference]: Without dead ends: 2379 [2024-11-28 05:06:42,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:06:42,625 INFO L435 NwaCegarLoop]: 1352 mSDtfsCounter, 2361 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2362 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:42,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2362 Valid, 3648 Invalid, 2413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2024-11-28 05:06:42,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2024-11-28 05:06:42,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 1651. [2024-11-28 05:06:42,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1150 states have (on average 1.7173913043478262) internal successors, (1975), 1644 states have internal predecessors, (1975), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:06:42,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 1993 transitions. [2024-11-28 05:06:42,656 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 1993 transitions. Word has length 38 [2024-11-28 05:06:42,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:42,657 INFO L471 AbstractCegarLoop]: Abstraction has 1651 states and 1993 transitions. [2024-11-28 05:06:42,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:42,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 1993 transitions. [2024-11-28 05:06:42,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 05:06:42,658 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:42,659 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:42,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 05:06:42,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:42,863 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:06:42,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:42,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1728836185, now seen corresponding path program 1 times [2024-11-28 05:06:42,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:06:42,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263983978] [2024-11-28 05:06:42,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:42,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:42,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:42,867 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:42,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 05:06:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:43,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:06:43,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:06:43,270 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:06:43,270 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:06:43,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263983978] [2024-11-28 05:06:43,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263983978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:43,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:43,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:06:43,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436948799] [2024-11-28 05:06:43,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:43,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:06:43,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:06:43,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:06:43,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:06:43,271 INFO L87 Difference]: Start difference. First operand 1651 states and 1993 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) [2024-11-28 05:06:43,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:43,410 INFO L93 Difference]: Finished difference Result 1336 states and 1553 transitions. [2024-11-28 05:06:43,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:06:43,411 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 [2024-11-28 05:06:43,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:43,415 INFO L225 Difference]: With dead ends: 1336 [2024-11-28 05:06:43,416 INFO L226 Difference]: Without dead ends: 1336 [2024-11-28 05:06:43,416 INFO L434 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 [2024-11-28 05:06:43,416 INFO L435 NwaCegarLoop]: 1101 mSDtfsCounter, 56 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:43,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3230 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:06:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2024-11-28 05:06:43,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1334. [2024-11-28 05:06:43,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 856 states have (on average 1.7908878504672898) internal successors, (1533), 1327 states have internal predecessors, (1533), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:06:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1551 transitions. [2024-11-28 05:06:43,439 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1551 transitions. Word has length 54 [2024-11-28 05:06:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:43,439 INFO L471 AbstractCegarLoop]: Abstraction has 1334 states and 1551 transitions. [2024-11-28 05:06:43,440 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) [2024-11-28 05:06:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1551 transitions. [2024-11-28 05:06:43,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 05:06:43,441 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:43,441 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:43,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 05:06:43,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:43,642 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:06:43,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:43,642 INFO L85 PathProgramCache]: Analyzing trace with hash 199933403, now seen corresponding path program 1 times [2024-11-28 05:06:43,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:06:43,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610016203] [2024-11-28 05:06:43,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:43,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:43,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:43,645 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:43,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 05:06:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:43,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:06:44,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:44,022 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 [2024-11-28 05:06:44,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:06:44,899 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 [2024-11-28 05:06:44,925 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:06:44,926 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 [2024-11-28 05:06:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:06:44,934 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:06:44,934 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:06:44,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610016203] [2024-11-28 05:06:44,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610016203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:44,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:44,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:06:44,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059982960] [2024-11-28 05:06:44,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:44,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:06:44,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:06:44,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:06:44,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:06:44,936 INFO L87 Difference]: Start difference. First operand 1334 states and 1551 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) [2024-11-28 05:06:50,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:50,155 INFO L93 Difference]: Finished difference Result 1686 states and 2020 transitions. [2024-11-28 05:06:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:06:50,156 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 [2024-11-28 05:06:50,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:50,161 INFO L225 Difference]: With dead ends: 1686 [2024-11-28 05:06:50,161 INFO L226 Difference]: Without dead ends: 1686 [2024-11-28 05:06:50,161 INFO L434 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 [2024-11-28 05:06:50,162 INFO L435 NwaCegarLoop]: 553 mSDtfsCounter, 1841 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1844 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:50,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1844 Valid, 1201 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-28 05:06:50,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2024-11-28 05:06:50,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1259. [2024-11-28 05:06:50,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 819 states have (on average 1.735042735042735) internal successors, (1421), 1252 states have internal predecessors, (1421), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:06:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1439 transitions. [2024-11-28 05:06:50,181 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1439 transitions. Word has length 62 [2024-11-28 05:06:50,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:50,182 INFO L471 AbstractCegarLoop]: Abstraction has 1259 states and 1439 transitions. [2024-11-28 05:06:50,182 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) [2024-11-28 05:06:50,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1439 transitions. [2024-11-28 05:06:50,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 05:06:50,183 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:50,183 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:50,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 05:06:50,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:50,384 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:06:50,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:50,384 INFO L85 PathProgramCache]: Analyzing trace with hash -543313183, now seen corresponding path program 1 times [2024-11-28 05:06:50,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:06:50,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847756401] [2024-11-28 05:06:50,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:50,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:50,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:50,387 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:50,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 05:06:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:50,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:06:50,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:50,772 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 [2024-11-28 05:06:50,797 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 [2024-11-28 05:06:50,841 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 [2024-11-28 05:06:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:06:50,860 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:06:50,860 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:06:50,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847756401] [2024-11-28 05:06:50,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847756401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:50,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:50,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:06:50,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243163693] [2024-11-28 05:06:50,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:50,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:06:50,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:06:50,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:06:50,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:06:50,862 INFO L87 Difference]: Start difference. First operand 1259 states and 1439 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) [2024-11-28 05:06:54,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:54,758 INFO L93 Difference]: Finished difference Result 1258 states and 1438 transitions. [2024-11-28 05:06:54,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:06:54,758 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 [2024-11-28 05:06:54,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:54,762 INFO L225 Difference]: With dead ends: 1258 [2024-11-28 05:06:54,762 INFO L226 Difference]: Without dead ends: 1258 [2024-11-28 05:06:54,763 INFO L434 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 [2024-11-28 05:06:54,764 INFO L435 NwaCegarLoop]: 1074 mSDtfsCounter, 2 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:54,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2815 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-28 05:06:54,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2024-11-28 05:06:54,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1258. [2024-11-28 05:06:54,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 819 states have (on average 1.7338217338217339) internal successors, (1420), 1251 states have internal predecessors, (1420), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:06:54,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1438 transitions. [2024-11-28 05:06:54,782 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1438 transitions. Word has length 67 [2024-11-28 05:06:54,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:54,783 INFO L471 AbstractCegarLoop]: Abstraction has 1258 states and 1438 transitions. [2024-11-28 05:06:54,783 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) [2024-11-28 05:06:54,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1438 transitions. [2024-11-28 05:06:54,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 05:06:54,784 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:54,784 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:54,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 05:06:54,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:54,984 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:06:54,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:54,985 INFO L85 PathProgramCache]: Analyzing trace with hash -543313182, now seen corresponding path program 1 times [2024-11-28 05:06:54,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:06:54,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104498940] [2024-11-28 05:06:54,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:54,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:54,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:54,988 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:54,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 05:06:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:55,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 05:06:55,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:55,382 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 5 [2024-11-28 05:06:55,407 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 [2024-11-28 05:06:55,414 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 [2024-11-28 05:06:55,493 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 [2024-11-28 05:06:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:06:55,525 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:06:55,525 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:06:55,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104498940] [2024-11-28 05:06:55,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104498940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:55,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:55,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:06:55,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764566613] [2024-11-28 05:06:55,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:55,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:06:55,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:06:55,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:06:55,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:06:55,527 INFO L87 Difference]: Start difference. First operand 1258 states and 1438 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) [2024-11-28 05:07:00,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:00,510 INFO L93 Difference]: Finished difference Result 1257 states and 1437 transitions. [2024-11-28 05:07:00,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:07:00,511 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 [2024-11-28 05:07:00,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:00,516 INFO L225 Difference]: With dead ends: 1257 [2024-11-28 05:07:00,516 INFO L226 Difference]: Without dead ends: 1257 [2024-11-28 05:07:00,516 INFO L434 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 [2024-11-28 05:07:00,517 INFO L435 NwaCegarLoop]: 1074 mSDtfsCounter, 1 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:07:00,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2820 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-28 05:07:00,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2024-11-28 05:07:00,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1257. [2024-11-28 05:07:00,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 818 states have (on average 1.734718826405868) internal successors, (1419), 1250 states have internal predecessors, (1419), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:07:00,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1437 transitions. [2024-11-28 05:07:00,537 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1437 transitions. Word has length 67 [2024-11-28 05:07:00,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:00,537 INFO L471 AbstractCegarLoop]: Abstraction has 1257 states and 1437 transitions. [2024-11-28 05:07:00,538 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) [2024-11-28 05:07:00,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1437 transitions. [2024-11-28 05:07:00,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 05:07:00,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:00,539 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:00,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 05:07:00,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:00,740 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:07:00,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:00,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1363395048, now seen corresponding path program 1 times [2024-11-28 05:07:00,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:07:00,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [649882422] [2024-11-28 05:07:00,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:00,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:00,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:00,743 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:00,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 05:07:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:01,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:07:01,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:01,103 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 [2024-11-28 05:07:01,235 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 [2024-11-28 05:07:01,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:07:01,261 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:07:01,262 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:07:01,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649882422] [2024-11-28 05:07:01,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649882422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:01,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:01,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:07:01,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003833999] [2024-11-28 05:07:01,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:01,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:07:01,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:07:01,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:07:01,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:07:01,264 INFO L87 Difference]: Start difference. First operand 1257 states and 1437 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) [2024-11-28 05:07:05,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:05,969 INFO L93 Difference]: Finished difference Result 1269 states and 1452 transitions. [2024-11-28 05:07:05,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:07:05,970 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 [2024-11-28 05:07:05,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:05,973 INFO L225 Difference]: With dead ends: 1269 [2024-11-28 05:07:05,973 INFO L226 Difference]: Without dead ends: 1269 [2024-11-28 05:07:05,974 INFO L434 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 [2024-11-28 05:07:05,974 INFO L435 NwaCegarLoop]: 1059 mSDtfsCounter, 13 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3882 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:07:05,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3882 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 05:07:05,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2024-11-28 05:07:05,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1263. [2024-11-28 05:07:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 823 states have (on average 1.732685297691373) internal successors, (1426), 1255 states have internal predecessors, (1426), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 5 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-28 05:07:05,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1447 transitions. [2024-11-28 05:07:06,000 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1447 transitions. Word has length 75 [2024-11-28 05:07:06,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:06,000 INFO L471 AbstractCegarLoop]: Abstraction has 1263 states and 1447 transitions. [2024-11-28 05:07:06,001 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) [2024-11-28 05:07:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1447 transitions. [2024-11-28 05:07:06,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 05:07:06,006 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:06,006 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:06,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 05:07:06,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:06,207 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:07:06,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:06,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1363395049, now seen corresponding path program 1 times [2024-11-28 05:07:06,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:07:06,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339693840] [2024-11-28 05:07:06,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:06,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:06,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:06,213 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:06,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 05:07:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:06,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:07:06,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:07:06,597 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:07:06,597 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:07:06,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339693840] [2024-11-28 05:07:06,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339693840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:06,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:06,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:07:06,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787353665] [2024-11-28 05:07:06,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:06,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:06,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:07:06,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:06,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:06,600 INFO L87 Difference]: Start difference. First operand 1263 states and 1447 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) [2024-11-28 05:07:06,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:06,667 INFO L93 Difference]: Finished difference Result 1260 states and 1441 transitions. [2024-11-28 05:07:06,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:06,668 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 [2024-11-28 05:07:06,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:06,672 INFO L225 Difference]: With dead ends: 1260 [2024-11-28 05:07:06,673 INFO L226 Difference]: Without dead ends: 1260 [2024-11-28 05:07:06,673 INFO L434 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 [2024-11-28 05:07:06,674 INFO L435 NwaCegarLoop]: 1074 mSDtfsCounter, 0 mSDsluCounter, 2143 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3217 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 [2024-11-28 05:07:06,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3217 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:07:06,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2024-11-28 05:07:06,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1260. [2024-11-28 05:07:06,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 820 states have (on average 1.7341463414634146) internal successors, (1422), 1253 states have internal predecessors, (1422), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-28 05:07:06,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1441 transitions. [2024-11-28 05:07:06,701 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1441 transitions. Word has length 75 [2024-11-28 05:07:06,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:06,701 INFO L471 AbstractCegarLoop]: Abstraction has 1260 states and 1441 transitions. [2024-11-28 05:07:06,702 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) [2024-11-28 05:07:06,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1441 transitions. [2024-11-28 05:07:06,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 05:07:06,703 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:06,703 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:06,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 05:07:06,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:06,904 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:07:06,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:06,905 INFO L85 PathProgramCache]: Analyzing trace with hash -6921454, now seen corresponding path program 1 times [2024-11-28 05:07:06,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:07:06,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849333807] [2024-11-28 05:07:06,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:06,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:06,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:06,909 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:06,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 05:07:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:07,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:07:07,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:07,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:07:07,333 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:07:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:07:07,438 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:07:07,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849333807] [2024-11-28 05:07:07,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849333807] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:07:07,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:07:07,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-28 05:07:07,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399528868] [2024-11-28 05:07:07,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:07:07,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:07:07,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:07:07,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:07:07,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:07:07,440 INFO L87 Difference]: Start difference. First operand 1260 states and 1441 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) [2024-11-28 05:07:07,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:07,654 INFO L93 Difference]: Finished difference Result 1272 states and 1458 transitions. [2024-11-28 05:07:07,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:07:07,655 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 [2024-11-28 05:07:07,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:07,660 INFO L225 Difference]: With dead ends: 1272 [2024-11-28 05:07:07,660 INFO L226 Difference]: Without dead ends: 1272 [2024-11-28 05:07:07,660 INFO L434 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 [2024-11-28 05:07:07,661 INFO L435 NwaCegarLoop]: 1074 mSDtfsCounter, 5 mSDsluCounter, 3213 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4287 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:07:07,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4287 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:07:07,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2024-11-28 05:07:07,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1270. [2024-11-28 05:07:07,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 829 states have (on average 1.7334137515078407) internal successors, (1437), 1262 states have internal predecessors, (1437), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-28 05:07:07,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 1456 transitions. [2024-11-28 05:07:07,685 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 1456 transitions. Word has length 76 [2024-11-28 05:07:07,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:07,686 INFO L471 AbstractCegarLoop]: Abstraction has 1270 states and 1456 transitions. [2024-11-28 05:07:07,686 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) [2024-11-28 05:07:07,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 1456 transitions. [2024-11-28 05:07:07,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-28 05:07:07,687 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:07,687 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:07,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 05:07:07,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:07,888 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:07:07,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:07,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1585988504, now seen corresponding path program 2 times [2024-11-28 05:07:07,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:07:07,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313477687] [2024-11-28 05:07:07,889 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:07:07,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:07,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:07,891 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:07,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 05:07:36,001 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:07:36,001 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:07:36,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 05:07:36,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:36,209 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:07:36,209 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 [2024-11-28 05:07:36,237 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 [2024-11-28 05:07:36,564 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:07:36,564 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 [2024-11-28 05:07:36,642 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 [2024-11-28 05:07:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 05:07:36,679 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:07:36,816 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-28 05:07:36,816 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 [2024-11-28 05:07:36,881 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:07:36,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313477687] [2024-11-28 05:07:36,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313477687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:07:36,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1641916210] [2024-11-28 05:07:36,881 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:07:36,881 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:07:36,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:07:36,888 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:07:36,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-28 05:07:38,911 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:07:38,911 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:07:38,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 05:07:38,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:07:39,205 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:07:39,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:07:39,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1641916210] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:07:39,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:07:39,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-11-28 05:07:39,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715497439] [2024-11-28 05:07:39,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:07:39,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 05:07:39,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:07:39,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 05:07:39,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=552, Unknown=7, NotChecked=0, Total=650 [2024-11-28 05:07:39,601 INFO L87 Difference]: Start difference. First operand 1270 states and 1456 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) [2024-11-28 05:07:55,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:55,857 INFO L93 Difference]: Finished difference Result 1676 states and 1986 transitions. [2024-11-28 05:07:55,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 05:07:55,858 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 [2024-11-28 05:07:55,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:55,861 INFO L225 Difference]: With dead ends: 1676 [2024-11-28 05:07:55,861 INFO L226 Difference]: Without dead ends: 1672 [2024-11-28 05:07:55,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=416, Invalid=2332, Unknown=8, NotChecked=0, Total=2756 [2024-11-28 05:07:55,863 INFO L435 NwaCegarLoop]: 702 mSDtfsCounter, 828 mSDsluCounter, 9360 mSDsCounter, 0 mSdLazyCounter, 7037 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 10062 SdHoareTripleChecker+Invalid, 7069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 7037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:07:55,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 10062 Invalid, 7069 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 7037 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2024-11-28 05:07:55,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2024-11-28 05:07:55,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1278. [2024-11-28 05:07:55,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 838 states have (on average 1.727923627684964) internal successors, (1448), 1270 states have internal predecessors, (1448), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-28 05:07:55,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1467 transitions. [2024-11-28 05:07:55,886 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1467 transitions. Word has length 79 [2024-11-28 05:07:55,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:55,886 INFO L471 AbstractCegarLoop]: Abstraction has 1278 states and 1467 transitions. [2024-11-28 05:07:55,886 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) [2024-11-28 05:07:55,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1467 transitions. [2024-11-28 05:07:55,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 05:07:55,887 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:55,887 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:55,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2024-11-28 05:07:56,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 05:07:56,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:56,288 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:07:56,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:56,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1784325079, now seen corresponding path program 1 times [2024-11-28 05:07:56,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:07:56,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035009593] [2024-11-28 05:07:56,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:56,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:56,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:56,291 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:56,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 05:07:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:56,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 05:07:56,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:07:56,917 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:07:57,706 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:07:57,707 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:07:57,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035009593] [2024-11-28 05:07:57,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035009593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:07:57,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:07:57,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-28 05:07:57,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656731605] [2024-11-28 05:07:57,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:07:57,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 05:07:57,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:07:57,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 05:07:57,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-28 05:07:57,709 INFO L87 Difference]: Start difference. First operand 1278 states and 1467 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) [2024-11-28 05:08:00,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:08:00,381 INFO L93 Difference]: Finished difference Result 1302 states and 1506 transitions. [2024-11-28 05:08:00,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 05:08:00,383 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 [2024-11-28 05:08:00,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:08:00,387 INFO L225 Difference]: With dead ends: 1302 [2024-11-28 05:08:00,387 INFO L226 Difference]: Without dead ends: 1296 [2024-11-28 05:08:00,391 INFO L434 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 [2024-11-28 05:08:00,393 INFO L435 NwaCegarLoop]: 1074 mSDtfsCounter, 26 mSDsluCounter, 12849 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 13923 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:08:00,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 13923 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 05:08:00,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2024-11-28 05:08:00,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1296. [2024-11-28 05:08:00,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 856 states have (on average 1.7184579439252337) internal successors, (1471), 1288 states have internal predecessors, (1471), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-28 05:08:00,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1490 transitions. [2024-11-28 05:08:00,420 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1490 transitions. Word has length 85 [2024-11-28 05:08:00,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:08:00,421 INFO L471 AbstractCegarLoop]: Abstraction has 1296 states and 1490 transitions. [2024-11-28 05:08:00,421 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) [2024-11-28 05:08:00,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1490 transitions. [2024-11-28 05:08:00,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 05:08:00,422 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:08:00,422 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:08:00,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 05:08:00,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:00,623 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:08:00,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:00,623 INFO L85 PathProgramCache]: Analyzing trace with hash -74962007, now seen corresponding path program 2 times [2024-11-28 05:08:00,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:08:00,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801105423] [2024-11-28 05:08:00,624 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:08:00,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:00,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:08:00,626 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:08:00,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 05:08:24,151 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:08:24,151 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:08:24,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 05:08:24,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:08:24,323 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 [2024-11-28 05:08:24,344 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:08:24,344 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 [2024-11-28 05:08:24,380 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 [2024-11-28 05:08:24,393 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 [2024-11-28 05:08:24,530 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 [2024-11-28 05:08:24,535 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 [2024-11-28 05:08:25,194 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:08:25,194 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 [2024-11-28 05:08:25,208 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 [2024-11-28 05:08:25,285 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 [2024-11-28 05:08:25,293 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 [2024-11-28 05:08:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-28 05:08:25,331 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:08:25,972 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1885 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1886 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1886) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1885) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1886 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1886) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2024-11-28 05:08:25,978 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:08:25,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801105423] [2024-11-28 05:08:25,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801105423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:08:25,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [643036763] [2024-11-28 05:08:25,978 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:08:25,978 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:08:25,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:08:25,980 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:08:25,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-28 05:08:27,859 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:08:27,859 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:08:27,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 05:08:27,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:08:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:08:29,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:08:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:08:31,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [643036763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:08:31,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:08:31,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2024-11-28 05:08:31,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522738506] [2024-11-28 05:08:31,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:08:31,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-28 05:08:31,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:08:31,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-28 05:08:31,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2024-11-28 05:08:31,970 INFO L87 Difference]: Start difference. First operand 1296 states and 1490 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) [2024-11-28 05:09:16,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:09:16,643 INFO L93 Difference]: Finished difference Result 1729 states and 2070 transitions. [2024-11-28 05:09:16,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-28 05:09:16,643 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 [2024-11-28 05:09:16,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:09:16,647 INFO L225 Difference]: With dead ends: 1729 [2024-11-28 05:09:16,648 INFO L226 Difference]: Without dead ends: 1721 [2024-11-28 05:09:16,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3088 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=3106, Invalid=14987, Unknown=1, NotChecked=266, Total=18360 [2024-11-28 05:09:16,653 INFO L435 NwaCegarLoop]: 709 mSDtfsCounter, 848 mSDsluCounter, 18901 mSDsCounter, 0 mSdLazyCounter, 14696 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 19610 SdHoareTripleChecker+Invalid, 14764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 14696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:09:16,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 19610 Invalid, 14764 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [68 Valid, 14696 Invalid, 0 Unknown, 0 Unchecked, 34.3s Time] [2024-11-28 05:09:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2024-11-28 05:09:16,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1329. [2024-11-28 05:09:16,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1329 states, 890 states have (on average 1.698876404494382) internal successors, (1512), 1321 states have internal predecessors, (1512), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-28 05:09:16,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1531 transitions. [2024-11-28 05:09:16,677 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1531 transitions. Word has length 97 [2024-11-28 05:09:16,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:09:16,677 INFO L471 AbstractCegarLoop]: Abstraction has 1329 states and 1531 transitions. [2024-11-28 05:09:16,677 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) [2024-11-28 05:09:16,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1531 transitions. [2024-11-28 05:09:16,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 05:09:16,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:09:16,679 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:16,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 05:09:16,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-28 05:09:17,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:09:17,079 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:09:17,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:17,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1000822306, now seen corresponding path program 1 times [2024-11-28 05:09:17,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:09:17,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588745146] [2024-11-28 05:09:17,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:17,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:17,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:17,084 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:17,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 05:09:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:17,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 05:09:17,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:17,643 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 [2024-11-28 05:09:17,875 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:09:17,876 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 [2024-11-28 05:09:17,902 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 [2024-11-28 05:09:18,668 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:09:18,668 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 [2024-11-28 05:09:18,822 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:09:18,823 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 [2024-11-28 05:09:18,848 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 [2024-11-28 05:09:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:09:18,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:18,944 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2545 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2545) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-28 05:09:18,958 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2545 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2545) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 05:09:19,513 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-28 05:09:19,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2024-11-28 05:09:19,531 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2591 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2545 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem36#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2591))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2545)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-28 05:09:19,534 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:09:19,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588745146] [2024-11-28 05:09:19,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588745146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:19,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [385476626] [2024-11-28 05:09:19,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:19,534 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:09:19,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:09:19,538 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:09:19,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-28 05:09:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:23,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 05:09:23,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:23,192 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 [2024-11-28 05:09:23,349 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 05:09:23,349 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 [2024-11-28 05:09:23,414 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 [2024-11-28 05:09:23,593 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 [2024-11-28 05:09:24,944 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:09:24,944 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 [2024-11-28 05:09:25,111 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:09:25,111 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 [2024-11-28 05:09:25,138 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 [2024-11-28 05:09:25,200 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:09:25,200 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:25,303 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3014 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3014) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 05:09:25,740 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3060 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3014 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3060))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3014)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:09:25,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [385476626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:25,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:09:25,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2024-11-28 05:09:25,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296517669] [2024-11-28 05:09:25,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:09:25,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 05:09:25,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:09:25,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 05:09:25,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=345, Unknown=15, NotChecked=210, Total=650 [2024-11-28 05:09:25,745 INFO L87 Difference]: Start difference. First operand 1329 states and 1531 transitions. Second operand has 19 states, 16 states have (on average 6.0) internal successors, (96), 18 states have internal predecessors, (96), 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) [2024-11-28 05:09:35,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:09:35,945 INFO L93 Difference]: Finished difference Result 1720 states and 2039 transitions. [2024-11-28 05:09:35,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:09:35,945 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 6.0) internal successors, (96), 18 states have internal predecessors, (96), 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 [2024-11-28 05:09:35,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:09:35,949 INFO L225 Difference]: With dead ends: 1720 [2024-11-28 05:09:35,950 INFO L226 Difference]: Without dead ends: 1720 [2024-11-28 05:09:35,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=455, Unknown=16, NotChecked=240, Total=812 [2024-11-28 05:09:35,950 INFO L435 NwaCegarLoop]: 701 mSDtfsCounter, 749 mSDsluCounter, 4943 mSDsCounter, 0 mSdLazyCounter, 4444 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 5644 SdHoareTripleChecker+Invalid, 4459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:09:35,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 5644 Invalid, 4459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4444 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2024-11-28 05:09:35,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2024-11-28 05:09:35,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1328. [2024-11-28 05:09:35,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 890 states have (on average 1.6977528089887641) internal successors, (1511), 1320 states have internal predecessors, (1511), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-28 05:09:35,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1530 transitions. [2024-11-28 05:09:35,971 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1530 transitions. Word has length 122 [2024-11-28 05:09:35,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:09:35,971 INFO L471 AbstractCegarLoop]: Abstraction has 1328 states and 1530 transitions. [2024-11-28 05:09:35,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 6.0) internal successors, (96), 18 states have internal predecessors, (96), 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) [2024-11-28 05:09:35,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1530 transitions. [2024-11-28 05:09:35,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 05:09:35,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:09:35,973 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:35,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-28 05:09:36,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2024-11-28 05:09:36,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:09:36,374 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:09:36,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:36,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1000822307, now seen corresponding path program 1 times [2024-11-28 05:09:36,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:09:36,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186685705] [2024-11-28 05:09:36,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:36,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:36,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:36,376 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:36,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 05:09:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:36,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-28 05:09:36,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:37,141 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:09:37,141 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 [2024-11-28 05:09:37,152 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 [2024-11-28 05:09:37,186 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 [2024-11-28 05:09:37,209 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 [2024-11-28 05:09:37,363 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 [2024-11-28 05:09:37,370 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 [2024-11-28 05:09:38,316 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:09:38,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 05:09:38,329 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 [2024-11-28 05:09:38,453 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:09:38,453 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 [2024-11-28 05:09:38,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 05:09:38,506 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 [2024-11-28 05:09:38,514 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 [2024-11-28 05:09:38,554 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:09:38,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:38,757 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3529 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3529) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_3529 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3528 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3529) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3528) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:09:38,796 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3529 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_3529) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_3529 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3528 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_3529) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_3528) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 05:09:40,254 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3529 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3528 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3621 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3620 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3620))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3621) .cse0 v_ArrVal_3529) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_3528) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_3529 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3621 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3620 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3621) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3620) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3529) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv4 32)) (bvadd .cse3 (_ bv8 32))))))) is different from false [2024-11-28 05:09:40,262 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:09:40,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186685705] [2024-11-28 05:09:40,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186685705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:40,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1306538180] [2024-11-28 05:09:40,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:40,262 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:09:40,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:09:40,264 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:09:40,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-28 05:09:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:44,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-28 05:09:44,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:44,138 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 [2024-11-28 05:09:44,144 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 [2024-11-28 05:09:44,713 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-28 05:09:44,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-28 05:09:44,742 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:09:44,743 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 [2024-11-28 05:09:44,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:09:44,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:09:44,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-28 05:09:45,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:09:45,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:09:45,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:09:46,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2024-11-28 05:09:46,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2024-11-28 05:09:46,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:09:46,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 22 [2024-11-28 05:09:46,470 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:09:46,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 05:09:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:09:46,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:46,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 239 treesize of output 167 [2024-11-28 05:10:06,336 WARN L286 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 48 DAG size of output: 47 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 05:10:48,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1306538180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:48,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:10:48,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2024-11-28 05:10:48,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666989898] [2024-11-28 05:10:48,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:48,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 05:10:48,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:48,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 05:10:48,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=516, Unknown=15, NotChecked=144, Total=756 [2024-11-28 05:10:48,732 INFO L87 Difference]: Start difference. First operand 1328 states and 1530 transitions. Second operand has 20 states, 17 states have (on average 8.882352941176471) internal successors, (151), 20 states have internal predecessors, (151), 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) [2024-11-28 05:12:58,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:12:58,808 INFO L93 Difference]: Finished difference Result 2118 states and 2554 transitions. [2024-11-28 05:12:58,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:12:58,808 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.882352941176471) internal successors, (151), 20 states have internal predecessors, (151), 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 [2024-11-28 05:12:58,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:12:58,815 INFO L225 Difference]: With dead ends: 2118 [2024-11-28 05:12:58,816 INFO L226 Difference]: Without dead ends: 2118 [2024-11-28 05:12:58,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 57.8s TimeCoverageRelationStatistics Valid=163, Invalid=890, Unknown=15, NotChecked=192, Total=1260 [2024-11-28 05:12:58,817 INFO L435 NwaCegarLoop]: 564 mSDtfsCounter, 1773 mSDsluCounter, 5521 mSDsCounter, 0 mSdLazyCounter, 9000 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 123.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 6085 SdHoareTripleChecker+Invalid, 9019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 9000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 126.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:12:58,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1780 Valid, 6085 Invalid, 9019 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 9000 Invalid, 0 Unknown, 0 Unchecked, 126.0s Time] [2024-11-28 05:12:58,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2024-11-28 05:12:58,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1327. [2024-11-28 05:12:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 890 states have (on average 1.696629213483146) internal successors, (1510), 1319 states have internal predecessors, (1510), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-28 05:12:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1529 transitions. [2024-11-28 05:12:58,842 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1529 transitions. Word has length 122 [2024-11-28 05:12:58,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:12:58,843 INFO L471 AbstractCegarLoop]: Abstraction has 1327 states and 1529 transitions. [2024-11-28 05:12:58,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.882352941176471) internal successors, (151), 20 states have internal predecessors, (151), 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) [2024-11-28 05:12:58,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1529 transitions. [2024-11-28 05:12:58,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 05:12:58,844 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:12:58,844 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:58,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2024-11-28 05:12:59,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-28 05:12:59,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:59,245 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:12:59,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:59,246 INFO L85 PathProgramCache]: Analyzing trace with hash -165319089, now seen corresponding path program 1 times [2024-11-28 05:12:59,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:12:59,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440083112] [2024-11-28 05:12:59,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:59,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:59,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:12:59,249 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:12:59,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 05:12:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:59,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-28 05:12:59,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:12:59,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:13:01,534 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:13:01,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 05:13:01,690 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 [2024-11-28 05:13:04,407 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:13:04,408 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 [2024-11-28 05:13:04,921 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:13:04,922 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 [2024-11-28 05:13:05,440 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:13:05,440 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 [2024-11-28 05:13:05,824 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 [2024-11-28 05:13:06,066 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:13:06,066 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:13:06,521 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-28 05:13:06,521 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 [2024-11-28 05:13:06,570 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4532 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4532) |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 [2024-11-28 05:13:06,630 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4532 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_4532) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse0)))) is different from false [2024-11-28 05:13:06,722 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4531 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4532 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4531)) (.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_4532) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2024-11-28 05:13:06,785 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4531 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4532 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4531))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_4532) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-28 05:13:08,546 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4578 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4531 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4532 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4578))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4531)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_4532) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-28 05:13:08,559 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:13:08,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440083112] [2024-11-28 05:13:08,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440083112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:08,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1364417837] [2024-11-28 05:13:08,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:08,560 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:13:08,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:13:08,562 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:13:08,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-28 05:13:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:30,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 05:13:30,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:30,712 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 [2024-11-28 05:13:32,371 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 05:13:32,372 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 [2024-11-28 05:13:32,765 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 [2024-11-28 05:13:33,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-28 05:13:40,767 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:13:40,767 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 [2024-11-28 05:13:41,937 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:13:41,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 05:13:42,770 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:13:42,771 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 [2024-11-28 05:13:42,957 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 [2024-11-28 05:13:43,420 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:13:43,420 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:13:44,180 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5017 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5017) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 05:13:44,270 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5016 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5017 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5016))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5017)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:13:44,333 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5016 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5017 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5016))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5017)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:13:46,111 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5063 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5016 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5017 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5063))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5016)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5017)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2024-11-28 05:13:46,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1364417837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:46,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:13:46,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-11-28 05:13:46,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802657864] [2024-11-28 05:13:46,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:13:46,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 05:13:46,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:13:46,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 05:13:46,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=383, Unknown=20, NotChecked=432, Total=930 [2024-11-28 05:13:46,128 INFO L87 Difference]: Start difference. First operand 1327 states and 1529 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) [2024-11-28 05:15:00,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:00,383 INFO L93 Difference]: Finished difference Result 1718 states and 2037 transitions. [2024-11-28 05:15:00,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:15:00,384 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 [2024-11-28 05:15:00,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:00,388 INFO L225 Difference]: With dead ends: 1718 [2024-11-28 05:15:00,388 INFO L226 Difference]: Without dead ends: 1718 [2024-11-28 05:15:00,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=104, Invalid=418, Unknown=20, NotChecked=450, Total=992 [2024-11-28 05:15:00,389 INFO L435 NwaCegarLoop]: 702 mSDtfsCounter, 744 mSDsluCounter, 6549 mSDsCounter, 0 mSdLazyCounter, 5500 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 7251 SdHoareTripleChecker+Invalid, 5524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:00,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 7251 Invalid, 5524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 5500 Invalid, 0 Unknown, 0 Unchecked, 73.8s Time] [2024-11-28 05:15:00,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2024-11-28 05:15:00,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1326. [2024-11-28 05:15:00,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 890 states have (on average 1.695505617977528) internal successors, (1509), 1318 states have internal predecessors, (1509), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-28 05:15:00,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1528 transitions. [2024-11-28 05:15:00,410 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1528 transitions. Word has length 125 [2024-11-28 05:15:00,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:00,411 INFO L471 AbstractCegarLoop]: Abstraction has 1326 states and 1528 transitions. [2024-11-28 05:15:00,411 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) [2024-11-28 05:15:00,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1528 transitions. [2024-11-28 05:15:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 05:15:00,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:00,412 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:00,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 05:15:00,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2024-11-28 05:15:00,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:15:00,814 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:15:00,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:00,814 INFO L85 PathProgramCache]: Analyzing trace with hash -165319088, now seen corresponding path program 1 times [2024-11-28 05:15:00,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:15:00,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862607914] [2024-11-28 05:15:00,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:00,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:00,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:00,817 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:00,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 05:15:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:01,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-28 05:15:01,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:01,575 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 [2024-11-28 05:15:03,048 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 [2024-11-28 05:15:03,184 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:15:03,184 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 [2024-11-28 05:15:03,360 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 [2024-11-28 05:15:03,413 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 [2024-11-28 05:15:04,216 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 [2024-11-28 05:15:04,248 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 [2024-11-28 05:15:10,163 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:15:10,163 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 [2024-11-28 05:15:10,252 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 [2024-11-28 05:15:11,153 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-28 05:15:11,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 39 [2024-11-28 05:15:11,214 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 [2024-11-28 05:15:12,462 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2024-11-28 05:15:12,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 64 [2024-11-28 05:15:12,491 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 [2024-11-28 05:15:12,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:15:12,788 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 [2024-11-28 05:15:12,817 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 [2024-11-28 05:15:13,112 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:15:13,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:15:13,951 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5549 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5549) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_5549 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5550 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5549) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5550) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:15:14,083 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5549 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5550 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5549) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5550) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5549 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5549) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd (_ bv12 32) .cse2))))))) is different from false [2024-11-28 05:15:14,349 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base|)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((|ULTIMATE.start_main_#t~mem38#1.offset| (_ BitVec 32)) (v_ArrVal_5547 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5549 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5550 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| (store .cse3 (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem38#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5547) .cse0 v_ArrVal_5549) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5550) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((|ULTIMATE.start_main_#t~mem38#1.offset| (_ BitVec 32)) (v_ArrVal_5547 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5549 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5547) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| (store .cse3 (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem38#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5549) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4)))))) is different from false [2024-11-28 05:15:19,620 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((|ULTIMATE.start_main_#t~mem38#1.offset| (_ BitVec 32)) (v_ArrVal_5547 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5549 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5641 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5642 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5641))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5642) .cse1 v_ArrVal_5547) (select (select (store .cse2 .cse1 (store (select .cse2 .cse1) (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem38#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_5549))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((|ULTIMATE.start_main_#t~mem38#1.offset| (_ BitVec 32)) (v_ArrVal_5547 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5549 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5641 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5642 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5550 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5641))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 (store (select .cse7 .cse4) (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem38#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5642) .cse4 v_ArrVal_5547) .cse5 v_ArrVal_5549) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_5550) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-28 05:15:19,675 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:15:19,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862607914] [2024-11-28 05:15:19,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862607914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:15:19,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [883342393] [2024-11-28 05:15:19,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:19,675 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:15:19,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:15:19,677 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:15:19,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-28 05:15:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:54,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-28 05:15:54,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:54,883 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 [2024-11-28 05:15:56,383 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 [2024-11-28 05:15:56,526 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:15:56,527 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 [2024-11-28 05:15:56,639 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 [2024-11-28 05:15:56,697 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 [2024-11-28 05:15:57,119 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 [2024-11-28 05:15:57,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 05:16:02,671 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:16:02,671 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 [2024-11-28 05:16:02,702 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 [2024-11-28 05:16:03,285 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:16:03,285 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 [2024-11-28 05:16:03,316 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 [2024-11-28 05:16:04,152 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:16:04,152 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 [2024-11-28 05:16:04,235 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 [2024-11-28 05:16:04,373 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 [2024-11-28 05:16:04,401 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 [2024-11-28 05:16:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:16:04,453 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:16:05,378 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_6129 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6128 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_6129) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_6128) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_6129 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_6129) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd (_ bv12 32) .cse2))))))) is different from false [2024-11-28 05:16:05,598 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6129 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6127 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6126) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6127) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6129) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6129 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6127 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6128 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6127))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6126) .cse2 v_ArrVal_6129) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_6128) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 05:16:05,738 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6129 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6127 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6126) (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6127) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6129) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6129 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6127 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6128 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6127))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6126) .cse3 v_ArrVal_6129) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_6128) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-28 05:16:09,887 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6129 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6127 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6220 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6221 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6220))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6221) .cse1 v_ArrVal_6126) (select (select (store .cse2 .cse1 v_ArrVal_6127) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_6129))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6129 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6127 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6128 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6220 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6221 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6220))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_6127))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6221) .cse4 v_ArrVal_6126) .cse5 v_ArrVal_6129) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_6128) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-28 05:16:09,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [883342393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:09,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:16:09,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2024-11-28 05:16:09,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252396270] [2024-11-28 05:16:09,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:16:09,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:16:09,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:16:09,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:16:09,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=218, Unknown=16, NotChecked=296, Total=600 [2024-11-28 05:16:09,910 INFO L87 Difference]: Start difference. First operand 1326 states and 1528 transitions. Second operand has 13 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 13 states have internal predecessors, (85), 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) [2024-11-28 05:17:14,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:17:14,564 INFO L93 Difference]: Finished difference Result 1715 states and 2034 transitions. [2024-11-28 05:17:14,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:17:14,565 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 13 states have internal predecessors, (85), 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 [2024-11-28 05:17:14,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:17:14,567 INFO L225 Difference]: With dead ends: 1715 [2024-11-28 05:17:14,567 INFO L226 Difference]: Without dead ends: 1715 [2024-11-28 05:17:14,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 242 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=125, Invalid=443, Unknown=16, NotChecked=408, Total=992 [2024-11-28 05:17:14,568 INFO L435 NwaCegarLoop]: 708 mSDtfsCounter, 739 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 4607 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 3566 SdHoareTripleChecker+Invalid, 4614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 4607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:17:14,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 3566 Invalid, 4614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 4607 Invalid, 0 Unknown, 0 Unchecked, 62.5s Time] [2024-11-28 05:17:14,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2024-11-28 05:17:14,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1325. [2024-11-28 05:17:14,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 890 states have (on average 1.6943820224719102) internal successors, (1508), 1317 states have internal predecessors, (1508), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-28 05:17:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1527 transitions. [2024-11-28 05:17:14,583 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1527 transitions. Word has length 125 [2024-11-28 05:17:14,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:17:14,584 INFO L471 AbstractCegarLoop]: Abstraction has 1325 states and 1527 transitions. [2024-11-28 05:17:14,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 13 states have internal predecessors, (85), 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) [2024-11-28 05:17:14,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1527 transitions. [2024-11-28 05:17:14,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 05:17:14,585 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:17:14,586 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:14,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 05:17:14,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2024-11-28 05:17:14,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:17:14,986 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 629 more)] === [2024-11-28 05:17:14,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:14,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1306846761, now seen corresponding path program 1 times [2024-11-28 05:17:14,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:17:14,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247927347] [2024-11-28 05:17:14,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:14,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:14,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:14,990 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:14,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 05:17:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:15,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-28 05:17:15,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:17,430 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:17:17,431 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 [2024-11-28 05:17:17,564 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 [2024-11-28 05:17:21,906 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:17:21,906 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 [2024-11-28 05:17:22,770 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:17:22,770 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 [2024-11-28 05:17:23,438 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:17:23,439 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 [2024-11-28 05:17:24,117 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:17:24,118 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 [2024-11-28 05:17:24,249 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 [2024-11-28 05:17:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:17:24,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:25,351 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6674 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6674) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 05:17:25,437 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6673 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6674 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6673))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6674)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:17:25,502 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6673 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6674 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6673))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6674)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:17:25,598 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6673 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6674 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6672))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6673)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6674)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:17:25,666 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6673 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6674 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6672))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6673)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6674)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:17:27,692 INFO L349 Elim1Store]: treesize reduction 7, result has 93.2 percent of original size [2024-11-28 05:17:27,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 108 [2024-11-28 05:17:27,749 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6720 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6673 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6674 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6720))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6672)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6673)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6674)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2024-11-28 05:17:27,765 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:17:27,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247927347] [2024-11-28 05:17:27,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247927347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:27,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1709187900] [2024-11-28 05:17:27,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:27,765 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:17:27,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:17:27,767 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:17:27,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65dca798-9092-4bb2-a922-d38be43b6e26/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-28 05:18:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:18:03,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-28 05:18:03,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:18:03,127 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 [2024-11-28 05:18:05,069 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 05:18:05,069 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 [2024-11-28 05:18:05,496 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 [2024-11-28 05:18:06,733 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 [2024-11-28 05:18:13,759 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:18:13,759 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 [2024-11-28 05:18:15,085 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:18:15,085 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 [2024-11-28 05:18:15,985 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:18:15,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 05:18:16,908 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:18:16,908 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 [2024-11-28 05:18:17,105 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 [2024-11-28 05:18:17,661 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:18:17,661 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:18:18,355 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7174 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6674 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7174))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6674)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:18:18,420 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7174 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6674 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7174))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6674)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:18:18,515 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7173 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7174 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6674 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7173))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7174)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6674)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:18:18,583 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7173 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7174 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6674 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7173))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7174)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6674)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:18:20,243 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7173 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7174 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7221 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6674 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7221))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7173)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7174)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6674)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:18:20,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1709187900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:18:20,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:18:20,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2024-11-28 05:18:20,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802908122] [2024-11-28 05:18:20,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:18:20,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 05:18:20,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:18:20,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 05:18:20,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=508, Unknown=18, NotChecked=616, Total=1260 [2024-11-28 05:18:20,259 INFO L87 Difference]: Start difference. First operand 1325 states and 1527 transitions. Second operand has 23 states, 20 states have (on average 5.6) internal successors, (112), 22 states have internal predecessors, (112), 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)