./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-2.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_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/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_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/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_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/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 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:16:35,861 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:16:35,981 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 02:16:35,988 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:16:35,989 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:16:36,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:16:36,035 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:16:36,035 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:16:36,036 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:16:36,036 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:16:36,037 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:16:36,037 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:16:36,037 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:16:36,038 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:16:36,038 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:16:36,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:16:36,040 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:16:36,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:16:36,040 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:16:36,040 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:16:36,040 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:16:36,040 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:16:36,041 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:16:36,041 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:16:36,041 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:16:36,041 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:16:36,041 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:16:36,041 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:16:36,041 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:16:36,041 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:16:36,041 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:16:36,041 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:16:36,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:16:36,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:16:36,042 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:16:36,042 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:16:36,042 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:16:36,042 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:16:36,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:16:36,044 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:16:36,044 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:16:36,044 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:16:36,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:16:36,044 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:16:36,045 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:16:36,045 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:16:36,045 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:16:36,045 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_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/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 -> 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 [2024-11-28 02:16:36,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:16:36,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:16:36,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:16:36,433 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:16:36,433 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:16:36,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-2.i [2024-11-28 02:16:39,550 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/data/d0b4f20e0/6bd0ca344d614d87824d5cd4fe6f4c03/FLAGa6b58bc5c [2024-11-28 02:16:40,153 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:16:40,154 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-2.i [2024-11-28 02:16:40,183 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/data/d0b4f20e0/6bd0ca344d614d87824d5cd4fe6f4c03/FLAGa6b58bc5c [2024-11-28 02:16:40,201 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/data/d0b4f20e0/6bd0ca344d614d87824d5cd4fe6f4c03 [2024-11-28 02:16:40,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:16:40,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:16:40,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:16:40,207 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:16:40,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:16:40,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:16:40" (1/1) ... [2024-11-28 02:16:40,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f68f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:40, skipping insertion in model container [2024-11-28 02:16:40,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:16:40" (1/1) ... [2024-11-28 02:16:40,279 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:16:40,799 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 02:16:40,866 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 02:16:40,878 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 02:16:40,888 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 02:16:40,905 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 02:16:40,978 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 02:16:40,983 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 02:16:40,989 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 02:16:41,003 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 02:16:41,030 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 02:16:41,032 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 02:16:41,039 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 02:16:41,040 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 02:16:41,044 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 02:16:41,045 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 02:16:41,053 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 02:16:41,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:16:41,088 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 02:16:41,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d7bf214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:41, skipping insertion in model container [2024-11-28 02:16:41,089 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:16:41,093 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-28 02:16:41,096 INFO L158 Benchmark]: Toolchain (without parser) took 889.24ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 71.1MB in the end (delta: 20.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:16:41,096 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 167.8MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:16:41,097 INFO L158 Benchmark]: CACSL2BoogieTranslator took 886.30ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 71.1MB in the end (delta: 20.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:16:41,098 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 167.8MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 886.30ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 71.1MB in the end (delta: 20.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 754]: 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_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/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_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/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_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/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 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:16:44,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:16:44,163 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 02:16:44,173 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:16:44,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:16:44,228 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:16:44,228 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:16:44,229 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:16:44,229 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:16:44,229 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:16:44,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:16:44,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:16:44,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:16:44,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:16:44,230 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:16:44,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:16:44,232 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:16:44,232 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:16:44,233 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:16:44,233 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:16:44,233 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:16:44,234 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:16:44,234 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:16:44,234 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:16:44,234 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:16:44,234 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 02:16:44,234 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 02:16:44,235 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:16:44,235 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:16:44,235 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:16:44,235 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:16:44,235 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:16:44,235 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:16:44,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:16:44,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:16:44,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:16:44,236 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:16:44,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:16:44,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:16:44,236 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:16:44,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:16:44,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:16:44,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:16:44,236 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 02:16:44,237 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 02:16:44,237 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:16:44,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:16:44,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:16:44,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:16:44,237 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_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/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 -> 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 [2024-11-28 02:16:44,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:16:44,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:16:44,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:16:44,636 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:16:44,636 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:16:44,637 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-2.i [2024-11-28 02:16:47,965 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/data/18ecc3098/e0dd9f0103d447d386a5bc8e494a6a1a/FLAG91ccb2f1d [2024-11-28 02:16:48,442 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:16:48,443 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-2.i [2024-11-28 02:16:48,463 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/data/18ecc3098/e0dd9f0103d447d386a5bc8e494a6a1a/FLAG91ccb2f1d [2024-11-28 02:16:48,490 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/data/18ecc3098/e0dd9f0103d447d386a5bc8e494a6a1a [2024-11-28 02:16:48,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:16:48,495 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:16:48,498 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:16:48,499 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:16:48,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:16:48,510 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:16:48" (1/1) ... [2024-11-28 02:16:48,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c7c475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:48, skipping insertion in model container [2024-11-28 02:16:48,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:16:48" (1/1) ... [2024-11-28 02:16:48,591 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:16:49,221 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 02:16:49,301 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 02:16:49,310 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:16:49,316 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 02:16:49,327 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 02:16:49,385 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:16:49,390 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 02:16:49,395 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 02:16:49,403 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 02:16:49,420 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:16:49,422 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 02:16:49,425 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 02:16:49,427 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:16:49,429 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 02:16:49,430 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 02:16:49,436 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 02:16:49,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:16:49,477 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-28 02:16:49,498 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:16:49,555 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 02:16:49,578 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 02:16:49,582 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 02:16:49,586 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:16:49,593 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 02:16:49,644 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 02:16:49,647 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 02:16:49,654 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 02:16:49,671 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 02:16:49,690 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 02:16:49,694 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 02:16:49,697 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 02:16:49,700 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:16:49,701 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 02:16:49,702 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 02:16:49,707 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:16:49,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:16:49,725 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:16:49,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:16:49,954 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:16:49,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:49 WrapperNode [2024-11-28 02:16:49,955 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:16:49,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:16:49,957 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:16:49,957 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:16:49,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:49" (1/1) ... [2024-11-28 02:16:50,012 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:49" (1/1) ... [2024-11-28 02:16:50,097 INFO L138 Inliner]: procedures = 179, calls = 377, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1272 [2024-11-28 02:16:50,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:16:50,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:16:50,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:16:50,099 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:16:50,114 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:49" (1/1) ... [2024-11-28 02:16:50,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:49" (1/1) ... [2024-11-28 02:16:50,134 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:49" (1/1) ... [2024-11-28 02:16:50,344 INFO L175 MemorySlicer]: Split 357 memory accesses to 2 slices as follows [2, 355]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 90 writes are split as follows [0, 90]. [2024-11-28 02:16:50,345 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:49" (1/1) ... [2024-11-28 02:16:50,345 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:49" (1/1) ... [2024-11-28 02:16:50,435 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:49" (1/1) ... [2024-11-28 02:16:50,438 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:49" (1/1) ... [2024-11-28 02:16:50,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:49" (1/1) ... [2024-11-28 02:16:50,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:49" (1/1) ... [2024-11-28 02:16:50,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:49" (1/1) ... [2024-11-28 02:16:50,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:16:50,474 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:16:50,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:16:50,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:16:50,475 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:49" (1/1) ... [2024-11-28 02:16:50,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:16:50,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:16:50,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:16:50,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:16:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-28 02:16:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-28 02:16:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-28 02:16:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-28 02:16:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 02:16:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 02:16:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 02:16:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 02:16:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:16:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:16:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:16:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:16:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:16:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:16:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:16:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 02:16:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-28 02:16:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 02:16:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 02:16:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:16:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:16:50,920 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:16:50,923 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:16:50,927 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 02:16:51,013 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 02:16:58,632 INFO L? ?]: Removed 1537 outVars from TransFormulas that were not future-live. [2024-11-28 02:16:58,632 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:16:58,680 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:16:58,680 INFO L312 CfgBuilder]: Removed 39 assume(true) statements. [2024-11-28 02:16:58,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:16:58 BoogieIcfgContainer [2024-11-28 02:16:58,681 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:16:58,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:16:58,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:16:58,691 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:16:58,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:16:48" (1/3) ... [2024-11-28 02:16:58,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751e498d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:16:58, skipping insertion in model container [2024-11-28 02:16:58,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:49" (2/3) ... [2024-11-28 02:16:58,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751e498d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:16:58, skipping insertion in model container [2024-11-28 02:16:58,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:16:58" (3/3) ... [2024-11-28 02:16:58,694 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_nondet_test4-2.i [2024-11-28 02:16:58,713 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:16:58,715 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_nondet_test4-2.i that has 3 procedures, 1436 locations, 1 initial locations, 41 loop locations, and 733 error locations. [2024-11-28 02:16:58,818 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:16:58,837 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;@1c08cb2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:16:58,837 INFO L334 AbstractCegarLoop]: Starting to check reachability of 733 error locations. [2024-11-28 02:16:58,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 1431 states, 696 states have (on average 2.2456896551724137) internal successors, (1563), 1423 states have internal predecessors, (1563), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:16:58,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-28 02:16:58,855 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:16:58,856 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-28 02:16:58,856 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr732ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:16:58,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:16:58,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1481848, now seen corresponding path program 1 times [2024-11-28 02:16:58,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:16:58,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229132073] [2024-11-28 02:16:58,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:16:58,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:16:58,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:16:58,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:16:58,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:16:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:16:59,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:16:59,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:16:59,150 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 02:16:59,151 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:16:59,152 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:16:59,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229132073] [2024-11-28 02:16:59,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229132073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:16:59,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:16:59,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:16:59,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141037233] [2024-11-28 02:16:59,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:16:59,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:16:59,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:16:59,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:16:59,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:16:59,210 INFO L87 Difference]: Start difference. First operand has 1431 states, 696 states have (on average 2.2456896551724137) internal successors, (1563), 1423 states have internal predecessors, (1563), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:17:02,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:02,346 INFO L93 Difference]: Finished difference Result 1622 states and 1701 transitions. [2024-11-28 02:17:02,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:17:02,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-28 02:17:02,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:02,370 INFO L225 Difference]: With dead ends: 1622 [2024-11-28 02:17:02,370 INFO L226 Difference]: Without dead ends: 1618 [2024-11-28 02:17:02,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:17:02,375 INFO L435 NwaCegarLoop]: 1382 mSDtfsCounter, 220 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:17:02,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 2136 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 02:17:02,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2024-11-28 02:17:02,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1429. [2024-11-28 02:17:02,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1429 states, 705 states have (on average 2.120567375886525) internal successors, (1495), 1421 states have internal predecessors, (1495), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:17:02,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 1507 transitions. [2024-11-28 02:17:02,480 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 1507 transitions. Word has length 4 [2024-11-28 02:17:02,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:02,480 INFO L471 AbstractCegarLoop]: Abstraction has 1429 states and 1507 transitions. [2024-11-28 02:17:02,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:17:02,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 1507 transitions. [2024-11-28 02:17:02,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 02:17:02,481 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:02,481 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:17:02,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:17:02,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:02,682 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr620REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:17:02,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:02,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1136454119, now seen corresponding path program 1 times [2024-11-28 02:17:02,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:17:02,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464907564] [2024-11-28 02:17:02,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:02,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:02,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:02,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:02,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:17:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:02,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:17:02,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:02,931 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 02:17:02,931 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:17:02,931 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:17:02,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464907564] [2024-11-28 02:17:02,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464907564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:02,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:02,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:17:02,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175050474] [2024-11-28 02:17:02,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:02,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:17:02,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:17:02,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:17:02,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:17:02,935 INFO L87 Difference]: Start difference. First operand 1429 states and 1507 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:17:04,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:04,467 INFO L93 Difference]: Finished difference Result 2139 states and 2246 transitions. [2024-11-28 02:17:04,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:17:04,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 02:17:04,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:04,478 INFO L225 Difference]: With dead ends: 2139 [2024-11-28 02:17:04,478 INFO L226 Difference]: Without dead ends: 2139 [2024-11-28 02:17:04,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:17:04,480 INFO L435 NwaCegarLoop]: 1472 mSDtfsCounter, 752 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 4066 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:17:04,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 4066 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 02:17:04,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2024-11-28 02:17:04,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 1780. [2024-11-28 02:17:04,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1780 states, 1056 states have (on average 2.109848484848485) internal successors, (2228), 1769 states have internal predecessors, (2228), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:17:04,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2246 transitions. [2024-11-28 02:17:04,546 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2246 transitions. Word has length 7 [2024-11-28 02:17:04,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:04,546 INFO L471 AbstractCegarLoop]: Abstraction has 1780 states and 2246 transitions. [2024-11-28 02:17:04,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:17:04,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2246 transitions. [2024-11-28 02:17:04,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 02:17:04,547 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:04,547 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:17:04,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:17:04,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:04,752 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:17:04,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:04,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1134636893, now seen corresponding path program 1 times [2024-11-28 02:17:04,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:17:04,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900361694] [2024-11-28 02:17:04,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:04,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:04,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:04,758 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:04,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:17:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:04,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:17:04,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:04,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 02:17:04,996 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 02:17:04,996 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:17:04,996 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:17:04,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900361694] [2024-11-28 02:17:04,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900361694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:04,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:04,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:17:04,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240353979] [2024-11-28 02:17:04,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:04,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:17:04,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:17:04,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:17:04,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:17:04,999 INFO L87 Difference]: Start difference. First operand 1780 states and 2246 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:17:08,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:08,213 INFO L93 Difference]: Finished difference Result 1686 states and 2102 transitions. [2024-11-28 02:17:08,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:17:08,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 02:17:08,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:08,220 INFO L225 Difference]: With dead ends: 1686 [2024-11-28 02:17:08,220 INFO L226 Difference]: Without dead ends: 1686 [2024-11-28 02:17:08,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 02:17:08,221 INFO L435 NwaCegarLoop]: 771 mSDtfsCounter, 1030 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:17:08,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 882 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 02:17:08,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2024-11-28 02:17:08,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1686. [2024-11-28 02:17:08,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1056 states have (on average 1.9734848484848484) internal successors, (2084), 1675 states have internal predecessors, (2084), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:17:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2102 transitions. [2024-11-28 02:17:08,263 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2102 transitions. Word has length 7 [2024-11-28 02:17:08,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:08,264 INFO L471 AbstractCegarLoop]: Abstraction has 1686 states and 2102 transitions. [2024-11-28 02:17:08,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:17:08,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2102 transitions. [2024-11-28 02:17:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 02:17:08,265 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:08,265 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:17:08,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:17:08,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:08,467 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:17:08,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:08,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1134636894, now seen corresponding path program 1 times [2024-11-28 02:17:08,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:17:08,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750634839] [2024-11-28 02:17:08,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:08,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:08,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:08,471 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:08,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:17:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:08,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:17:08,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:08,649 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 02:17:08,706 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 02:17:08,706 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:17:08,707 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:17:08,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750634839] [2024-11-28 02:17:08,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750634839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:08,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:08,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:17:08,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778030421] [2024-11-28 02:17:08,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:08,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:17:08,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:17:08,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:17:08,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:17:08,708 INFO L87 Difference]: Start difference. First operand 1686 states and 2102 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:17:12,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:12,862 INFO L93 Difference]: Finished difference Result 2129 states and 2652 transitions. [2024-11-28 02:17:12,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:17:12,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 02:17:12,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:12,872 INFO L225 Difference]: With dead ends: 2129 [2024-11-28 02:17:12,873 INFO L226 Difference]: Without dead ends: 2129 [2024-11-28 02:17:12,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 02:17:12,874 INFO L435 NwaCegarLoop]: 1223 mSDtfsCounter, 523 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:17:12,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1772 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 02:17:12,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2024-11-28 02:17:12,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1973. [2024-11-28 02:17:12,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1353 states have (on average 1.9283074648928307) internal successors, (2609), 1962 states have internal predecessors, (2609), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:17:12,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 2627 transitions. [2024-11-28 02:17:12,937 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 2627 transitions. Word has length 7 [2024-11-28 02:17:12,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:12,937 INFO L471 AbstractCegarLoop]: Abstraction has 1973 states and 2627 transitions. [2024-11-28 02:17:12,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:17:12,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 2627 transitions. [2024-11-28 02:17:12,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 02:17:12,938 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:12,938 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:17:12,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:13,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:13,139 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr627REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:17:13,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:13,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1210869708, now seen corresponding path program 1 times [2024-11-28 02:17:13,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:17:13,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707698420] [2024-11-28 02:17:13,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:13,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:13,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:13,144 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:13,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:17:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:13,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:17:13,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:13,386 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 02:17:13,386 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:17:13,387 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:17:13,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707698420] [2024-11-28 02:17:13,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707698420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:13,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:13,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:17:13,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055840506] [2024-11-28 02:17:13,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:13,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:17:13,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:17:13,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:17:13,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:17:13,388 INFO L87 Difference]: Start difference. First operand 1973 states and 2627 transitions. Second operand has 3 states, 3 states have (on average 3.0) 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 02:17:13,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:13,747 INFO L93 Difference]: Finished difference Result 2049 states and 2567 transitions. [2024-11-28 02:17:13,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:17:13,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) 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 02:17:13,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:13,755 INFO L225 Difference]: With dead ends: 2049 [2024-11-28 02:17:13,756 INFO L226 Difference]: Without dead ends: 2049 [2024-11-28 02:17:13,756 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 02:17:13,757 INFO L435 NwaCegarLoop]: 1440 mSDtfsCounter, 316 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:17:13,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 2744 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:17:13,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2024-11-28 02:17:13,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 1833. [2024-11-28 02:17:13,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1213 states have (on average 1.9373454245671888) internal successors, (2350), 1822 states have internal predecessors, (2350), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:17:13,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2368 transitions. [2024-11-28 02:17:13,801 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2368 transitions. Word has length 9 [2024-11-28 02:17:13,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:13,801 INFO L471 AbstractCegarLoop]: Abstraction has 1833 states and 2368 transitions. [2024-11-28 02:17:13,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) 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 02:17:13,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2368 transitions. [2024-11-28 02:17:13,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 02:17:13,802 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:13,803 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:17:13,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:14,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:14,004 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr629REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:17:14,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:14,004 INFO L85 PathProgramCache]: Analyzing trace with hash -403271100, now seen corresponding path program 1 times [2024-11-28 02:17:14,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:17:14,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654949932] [2024-11-28 02:17:14,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:14,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:14,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:14,007 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:14,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:17:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:14,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:17:14,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:14,285 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 02:17:14,287 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:17:14,287 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:17:14,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654949932] [2024-11-28 02:17:14,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654949932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:14,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:14,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:17:14,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026447191] [2024-11-28 02:17:14,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:14,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:17:14,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:17:14,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:17:14,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:17:14,290 INFO L87 Difference]: Start difference. First operand 1833 states and 2368 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 02:17:15,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:15,717 INFO L93 Difference]: Finished difference Result 2049 states and 2566 transitions. [2024-11-28 02:17:15,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:17:15,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2024-11-28 02:17:15,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:15,726 INFO L225 Difference]: With dead ends: 2049 [2024-11-28 02:17:15,726 INFO L226 Difference]: Without dead ends: 2043 [2024-11-28 02:17:15,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 02:17:15,727 INFO L435 NwaCegarLoop]: 1440 mSDtfsCounter, 318 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 3966 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:17:15,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 3966 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:17:15,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2024-11-28 02:17:15,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1827. [2024-11-28 02:17:15,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1207 states have (on average 1.9411764705882353) internal successors, (2343), 1816 states have internal predecessors, (2343), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:17:15,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2361 transitions. [2024-11-28 02:17:15,778 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2361 transitions. Word has length 12 [2024-11-28 02:17:15,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:15,778 INFO L471 AbstractCegarLoop]: Abstraction has 1827 states and 2361 transitions. [2024-11-28 02:17:15,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 02:17:15,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2361 transitions. [2024-11-28 02:17:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 02:17:15,779 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:15,779 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:17:15,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:15,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:15,980 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:17:15,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:15,981 INFO L85 PathProgramCache]: Analyzing trace with hash -567156950, now seen corresponding path program 1 times [2024-11-28 02:17:15,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:17:15,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331339339] [2024-11-28 02:17:15,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:15,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:15,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:15,984 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:15,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:17:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:16,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:17:16,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:16,203 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 02:17:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:17:16,258 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:17:16,259 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:17:16,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331339339] [2024-11-28 02:17:16,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331339339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:16,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:16,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:17:16,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548009036] [2024-11-28 02:17:16,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:16,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:17:16,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:17:16,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:17:16,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:17:16,261 INFO L87 Difference]: Start difference. First operand 1827 states and 2361 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 02:17:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:20,196 INFO L93 Difference]: Finished difference Result 1812 states and 2323 transitions. [2024-11-28 02:17:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:17:20,197 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 02:17:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:20,203 INFO L225 Difference]: With dead ends: 1812 [2024-11-28 02:17:20,204 INFO L226 Difference]: Without dead ends: 1812 [2024-11-28 02:17:20,204 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 02:17:20,204 INFO L435 NwaCegarLoop]: 745 mSDtfsCounter, 1081 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:17:20,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1424 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-28 02:17:20,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2024-11-28 02:17:20,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1804. [2024-11-28 02:17:20,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1207 states have (on average 1.9030654515327257) internal successors, (2297), 1793 states have internal predecessors, (2297), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:17:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 2315 transitions. [2024-11-28 02:17:20,276 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 2315 transitions. Word has length 13 [2024-11-28 02:17:20,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:20,276 INFO L471 AbstractCegarLoop]: Abstraction has 1804 states and 2315 transitions. [2024-11-28 02:17:20,276 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 02:17:20,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 2315 transitions. [2024-11-28 02:17:20,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 02:17:20,277 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:20,278 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:17:20,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:20,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:20,479 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:17:20,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:20,479 INFO L85 PathProgramCache]: Analyzing trace with hash -567156949, now seen corresponding path program 1 times [2024-11-28 02:17:20,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:17:20,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [959917866] [2024-11-28 02:17:20,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:20,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:20,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:20,481 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:20,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:17:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:20,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:17:20,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:20,695 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 02:17:20,793 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 02:17:20,794 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:17:20,794 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:17:20,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959917866] [2024-11-28 02:17:20,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959917866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:20,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:20,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:17:20,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280990939] [2024-11-28 02:17:20,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:20,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:17:20,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:17:20,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:17:20,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:17:20,796 INFO L87 Difference]: Start difference. First operand 1804 states and 2315 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 02:17:27,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:27,030 INFO L93 Difference]: Finished difference Result 2090 states and 2492 transitions. [2024-11-28 02:17:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:17:27,031 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 02:17:27,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:27,037 INFO L225 Difference]: With dead ends: 2090 [2024-11-28 02:17:27,037 INFO L226 Difference]: Without dead ends: 2090 [2024-11-28 02:17:27,038 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 02:17:27,038 INFO L435 NwaCegarLoop]: 1421 mSDtfsCounter, 648 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 1725 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:17:27,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 2790 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1725 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-28 02:17:27,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2024-11-28 02:17:27,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1920. [2024-11-28 02:17:27,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1323 states have (on average 1.8420256991685564) internal successors, (2437), 1909 states have internal predecessors, (2437), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:17:27,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2455 transitions. [2024-11-28 02:17:27,081 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2455 transitions. Word has length 13 [2024-11-28 02:17:27,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:27,082 INFO L471 AbstractCegarLoop]: Abstraction has 1920 states and 2455 transitions. [2024-11-28 02:17:27,082 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 02:17:27,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2455 transitions. [2024-11-28 02:17:27,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 02:17:27,083 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:27,083 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] [2024-11-28 02:17:27,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:27,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:27,284 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:17:27,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:27,285 INFO L85 PathProgramCache]: Analyzing trace with hash -136933571, now seen corresponding path program 1 times [2024-11-28 02:17:27,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:17:27,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [794305866] [2024-11-28 02:17:27,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:27,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:27,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:27,289 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:27,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:17:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:27,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:17:27,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:27,617 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 02:17:27,949 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 02:17:27,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:17:28,706 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 02:17:28,706 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:17:28,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794305866] [2024-11-28 02:17:28,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794305866] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:17:28,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:17:28,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-28 02:17:28,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997943381] [2024-11-28 02:17:28,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:17:28,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:17:28,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:17:28,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:17:28,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:17:28,710 INFO L87 Difference]: Start difference. First operand 1920 states and 2455 transitions. Second operand has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 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 02:17:44,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:44,215 INFO L93 Difference]: Finished difference Result 2483 states and 3028 transitions. [2024-11-28 02:17:44,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:17:44,217 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 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 32 [2024-11-28 02:17:44,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:44,224 INFO L225 Difference]: With dead ends: 2483 [2024-11-28 02:17:44,224 INFO L226 Difference]: Without dead ends: 2483 [2024-11-28 02:17:44,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 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 02:17:44,225 INFO L435 NwaCegarLoop]: 1463 mSDtfsCounter, 2185 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 2770 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2187 SdHoareTripleChecker+Valid, 3786 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:17:44,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2187 Valid, 3786 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2770 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2024-11-28 02:17:44,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2024-11-28 02:17:44,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2086. [2024-11-28 02:17:44,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2086 states, 1489 states have (on average 1.793821356615178) internal successors, (2671), 2075 states have internal predecessors, (2671), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:17:44,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 2689 transitions. [2024-11-28 02:17:44,290 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 2689 transitions. Word has length 32 [2024-11-28 02:17:44,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:44,290 INFO L471 AbstractCegarLoop]: Abstraction has 2086 states and 2689 transitions. [2024-11-28 02:17:44,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 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 02:17:44,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 2689 transitions. [2024-11-28 02:17:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 02:17:44,292 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:44,292 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] [2024-11-28 02:17:44,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:17:44,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:44,493 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:17:44,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:44,495 INFO L85 PathProgramCache]: Analyzing trace with hash -730835680, now seen corresponding path program 1 times [2024-11-28 02:17:44,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:17:44,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936975002] [2024-11-28 02:17:44,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:44,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:44,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:44,500 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:44,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:17:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:44,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:17:44,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:44,817 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 02:17:44,818 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:17:44,818 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:17:44,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936975002] [2024-11-28 02:17:44,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936975002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:44,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:44,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:17:44,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857686972] [2024-11-28 02:17:44,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:44,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:17:44,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:17:44,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:17:44,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:17:44,820 INFO L87 Difference]: Start difference. First operand 2086 states and 2689 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 02:17:44,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:44,961 INFO L93 Difference]: Finished difference Result 1771 states and 2249 transitions. [2024-11-28 02:17:44,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:17:44,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-28 02:17:44,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:44,968 INFO L225 Difference]: With dead ends: 1771 [2024-11-28 02:17:44,968 INFO L226 Difference]: Without dead ends: 1771 [2024-11-28 02:17:44,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 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 02:17:44,969 INFO L435 NwaCegarLoop]: 1286 mSDtfsCounter, 56 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3785 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 02:17:44,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3785 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:17:44,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2024-11-28 02:17:44,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1769. [2024-11-28 02:17:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1195 states have (on average 1.8652719665271966) internal successors, (2229), 1758 states have internal predecessors, (2229), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:17:45,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 2247 transitions. [2024-11-28 02:17:45,007 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 2247 transitions. Word has length 48 [2024-11-28 02:17:45,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:45,008 INFO L471 AbstractCegarLoop]: Abstraction has 1769 states and 2247 transitions. [2024-11-28 02:17:45,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 02:17:45,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 2247 transitions. [2024-11-28 02:17:45,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 02:17:45,009 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:45,010 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:17:45,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:45,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:45,210 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:17:45,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:45,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2042360492, now seen corresponding path program 1 times [2024-11-28 02:17:45,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:17:45,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570324457] [2024-11-28 02:17:45,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:45,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:45,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:45,214 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:45,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:17:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:45,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:17:45,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:45,518 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 02:17:46,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:17:46,285 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 02:17:46,311 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:17:46,311 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 02:17:46,324 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 02:17:46,324 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:17:46,324 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:17:46,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570324457] [2024-11-28 02:17:46,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570324457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:46,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:46,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:17:46,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155016376] [2024-11-28 02:17:46,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:46,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:17:46,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:17:46,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:17:46,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:17:46,326 INFO L87 Difference]: Start difference. First operand 1769 states and 2247 transitions. Second operand has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:17:50,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:50,735 INFO L93 Difference]: Finished difference Result 1685 states and 2122 transitions. [2024-11-28 02:17:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:17:50,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-28 02:17:50,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:50,741 INFO L225 Difference]: With dead ends: 1685 [2024-11-28 02:17:50,741 INFO L226 Difference]: Without dead ends: 1685 [2024-11-28 02:17:50,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 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 02:17:50,742 INFO L435 NwaCegarLoop]: 548 mSDtfsCounter, 1864 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:17:50,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1870 Valid, 922 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 02:17:50,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2024-11-28 02:17:50,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1508. [2024-11-28 02:17:50,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1018 states have (on average 1.7426326129666012) internal successors, (1774), 1497 states have internal predecessors, (1774), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:17:50,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 1792 transitions. [2024-11-28 02:17:50,778 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 1792 transitions. Word has length 56 [2024-11-28 02:17:50,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:50,779 INFO L471 AbstractCegarLoop]: Abstraction has 1508 states and 1792 transitions. [2024-11-28 02:17:50,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:17:50,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 1792 transitions. [2024-11-28 02:17:50,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 02:17:50,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:50,784 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] [2024-11-28 02:17:50,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:17:50,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:50,985 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:17:50,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:50,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1870442902, now seen corresponding path program 1 times [2024-11-28 02:17:50,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:17:50,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377876582] [2024-11-28 02:17:50,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:50,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:50,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:50,990 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:50,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:17:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:51,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:17:51,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:51,354 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 02:17:51,375 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 02:17:51,418 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 02:17:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:17:51,434 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:17:51,435 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:17:51,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377876582] [2024-11-28 02:17:51,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377876582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:51,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:51,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:17:51,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102825052] [2024-11-28 02:17:51,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:51,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:17:51,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:17:51,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:17:51,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:17:51,437 INFO L87 Difference]: Start difference. First operand 1508 states and 1792 transitions. Second operand has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 02:17:55,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:55,814 INFO L93 Difference]: Finished difference Result 1507 states and 1790 transitions. [2024-11-28 02:17:55,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:17:55,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2024-11-28 02:17:55,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:55,819 INFO L225 Difference]: With dead ends: 1507 [2024-11-28 02:17:55,819 INFO L226 Difference]: Without dead ends: 1507 [2024-11-28 02:17:55,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 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 02:17:55,820 INFO L435 NwaCegarLoop]: 1213 mSDtfsCounter, 2 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 1802 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:17:55,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3057 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1802 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 02:17:55,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2024-11-28 02:17:55,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1507. [2024-11-28 02:17:55,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1018 states have (on average 1.7406679764243616) internal successors, (1772), 1496 states have internal predecessors, (1772), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:17:55,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1790 transitions. [2024-11-28 02:17:55,844 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1790 transitions. Word has length 61 [2024-11-28 02:17:55,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:55,844 INFO L471 AbstractCegarLoop]: Abstraction has 1507 states and 1790 transitions. [2024-11-28 02:17:55,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 02:17:55,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1790 transitions. [2024-11-28 02:17:55,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 02:17:55,846 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:55,846 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] [2024-11-28 02:17:55,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:17:56,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:56,050 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:17:56,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:56,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1870442901, now seen corresponding path program 1 times [2024-11-28 02:17:56,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:17:56,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527805123] [2024-11-28 02:17:56,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:56,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:56,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:56,055 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:56,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:17:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:56,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:17:56,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:56,391 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 02:17:56,420 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 02:17:56,435 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 02:17:56,510 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 02:17:56,542 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 02:17:56,542 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:17:56,543 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:17:56,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527805123] [2024-11-28 02:17:56,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527805123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:56,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:56,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:17:56,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850821010] [2024-11-28 02:17:56,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:56,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:17:56,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:17:56,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:17:56,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:17:56,544 INFO L87 Difference]: Start difference. First operand 1507 states and 1790 transitions. Second operand has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 02:18:02,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:18:02,442 INFO L93 Difference]: Finished difference Result 1506 states and 1788 transitions. [2024-11-28 02:18:02,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:18:02,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2024-11-28 02:18:02,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:18:02,447 INFO L225 Difference]: With dead ends: 1506 [2024-11-28 02:18:02,448 INFO L226 Difference]: Without dead ends: 1506 [2024-11-28 02:18:02,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 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 02:18:02,448 INFO L435 NwaCegarLoop]: 1213 mSDtfsCounter, 1 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:18:02,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3088 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-28 02:18:02,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-28 02:18:02,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2024-11-28 02:18:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1016 states have (on average 1.7421259842519685) internal successors, (1770), 1495 states have internal predecessors, (1770), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:18:02,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 1788 transitions. [2024-11-28 02:18:02,475 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 1788 transitions. Word has length 61 [2024-11-28 02:18:02,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:18:02,476 INFO L471 AbstractCegarLoop]: Abstraction has 1506 states and 1788 transitions. [2024-11-28 02:18:02,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 02:18:02,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 1788 transitions. [2024-11-28 02:18:02,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 02:18:02,477 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:02,477 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:18:02,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 02:18:02,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:02,682 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:18:02,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:02,682 INFO L85 PathProgramCache]: Analyzing trace with hash 552675633, now seen corresponding path program 1 times [2024-11-28 02:18:02,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:18:02,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037202456] [2024-11-28 02:18:02,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:02,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:02,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:02,685 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:18:02,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:18:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:03,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:18:03,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:18:03,091 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 02:18:03,249 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 23 treesize of output 11 [2024-11-28 02:18:03,273 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 02:18:03,273 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:18:03,273 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:18:03,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037202456] [2024-11-28 02:18:03,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037202456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:18:03,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:18:03,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:18:03,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602915766] [2024-11-28 02:18:03,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:18:03,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:18:03,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:18:03,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:18:03,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:18:03,276 INFO L87 Difference]: Start difference. First operand 1506 states and 1788 transitions. Second operand has 7 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 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 02:18:08,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:18:08,579 INFO L93 Difference]: Finished difference Result 1524 states and 1818 transitions. [2024-11-28 02:18:08,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:18:08,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 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 69 [2024-11-28 02:18:08,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:18:08,587 INFO L225 Difference]: With dead ends: 1524 [2024-11-28 02:18:08,587 INFO L226 Difference]: Without dead ends: 1524 [2024-11-28 02:18:08,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 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 02:18:08,588 INFO L435 NwaCegarLoop]: 1202 mSDtfsCounter, 6 mSDsluCounter, 3117 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4319 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:18:08,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4319 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-28 02:18:08,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2024-11-28 02:18:08,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1515. [2024-11-28 02:18:08,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1024 states have (on average 1.7392578125) internal successors, (1781), 1502 states have internal predecessors, (1781), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-28 02:18:08,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1808 transitions. [2024-11-28 02:18:08,617 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1808 transitions. Word has length 69 [2024-11-28 02:18:08,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:18:08,618 INFO L471 AbstractCegarLoop]: Abstraction has 1515 states and 1808 transitions. [2024-11-28 02:18:08,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 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 02:18:08,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1808 transitions. [2024-11-28 02:18:08,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 02:18:08,619 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:08,619 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:18:08,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 02:18:08,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:08,820 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:18:08,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:08,820 INFO L85 PathProgramCache]: Analyzing trace with hash 552675634, now seen corresponding path program 1 times [2024-11-28 02:18:08,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:18:08,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521289759] [2024-11-28 02:18:08,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:08,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:08,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:08,823 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:18:08,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:18:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:09,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:18:09,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:18:09,164 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 02:18:09,165 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:18:09,165 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:18:09,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521289759] [2024-11-28 02:18:09,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521289759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:18:09,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:18:09,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:18:09,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136130049] [2024-11-28 02:18:09,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:18:09,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:18:09,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:18:09,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:18:09,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:18:09,167 INFO L87 Difference]: Start difference. First operand 1515 states and 1808 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 02:18:09,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:18:09,258 INFO L93 Difference]: Finished difference Result 1509 states and 1794 transitions. [2024-11-28 02:18:09,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:18:09,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 69 [2024-11-28 02:18:09,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:18:09,269 INFO L225 Difference]: With dead ends: 1509 [2024-11-28 02:18:09,271 INFO L226 Difference]: Without dead ends: 1509 [2024-11-28 02:18:09,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 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 02:18:09,274 INFO L435 NwaCegarLoop]: 1212 mSDtfsCounter, 0 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3628 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:18:09,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3628 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:18:09,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2024-11-28 02:18:09,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1509. [2024-11-28 02:18:09,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1018 states have (on average 1.7416502946954813) internal successors, (1773), 1498 states have internal predecessors, (1773), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-28 02:18:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 1794 transitions. [2024-11-28 02:18:09,310 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 1794 transitions. Word has length 69 [2024-11-28 02:18:09,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:18:09,314 INFO L471 AbstractCegarLoop]: Abstraction has 1509 states and 1794 transitions. [2024-11-28 02:18:09,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 02:18:09,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 1794 transitions. [2024-11-28 02:18:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 02:18:09,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:09,315 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] [2024-11-28 02:18:09,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 02:18:09,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:09,516 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:18:09,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:09,516 INFO L85 PathProgramCache]: Analyzing trace with hash 511803710, now seen corresponding path program 1 times [2024-11-28 02:18:09,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:18:09,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96028036] [2024-11-28 02:18:09,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:09,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:09,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:09,519 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:18:09,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:18:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:09,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:18:09,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:18:09,889 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 02:18:09,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:18:09,991 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 02:18:09,991 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:18:09,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96028036] [2024-11-28 02:18:09,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96028036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:18:09,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:18:09,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-28 02:18:09,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291232283] [2024-11-28 02:18:09,992 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:18:09,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:18:09,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:18:09,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:18:09,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:18:09,993 INFO L87 Difference]: Start difference. First operand 1509 states and 1794 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 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 02:18:10,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:18:10,315 INFO L93 Difference]: Finished difference Result 1521 states and 1813 transitions. [2024-11-28 02:18:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:18:10,317 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 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 70 [2024-11-28 02:18:10,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:18:10,327 INFO L225 Difference]: With dead ends: 1521 [2024-11-28 02:18:10,328 INFO L226 Difference]: Without dead ends: 1521 [2024-11-28 02:18:10,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 132 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 02:18:10,329 INFO L435 NwaCegarLoop]: 1211 mSDtfsCounter, 5 mSDsluCounter, 6027 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7238 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:18:10,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7238 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:18:10,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2024-11-28 02:18:10,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1519. [2024-11-28 02:18:10,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1027 states have (on average 1.7409931840311588) internal successors, (1788), 1507 states have internal predecessors, (1788), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-28 02:18:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 1809 transitions. [2024-11-28 02:18:10,368 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 1809 transitions. Word has length 70 [2024-11-28 02:18:10,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:18:10,368 INFO L471 AbstractCegarLoop]: Abstraction has 1519 states and 1809 transitions. [2024-11-28 02:18:10,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 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 02:18:10,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 1809 transitions. [2024-11-28 02:18:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 02:18:10,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:10,369 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] [2024-11-28 02:18:10,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 02:18:10,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:10,570 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:18:10,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:10,572 INFO L85 PathProgramCache]: Analyzing trace with hash 776815729, now seen corresponding path program 2 times [2024-11-28 02:18:10,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:18:10,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930111202] [2024-11-28 02:18:10,573 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:18:10,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:10,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:10,576 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:18:10,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:18:16,990 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:18:16,990 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:18:17,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:18:17,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:18:17,142 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:18:17,142 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 02:18:17,169 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 02:18:17,433 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:18:17,434 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 02:18:17,490 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 02:18:17,525 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 02:18:17,525 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:18:17,647 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-28 02:18:17,647 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 02:18:17,730 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:18:17,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930111202] [2024-11-28 02:18:17,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930111202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:18:17,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [456277050] [2024-11-28 02:18:17,730 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:18:17,730 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 02:18:17,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 02:18:17,736 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 02:18:17,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-28 02:18:19,154 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:18:19,154 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:18:19,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:18:19,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:18:19,446 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 02:18:19,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:18:19,889 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 02:18:19,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [456277050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:18:19,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:18:19,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-11-28 02:18:19,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939247896] [2024-11-28 02:18:19,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:18:19,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 02:18:19,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:18:19,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 02:18:19,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=552, Unknown=7, NotChecked=0, Total=650 [2024-11-28 02:18:19,892 INFO L87 Difference]: Start difference. First operand 1519 states and 1809 transitions. Second operand has 24 states, 23 states have (on average 5.956521739130435) internal successors, (137), 23 states have internal predecessors, (137), 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 02:18:41,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:18:41,147 INFO L93 Difference]: Finished difference Result 1535 states and 1832 transitions. [2024-11-28 02:18:41,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 02:18:41,148 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.956521739130435) internal successors, (137), 23 states have internal predecessors, (137), 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 73 [2024-11-28 02:18:41,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:18:41,153 INFO L225 Difference]: With dead ends: 1535 [2024-11-28 02:18:41,153 INFO L226 Difference]: Without dead ends: 1529 [2024-11-28 02:18:41,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=395, Invalid=2248, Unknown=9, NotChecked=0, Total=2652 [2024-11-28 02:18:41,154 INFO L435 NwaCegarLoop]: 723 mSDtfsCounter, 982 mSDsluCounter, 10145 mSDsCounter, 0 mSdLazyCounter, 9098 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 10868 SdHoareTripleChecker+Invalid, 9143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 9098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:18:41,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 10868 Invalid, 9143 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 9098 Invalid, 0 Unknown, 0 Unchecked, 19.8s Time] [2024-11-28 02:18:41,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2024-11-28 02:18:41,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2024-11-28 02:18:41,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1036 states have (on average 1.7345559845559846) internal successors, (1797), 1515 states have internal predecessors, (1797), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-28 02:18:41,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 1818 transitions. [2024-11-28 02:18:41,180 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 1818 transitions. Word has length 73 [2024-11-28 02:18:41,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:18:41,180 INFO L471 AbstractCegarLoop]: Abstraction has 1527 states and 1818 transitions. [2024-11-28 02:18:41,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.956521739130435) internal successors, (137), 23 states have internal predecessors, (137), 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 02:18:41,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 1818 transitions. [2024-11-28 02:18:41,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-28 02:18:41,181 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:41,181 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] [2024-11-28 02:18:41,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 02:18:41,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-11-28 02:18:41,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 02:18:41,582 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:18:41,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:41,582 INFO L85 PathProgramCache]: Analyzing trace with hash 334045522, now seen corresponding path program 1 times [2024-11-28 02:18:41,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:18:41,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183039050] [2024-11-28 02:18:41,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:41,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:41,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:41,585 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:18:41,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:18:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:42,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:18:42,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:18:42,229 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 02:18:42,229 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:18:43,124 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 02:18:43,125 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:18:43,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183039050] [2024-11-28 02:18:43,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183039050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:18:43,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:18:43,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-28 02:18:43,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977024765] [2024-11-28 02:18:43,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:18:43,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 02:18:43,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:18:43,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 02:18:43,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:18:43,127 INFO L87 Difference]: Start difference. First operand 1527 states and 1818 transitions. Second operand has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 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 02:18:46,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:18:46,000 INFO L93 Difference]: Finished difference Result 1551 states and 1857 transitions. [2024-11-28 02:18:46,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 02:18:46,001 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 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 79 [2024-11-28 02:18:46,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:18:46,005 INFO L225 Difference]: With dead ends: 1551 [2024-11-28 02:18:46,006 INFO L226 Difference]: Without dead ends: 1545 [2024-11-28 02:18:46,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 02:18:46,007 INFO L435 NwaCegarLoop]: 1211 mSDtfsCounter, 19 mSDsluCounter, 13276 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 14487 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:18:46,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 14487 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:18:46,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2024-11-28 02:18:46,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1545. [2024-11-28 02:18:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1054 states have (on average 1.7267552182163188) internal successors, (1820), 1533 states have internal predecessors, (1820), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-28 02:18:46,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 1841 transitions. [2024-11-28 02:18:46,033 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 1841 transitions. Word has length 79 [2024-11-28 02:18:46,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:18:46,034 INFO L471 AbstractCegarLoop]: Abstraction has 1545 states and 1841 transitions. [2024-11-28 02:18:46,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 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 02:18:46,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 1841 transitions. [2024-11-28 02:18:46,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 02:18:46,035 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:46,035 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] [2024-11-28 02:18:46,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 02:18:46,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:46,236 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:18:46,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:46,236 INFO L85 PathProgramCache]: Analyzing trace with hash -553950446, now seen corresponding path program 2 times [2024-11-28 02:18:46,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:18:46,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538113514] [2024-11-28 02:18:46,237 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:18:46,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:46,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:46,239 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:18:46,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:19:05,184 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:19:05,184 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:19:05,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 02:19:05,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:19:05,389 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:19:05,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 02:19:05,398 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 02:19:05,466 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 02:19:05,477 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 02:19:05,637 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 02:19:05,644 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 02:19:06,328 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:19:06,328 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 02:19:06,345 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 02:19:06,403 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 02:19:06,411 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 02:19:06,443 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 02:19:06,443 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:19:07,207 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:19:07,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538113514] [2024-11-28 02:19:07,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538113514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:19:07,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1002479663] [2024-11-28 02:19:07,207 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:19:07,208 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 02:19:07,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 02:19:07,209 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 02:19:07,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-28 02:19:08,731 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:19:08,731 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:19:08,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 02:19:08,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:19:10,415 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 02:19:10,416 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:19:14,144 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 02:19:14,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1002479663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:19:14,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:19:14,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2024-11-28 02:19:14,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462360720] [2024-11-28 02:19:14,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:19:14,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-28 02:19:14,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:19:14,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-28 02:19:14,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=2954, Unknown=6, NotChecked=0, Total=3660 [2024-11-28 02:19:14,149 INFO L87 Difference]: Start difference. First operand 1545 states and 1841 transitions. Second operand has 58 states, 57 states have (on average 3.0350877192982457) internal successors, (173), 58 states have internal predecessors, (173), 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 02:20:26,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:20:26,214 INFO L93 Difference]: Finished difference Result 1647 states and 1998 transitions. [2024-11-28 02:20:26,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2024-11-28 02:20:26,214 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.0350877192982457) internal successors, (173), 58 states have internal predecessors, (173), 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 91 [2024-11-28 02:20:26,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:20:26,219 INFO L225 Difference]: With dead ends: 1647 [2024-11-28 02:20:26,220 INFO L226 Difference]: Without dead ends: 1631 [2024-11-28 02:20:26,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6172 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=5454, Invalid=19662, Unknown=6, NotChecked=0, Total=25122 [2024-11-28 02:20:26,225 INFO L435 NwaCegarLoop]: 724 mSDtfsCounter, 994 mSDsluCounter, 23961 mSDsCounter, 0 mSdLazyCounter, 21501 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 24685 SdHoareTripleChecker+Invalid, 21525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 21501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:20:26,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 24685 Invalid, 21525 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [24 Valid, 21501 Invalid, 0 Unknown, 0 Unchecked, 51.9s Time] [2024-11-28 02:20:26,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2024-11-28 02:20:26,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2024-11-28 02:20:26,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1140 states have (on average 1.682456140350877) internal successors, (1918), 1618 states have internal predecessors, (1918), 9 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-28 02:20:26,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 1939 transitions. [2024-11-28 02:20:26,271 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 1939 transitions. Word has length 91 [2024-11-28 02:20:26,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:20:26,271 INFO L471 AbstractCegarLoop]: Abstraction has 1631 states and 1939 transitions. [2024-11-28 02:20:26,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.0350877192982457) internal successors, (173), 58 states have internal predecessors, (173), 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 02:20:26,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 1939 transitions. [2024-11-28 02:20:26,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 02:20:26,273 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:20:26,273 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] [2024-11-28 02:20:26,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2024-11-28 02:20:26,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 02:20:26,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:20:26,674 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:20:26,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:20:26,674 INFO L85 PathProgramCache]: Analyzing trace with hash -351102565, now seen corresponding path program 1 times [2024-11-28 02:20:26,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:20:26,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030264094] [2024-11-28 02:20:26,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:20:26,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:20:26,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:20:26,677 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:20:26,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 02:20:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:20:27,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 02:20:27,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:20:27,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 02:20:27,439 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:20:27,439 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 02:20:27,462 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 02:20:28,254 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:20:28,254 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 02:20:28,414 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:20:28,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 02:20:28,438 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 02:20:28,465 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 02:20:28,465 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:20:28,601 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2048 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2048) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 02:20:29,172 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-28 02:20:29,172 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 02:20:29,184 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2048 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2094 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2094))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2048)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem32#1.base|)) is different from false [2024-11-28 02:20:29,186 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:20:29,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030264094] [2024-11-28 02:20:29,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030264094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:20:29,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1820174350] [2024-11-28 02:20:29,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:20:29,187 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 02:20:29,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 02:20:29,189 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 02:20:29,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2024-11-28 02:20:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:20:32,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 02:20:32,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:20:32,953 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 02:20:32,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-28 02:20:33,447 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-28 02:20:33,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-11-28 02:20:33,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:20:33,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2024-11-28 02:20:35,618 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:20:35,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-28 02:20:35,893 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:20:35,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-28 02:20:35,953 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 43 treesize of output 19 [2024-11-28 02:20:36,029 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 02:20:36,029 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:20:36,539 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2546 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2048 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2546))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2048)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-28 02:20:36,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1820174350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:20:36,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:20:36,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 20 [2024-11-28 02:20:36,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254081882] [2024-11-28 02:20:36,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:20:36,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 02:20:36,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:20:36,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 02:20:36,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=414, Unknown=11, NotChecked=132, Total=650 [2024-11-28 02:20:36,543 INFO L87 Difference]: Start difference. First operand 1631 states and 1939 transitions. Second operand has 21 states, 18 states have (on average 8.0) internal successors, (144), 20 states have internal predecessors, (144), 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 02:20:55,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:20:55,175 INFO L93 Difference]: Finished difference Result 2883 states and 3333 transitions. [2024-11-28 02:20:55,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:20:55,176 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 8.0) internal successors, (144), 20 states have internal predecessors, (144), 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 116 [2024-11-28 02:20:55,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:20:55,190 INFO L225 Difference]: With dead ends: 2883 [2024-11-28 02:20:55,190 INFO L226 Difference]: Without dead ends: 2883 [2024-11-28 02:20:55,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 218 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=202, Invalid=1055, Unknown=15, NotChecked=210, Total=1482 [2024-11-28 02:20:55,191 INFO L435 NwaCegarLoop]: 629 mSDtfsCounter, 3497 mSDsluCounter, 6764 mSDsCounter, 0 mSdLazyCounter, 7538 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 7393 SdHoareTripleChecker+Invalid, 7598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 7538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:20:55,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3511 Valid, 7393 Invalid, 7598 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 7538 Invalid, 0 Unknown, 0 Unchecked, 18.0s Time] [2024-11-28 02:20:55,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2024-11-28 02:20:55,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 2209. [2024-11-28 02:20:55,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1714 states have (on average 1.634189031505251) internal successors, (2801), 2189 states have internal predecessors, (2801), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2024-11-28 02:20:55,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 2836 transitions. [2024-11-28 02:20:55,240 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 2836 transitions. Word has length 116 [2024-11-28 02:20:55,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:20:55,241 INFO L471 AbstractCegarLoop]: Abstraction has 2209 states and 2836 transitions. [2024-11-28 02:20:55,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 8.0) internal successors, (144), 20 states have internal predecessors, (144), 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 02:20:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 2836 transitions. [2024-11-28 02:20:55,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 02:20:55,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:20:55,242 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] [2024-11-28 02:20:55,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2024-11-28 02:20:55,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 02:20:55,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:20:55,644 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:20:55,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:20:55,644 INFO L85 PathProgramCache]: Analyzing trace with hash -351102564, now seen corresponding path program 1 times [2024-11-28 02:20:55,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:20:55,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268137816] [2024-11-28 02:20:55,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:20:55,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:20:55,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:20:55,650 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:20:55,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 02:20:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:20:56,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-28 02:20:56,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:20:56,321 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 02:20:56,467 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 02:20:56,492 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:20:56,493 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 02:20:56,535 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 02:20:56,542 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 02:20:56,727 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 02:20:56,734 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 02:20:57,806 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:20:57,807 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 02:20:57,819 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 02:20:57,957 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:20:57,957 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 02:20:57,970 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 02:20:58,009 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 02:20:58,019 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 02:20:58,055 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 02:20:58,055 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:20:58,265 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2998 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_2998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_2998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2999 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_2998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_2999) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:20:58,310 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_2998 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_2998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_2998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2999 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_2998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_2999) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 02:20:59,903 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2999 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3090))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3091) .cse0 v_ArrVal_2998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_2999) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_3091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2998 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3091) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2024-11-28 02:20:59,912 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:20:59,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268137816] [2024-11-28 02:20:59,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268137816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:20:59,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1449211755] [2024-11-28 02:20:59,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:20:59,912 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 02:20:59,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 02:20:59,914 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 02:20:59,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-28 02:21:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:03,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-28 02:21:03,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:21:03,536 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 02:21:03,687 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 02:21:03,702 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:21:03,703 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 02:21:03,722 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 02:21:03,733 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 02:21:03,804 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 02:21:03,814 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 02:21:04,709 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:21:04,709 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 02:21:04,719 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 02:21:04,802 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:21:04,802 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 02:21:04,817 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 02:21:04,858 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 02:21:04,869 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 02:21:04,871 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 02:21:04,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:21:05,183 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3543 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_3543) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3544 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3543 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_3543) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_3544) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 02:21:06,697 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3543 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3636) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3635) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3543) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3544 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3543 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3635))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3636) .cse2 v_ArrVal_3543) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_3544) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 02:21:06,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1449211755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:21:06,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:21:06,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-28 02:21:06,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95999865] [2024-11-28 02:21:06,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:21:06,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:21:06,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:21:06,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:21:06,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=125, Unknown=10, NotChecked=130, Total=306 [2024-11-28 02:21:06,708 INFO L87 Difference]: Start difference. First operand 2209 states and 2836 transitions. Second operand has 10 states, 8 states have (on average 9.0) internal successors, (72), 10 states have internal predecessors, (72), 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 02:21:22,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:21:22,923 INFO L93 Difference]: Finished difference Result 2208 states and 2833 transitions. [2024-11-28 02:21:22,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:21:22,924 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 9.0) internal successors, (72), 10 states have internal predecessors, (72), 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 116 [2024-11-28 02:21:22,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:21:22,928 INFO L225 Difference]: With dead ends: 2208 [2024-11-28 02:21:22,928 INFO L226 Difference]: Without dead ends: 2208 [2024-11-28 02:21:22,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 225 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=242, Unknown=11, NotChecked=180, Total=506 [2024-11-28 02:21:22,929 INFO L435 NwaCegarLoop]: 726 mSDtfsCounter, 908 mSDsluCounter, 3086 mSDsCounter, 0 mSdLazyCounter, 6123 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 3812 SdHoareTripleChecker+Invalid, 6134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 6123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:21:22,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 3812 Invalid, 6134 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 6123 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2024-11-28 02:21:22,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2024-11-28 02:21:22,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 2208. [2024-11-28 02:21:22,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2208 states, 1714 states have (on average 1.632438739789965) internal successors, (2798), 2188 states have internal predecessors, (2798), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2024-11-28 02:21:22,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 2833 transitions. [2024-11-28 02:21:22,966 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 2833 transitions. Word has length 116 [2024-11-28 02:21:22,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:21:22,966 INFO L471 AbstractCegarLoop]: Abstraction has 2208 states and 2833 transitions. [2024-11-28 02:21:22,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 9.0) internal successors, (72), 10 states have internal predecessors, (72), 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 02:21:22,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 2833 transitions. [2024-11-28 02:21:22,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-28 02:21:22,968 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:21:22,968 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:21:22,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 02:21:23,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-28 02:21:23,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 02:21:23,369 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:21:23,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:23,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1450846248, now seen corresponding path program 1 times [2024-11-28 02:21:23,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:21:23,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412518622] [2024-11-28 02:21:23,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:21:23,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:21:23,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:21:23,371 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:21:23,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 02:21:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:24,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-28 02:21:24,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:21:24,025 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 02:21:24,146 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:21:24,146 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 02:21:24,165 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 02:21:24,764 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:21:24,764 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 02:21:24,870 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:21:24,870 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 02:21:24,953 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:21:24,953 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 02:21:24,974 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 02:21:25,000 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 02:21:25,000 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:21:25,045 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4057 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4057) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (_ bv0 1))) is different from false [2024-11-28 02:21:25,057 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4057 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4057) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 02:21:25,075 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4057 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4056 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_4056))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4057)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:21:25,087 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4057 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4056 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4056))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4057)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:21:25,577 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2024-11-28 02:21:25,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 60 [2024-11-28 02:21:25,589 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4057 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4103 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4056 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem32#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_4103))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4056)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4057)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-28 02:21:25,591 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:21:25,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412518622] [2024-11-28 02:21:25,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412518622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:21:25,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [800791268] [2024-11-28 02:21:25,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:21:25,592 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 02:21:25,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 02:21:25,594 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 02:21:25,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-28 02:21:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:39,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 02:21:39,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:21:39,649 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 02:21:39,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-28 02:21:40,035 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-28 02:21:40,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-11-28 02:21:40,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:21:40,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2024-11-28 02:21:42,023 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:21:42,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-28 02:21:42,293 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:21:42,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-28 02:21:42,480 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:21:42,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-28 02:21:42,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2024-11-28 02:21:42,623 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 02:21:42,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:21:42,730 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4525 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4525) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2024-11-28 02:21:42,747 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4524 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4525 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_4524))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4525)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:21:42,760 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4524 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4525 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4524))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4525)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:21:43,264 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4524 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4525 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4571 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_4571))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4524)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4525)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:21:43,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [800791268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:21:43,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:21:43,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 22 [2024-11-28 02:21:43,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292123768] [2024-11-28 02:21:43,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:21:43,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 02:21:43,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:21:43,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 02:21:43,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=501, Unknown=15, NotChecked=486, Total=1122 [2024-11-28 02:21:43,271 INFO L87 Difference]: Start difference. First operand 2208 states and 2833 transitions. Second operand has 23 states, 20 states have (on average 7.5) internal successors, (150), 22 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:22:00,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:22:00,181 INFO L93 Difference]: Finished difference Result 2879 states and 3327 transitions. [2024-11-28 02:22:00,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 02:22:00,183 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 7.5) internal successors, (150), 22 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 119 [2024-11-28 02:22:00,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:22:00,192 INFO L225 Difference]: With dead ends: 2879 [2024-11-28 02:22:00,193 INFO L226 Difference]: Without dead ends: 2879 [2024-11-28 02:22:00,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=241, Invalid=1259, Unknown=18, NotChecked=738, Total=2256 [2024-11-28 02:22:00,195 INFO L435 NwaCegarLoop]: 628 mSDtfsCounter, 2705 mSDsluCounter, 6025 mSDsCounter, 0 mSdLazyCounter, 6750 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2719 SdHoareTripleChecker+Valid, 6653 SdHoareTripleChecker+Invalid, 6797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 6750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:22:00,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2719 Valid, 6653 Invalid, 6797 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 6750 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time] [2024-11-28 02:22:00,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2024-11-28 02:22:00,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2207. [2024-11-28 02:22:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1714 states have (on average 1.630688448074679) internal successors, (2795), 2187 states have internal predecessors, (2795), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2024-11-28 02:22:00,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 2830 transitions. [2024-11-28 02:22:00,260 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 2830 transitions. Word has length 119 [2024-11-28 02:22:00,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:22:00,261 INFO L471 AbstractCegarLoop]: Abstraction has 2207 states and 2830 transitions. [2024-11-28 02:22:00,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 7.5) internal successors, (150), 22 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:22:00,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 2830 transitions. [2024-11-28 02:22:00,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-28 02:22:00,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:22:00,264 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:00,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 02:22:00,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2024-11-28 02:22:00,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 02:22:00,665 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:22:00,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:00,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1450846247, now seen corresponding path program 1 times [2024-11-28 02:22:00,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:22:00,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226575034] [2024-11-28 02:22:00,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:00,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:00,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:00,668 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:00,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 02:22:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:01,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-28 02:22:01,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:01,414 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 02:22:01,590 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 02:22:01,607 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:22:01,607 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 02:22:01,640 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 02:22:01,645 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 02:22:01,773 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 02:22:01,778 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 02:22:02,597 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:22:02,597 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 02:22:02,607 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 02:22:02,732 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:22:02,732 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 02:22:02,746 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 02:22:02,851 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:22:02,852 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 02:22:02,861 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 02:22:02,887 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 02:22:02,894 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 02:22:02,924 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 02:22:02,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:03,091 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5041 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd (_ bv12 32) .cse1)))))) is different from false [2024-11-28 02:22:03,120 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5041 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv8 32)) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2024-11-28 02:22:03,184 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5038 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5039 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_5039))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_5038) .cse0 v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5038 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5039 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_5038) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_5039) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd (_ bv12 32) .cse3)))))) is different from false [2024-11-28 02:22:03,239 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5038 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5039 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5038) (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_5039) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5038 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5039 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_5039))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5038) .cse3 v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_5041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-28 02:22:04,914 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5038 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5039 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5132 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5133 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_5133))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_5132) .cse1 v_ArrVal_5038) (select (select (store .cse2 .cse1 v_ArrVal_5039) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_5040))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5038 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5039 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5132 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5133 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_5133))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_5039))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_5132) .cse4 v_ArrVal_5038) .cse5 v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_5041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-28 02:22:04,927 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:22:04,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226575034] [2024-11-28 02:22:04,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226575034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:04,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2072705911] [2024-11-28 02:22:04,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:04,927 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 02:22:04,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 02:22:04,932 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 02:22:04,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-28 02:22:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:19,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-28 02:22:19,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:19,665 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 02:22:19,806 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 02:22:19,824 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:22:19,825 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 02:22:19,844 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 02:22:19,858 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 02:22:19,929 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 02:22:19,934 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 02:22:20,785 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:22:20,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 02:22:20,799 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 02:22:20,878 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:22:20,878 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 02:22:20,889 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 02:22:20,957 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:22:20,957 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 02:22:20,967 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 02:22:20,997 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 02:22:21,005 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 02:22:21,010 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 02:22:21,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:21,074 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5602 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5602) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd (_ bv12 32) .cse1)))))) is different from false [2024-11-28 02:22:21,104 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5602 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_5602) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 02:22:21,152 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5601 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5600 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_5600) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_5601) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5601 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5602 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5600 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_5601))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_5600) .cse2 v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5602) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 02:22:21,188 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5601 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5602 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5600 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5601))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5600) .cse1 v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5602) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_5601 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5600 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5600) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5601) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-28 02:22:22,806 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5601 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5600 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5694 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5695 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_5695))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_5694) .cse1 v_ArrVal_5600) (select (select (store .cse2 .cse1 v_ArrVal_5601) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_5603))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_5601 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5602 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5600 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5694 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5695 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_5695))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_5601))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_5694) .cse4 v_ArrVal_5600) .cse5 v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_5602) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-28 02:22:22,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2072705911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:22,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:22:22,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-11-28 02:22:22,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352371092] [2024-11-28 02:22:22,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:22,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:22:22,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:22:22,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:22:22,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=134, Unknown=10, NotChecked=310, Total=506 [2024-11-28 02:22:22,818 INFO L87 Difference]: Start difference. First operand 2207 states and 2830 transitions. Second operand has 11 states, 9 states have (on average 8.333333333333334) internal successors, (75), 11 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:22:34,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:22:34,926 INFO L93 Difference]: Finished difference Result 2206 states and 2827 transitions. [2024-11-28 02:22:34,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:22:34,927 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 8.333333333333334) internal successors, (75), 11 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2024-11-28 02:22:34,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:22:34,932 INFO L225 Difference]: With dead ends: 2206 [2024-11-28 02:22:34,932 INFO L226 Difference]: Without dead ends: 2206 [2024-11-28 02:22:34,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=90, Invalid=282, Unknown=10, NotChecked=430, Total=812 [2024-11-28 02:22:34,933 INFO L435 NwaCegarLoop]: 725 mSDtfsCounter, 906 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 4557 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 2966 SdHoareTripleChecker+Invalid, 4568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:22:34,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 2966 Invalid, 4568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 4557 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2024-11-28 02:22:34,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2024-11-28 02:22:34,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2206. [2024-11-28 02:22:34,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 1714 states have (on average 1.6289381563593932) internal successors, (2792), 2186 states have internal predecessors, (2792), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2024-11-28 02:22:34,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 2827 transitions. [2024-11-28 02:22:34,964 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 2827 transitions. Word has length 119 [2024-11-28 02:22:34,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:22:34,964 INFO L471 AbstractCegarLoop]: Abstraction has 2206 states and 2827 transitions. [2024-11-28 02:22:34,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 8.333333333333334) internal successors, (75), 11 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:22:34,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 2827 transitions. [2024-11-28 02:22:34,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 02:22:34,966 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:22:34,966 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 02:22:34,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2024-11-28 02:22:35,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 02:22:35,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:35,367 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:22:35,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:35,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1904365662, now seen corresponding path program 1 times [2024-11-28 02:22:35,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:22:35,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846259475] [2024-11-28 02:22:35,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:35,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:35,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:35,369 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:35,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 02:22:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:36,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-28 02:22:36,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:36,300 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:22:36,301 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 02:22:36,324 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 02:22:36,655 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:22:36,655 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 02:22:36,745 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:22:36,746 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 02:22:36,862 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:22:36,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 02:22:36,983 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:22:36,984 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 02:22:37,010 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 02:22:37,048 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 02:22:37,049 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:37,201 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6131) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 02:22:37,225 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6130))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:22:37,240 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6130))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:22:37,283 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2024-11-28 02:22:37,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 60 [2024-11-28 02:22:37,301 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6129 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem34#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_6129))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6130)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-28 02:22:37,321 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6129 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| .cse3 v_ArrVal_6129))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6130)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3)))) is different from false [2024-11-28 02:22:37,807 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6129 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6177 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_6177)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (let ((.cse2 (store .cse3 .cse4 v_ArrVal_6129))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6130)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse4)))) is different from false [2024-11-28 02:22:37,809 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:22:37,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846259475] [2024-11-28 02:22:37,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846259475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:37,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [411002884] [2024-11-28 02:22:37,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:37,810 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 02:22:37,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 02:22:37,812 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 02:22:37,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-28 02:22:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:57,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-28 02:22:57,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:57,364 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 02:22:57,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-28 02:22:57,724 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-28 02:22:57,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-11-28 02:22:57,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:22:58,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2024-11-28 02:22:59,798 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:22:59,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-28 02:23:00,064 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:23:00,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-28 02:23:00,246 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:23:00,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-28 02:23:00,409 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:23:00,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-28 02:23:00,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2024-11-28 02:23:00,542 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 02:23:00,542 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:00,638 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6614 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6614))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:23:00,651 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6614 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6614))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:23:00,676 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6613 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6614 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_6613))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6614)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:23:00,696 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6613 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6614 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6613))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6614)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:23:01,124 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6613 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6614 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6661 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_6661))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6613)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6614)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:23:01,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [411002884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:01,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:23:01,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2024-11-28 02:23:01,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459594929] [2024-11-28 02:23:01,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:01,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 02:23:01,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:23:01,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 02:23:01,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=540, Unknown=18, NotChecked=638, Total=1332 [2024-11-28 02:23:01,136 INFO L87 Difference]: Start difference. First operand 2206 states and 2827 transitions. Second operand has 24 states, 21 states have (on average 7.428571428571429) internal successors, (156), 24 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:23:13,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:13,446 INFO L93 Difference]: Finished difference Result 2875 states and 3321 transitions. [2024-11-28 02:23:13,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 02:23:13,447 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.428571428571429) internal successors, (156), 24 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 122 [2024-11-28 02:23:13,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:13,453 INFO L225 Difference]: With dead ends: 2875 [2024-11-28 02:23:13,453 INFO L226 Difference]: Without dead ends: 2875 [2024-11-28 02:23:13,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 231 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=233, Invalid=1122, Unknown=21, NotChecked=880, Total=2256 [2024-11-28 02:23:13,454 INFO L435 NwaCegarLoop]: 628 mSDtfsCounter, 3464 mSDsluCounter, 4953 mSDsCounter, 0 mSdLazyCounter, 5729 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3478 SdHoareTripleChecker+Valid, 5581 SdHoareTripleChecker+Invalid, 5799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 5729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:13,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3478 Valid, 5581 Invalid, 5799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 5729 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2024-11-28 02:23:13,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2024-11-28 02:23:13,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2205. [2024-11-28 02:23:13,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 1714 states have (on average 1.6271878646441074) internal successors, (2789), 2185 states have internal predecessors, (2789), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2024-11-28 02:23:13,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 2824 transitions. [2024-11-28 02:23:13,483 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 2824 transitions. Word has length 122 [2024-11-28 02:23:13,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:13,484 INFO L471 AbstractCegarLoop]: Abstraction has 2205 states and 2824 transitions. [2024-11-28 02:23:13,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.428571428571429) internal successors, (156), 24 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:23:13,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 2824 transitions. [2024-11-28 02:23:13,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 02:23:13,485 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:13,485 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 02:23:13,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 02:23:13,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2024-11-28 02:23:13,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 02:23:13,890 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:23:13,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:13,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1904365661, now seen corresponding path program 1 times [2024-11-28 02:23:13,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:23:13,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318214797] [2024-11-28 02:23:13,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:13,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:13,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:13,893 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:13,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 02:23:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:14,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-28 02:23:14,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:14,813 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:23:14,814 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 02:23:14,822 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 02:23:14,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:23:14,854 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 02:23:14,961 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 02:23:14,965 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 02:23:15,739 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:23:15,739 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 02:23:15,749 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 02:23:15,871 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:23:15,872 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 02:23:15,882 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 02:23:15,991 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:23:15,991 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 02:23:16,000 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 02:23:16,105 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:23:16,105 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 02:23:16,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:23:16,143 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 02:23:16,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 02:23:16,192 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 02:23:16,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:16,516 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7147 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_7147) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 02:23:16,628 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7145 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7147 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7144))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7145) .cse0 v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7147) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7145 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7145) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7144) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse3) (bvadd (_ bv24 32) .cse3)))))) is different from false [2024-11-28 02:23:16,692 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7145 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7147 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7144))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7145) .cse1 v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7147) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7145 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7145) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7144) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv20 32)) (bvadd .cse4 (_ bv24 32)))))))) is different from false [2024-11-28 02:23:17,186 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7142 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7143 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7145 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_7142))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_7143) .cse1 v_ArrVal_7145) (select (select (store .cse2 .cse1 v_ArrVal_7144) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7146))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7142 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7143 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7145 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7147 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_7142))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_7144))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_7143) .cse4 v_ArrVal_7145) .cse5 v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_7147) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-28 02:23:26,392 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7142 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7143 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7238 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7239 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7145 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_7239))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_7142))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_7238) .cse1 v_ArrVal_7143) .cse2 v_ArrVal_7145) (select (select (store .cse3 .cse2 v_ArrVal_7144) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_7146))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7142 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7143 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7238 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7239 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7145 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7147 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_7239))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_7142))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_7144))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_7238) .cse6 v_ArrVal_7143) .cse7 v_ArrVal_7145) .cse8 v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_7147) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-11-28 02:23:26,431 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:23:26,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318214797] [2024-11-28 02:23:26,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318214797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:26,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1602026557] [2024-11-28 02:23:26,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:26,431 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 02:23:26,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 02:23:26,433 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 02:23:26,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-28 02:23:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:43,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-28 02:23:43,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:43,463 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 02:23:46,198 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:23:46,198 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 02:23:46,295 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 02:23:46,446 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 02:23:46,598 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 02:23:47,396 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 02:23:47,448 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 02:23:57,335 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:23:57,335 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 02:23:57,430 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 02:23:58,348 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:23:58,349 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 02:23:58,444 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 02:23:59,183 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:23:59,184 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 02:23:59,283 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 02:24:00,058 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:24:00,058 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 02:24:00,159 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 02:24:00,506 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 02:24:00,608 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 02:24:00,609 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 02:24:00,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:01,087 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7726 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7725 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7726) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7725) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_7726 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7726) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv20 32)) (bvadd .cse1 (_ bv24 32))))))) is different from false [2024-11-28 02:24:01,262 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7726 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7726) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7726 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7725 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7726) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_7725) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 02:24:01,549 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7726 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7725 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7723))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7724) .cse0 v_ArrVal_7726) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7725) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7726 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7724) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7723) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7726) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv20 32)) (bvadd .cse3 (_ bv24 32))))))) is different from false [2024-11-28 02:24:01,740 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7726 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7725 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7723))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7724) .cse1 v_ArrVal_7726) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7725) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7726 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7724) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7723) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7726) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse4) (bvadd (_ bv24 32) .cse4))))))) is different from false [2024-11-28 02:24:02,061 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7726 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7722 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7721 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_7721))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_7722) .cse1 v_ArrVal_7724) (select (select (store .cse2 .cse1 v_ArrVal_7723) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7726))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7726 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7725 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7722 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7721 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_7721))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_7723))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_7722) .cse4 v_ArrVal_7724) .cse5 v_ArrVal_7726) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_7725) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-28 02:24:02,275 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_7726 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7722 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7721 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_7721))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7722) .cse2 v_ArrVal_7724) (select (select (store .cse3 .cse2 v_ArrVal_7723) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_7726))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7726 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7725 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7722 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7721 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_7721))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_7723))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7722) .cse5 v_ArrVal_7724) .cse6 v_ArrVal_7726) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_7725) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))) is different from false [2024-11-28 02:24:08,092 WARN L286 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 356 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-28 02:24:13,243 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7818 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7817 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7726 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7722 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7721 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_7818))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_7721))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_7817) .cse1 v_ArrVal_7722) .cse2 v_ArrVal_7724) (select (select (store .cse3 .cse2 v_ArrVal_7723) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_7726))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_7818 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7817 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7726 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7725 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7722 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7721 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_7818))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_7721))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_7723))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_7817) .cse6 v_ArrVal_7722) .cse7 v_ArrVal_7724) .cse8 v_ArrVal_7726) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_7725) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-11-28 02:24:13,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1602026557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:13,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:24:13,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2024-11-28 02:24:13,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966887533] [2024-11-28 02:24:13,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:13,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:24:13,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:24:13,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:24:13,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=194, Unknown=24, NotChecked=468, Total=756 [2024-11-28 02:24:13,289 INFO L87 Difference]: Start difference. First operand 2205 states and 2824 transitions. Second operand has 12 states, 10 states have (on average 8.1) internal successors, (81), 12 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:26:40,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:40,293 INFO L93 Difference]: Finished difference Result 2204 states and 2821 transitions. [2024-11-28 02:26:40,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:26:40,295 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.1) internal successors, (81), 12 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2024-11-28 02:26:40,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:40,301 INFO L225 Difference]: With dead ends: 2204 [2024-11-28 02:26:40,301 INFO L226 Difference]: Without dead ends: 2204 [2024-11-28 02:26:40,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 239 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=122, Invalid=408, Unknown=24, NotChecked=636, Total=1190 [2024-11-28 02:26:40,302 INFO L435 NwaCegarLoop]: 724 mSDtfsCounter, 904 mSDsluCounter, 2682 mSDsCounter, 0 mSdLazyCounter, 5330 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 140.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 3406 SdHoareTripleChecker+Invalid, 5341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 143.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:40,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 3406 Invalid, 5341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 5330 Invalid, 0 Unknown, 0 Unchecked, 143.0s Time] [2024-11-28 02:26:40,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2024-11-28 02:26:40,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 2204. [2024-11-28 02:26:40,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 1714 states have (on average 1.6254375729288215) internal successors, (2786), 2184 states have internal predecessors, (2786), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2024-11-28 02:26:40,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 2821 transitions. [2024-11-28 02:26:40,332 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 2821 transitions. Word has length 122 [2024-11-28 02:26:40,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:40,332 INFO L471 AbstractCegarLoop]: Abstraction has 2204 states and 2821 transitions. [2024-11-28 02:26:40,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.1) internal successors, (81), 12 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:26:40,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 2821 transitions. [2024-11-28 02:26:40,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-28 02:26:40,334 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:40,334 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] [2024-11-28 02:26:40,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-28 02:26:40,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2024-11-28 02:26:40,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 02:26:40,735 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:26:40,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:40,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1282510236, now seen corresponding path program 1 times [2024-11-28 02:26:40,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:26:40,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51007091] [2024-11-28 02:26:40,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:40,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:40,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:40,741 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:26:40,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 02:26:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:41,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-28 02:26:41,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:26:44,301 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:26:44,301 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 02:26:44,624 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 02:26:49,909 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:26:49,909 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 02:26:50,822 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:26:50,822 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 02:26:51,815 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:26:51,815 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 02:26:52,842 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:26:52,842 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 02:26:54,730 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:26:54,730 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 02:26:54,985 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 02:26:56,070 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 02:26:56,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 02:26:56,137 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 02:26:56,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:26:58,647 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8272 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 02:26:58,979 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-28 02:26:58,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2024-11-28 02:26:59,071 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8272 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8271 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem36#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8271))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8272)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-28 02:26:59,194 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8272 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8271 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| .cse2 v_ArrVal_8271))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8272)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse2)))) is different from false [2024-11-28 02:26:59,372 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8272 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8271 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8270 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8270)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_8271))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8272)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3)))) is different from false [2024-11-28 02:26:59,496 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8272 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8271 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8270 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8270))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_8271))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8272)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3))))) is different from false [2024-11-28 02:26:59,681 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8272 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8271 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8270 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8269 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_8269))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8270)))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_8271))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8272)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-28 02:26:59,813 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8272 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8271 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8270 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8269 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8269))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8270)))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_8271))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8272)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-28 02:27:03,008 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8272 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8271 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8319 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8270 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8269 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_8319))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8269)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8270)))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_8271))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8272)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-28 02:27:03,034 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:27:03,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51007091] [2024-11-28 02:27:03,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51007091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:03,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2090006354] [2024-11-28 02:27:03,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:03,034 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 02:27:03,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 02:27:03,040 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 02:27:03,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-28 02:27:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:14,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-28 02:27:14,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:15,314 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 02:27:15,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-28 02:27:21,933 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-28 02:27:21,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-11-28 02:27:23,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:27:26,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2024-11-28 02:27:48,894 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:27:48,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-28 02:27:51,965 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:27:51,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-28 02:27:54,237 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:27:54,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-28 02:27:56,444 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:27:56,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-28 02:27:58,847 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:27:58,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-28 02:27:59,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2024-11-28 02:28:02,149 INFO L349 Elim1Store]: treesize reduction 82, result has 29.3 percent of original size [2024-11-28 02:28:02,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 52 [2024-11-28 02:28:02,350 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 02:28:02,350 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:28:03,374 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8775 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8775) |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 02:28:03,496 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8775 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8775) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 02:28:03,671 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8775 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8774 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8774))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8775)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:28:03,795 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8775 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8774 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8774))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8775)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:28:03,980 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8775 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8774 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8773 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8773))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8774)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8775)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:28:04,105 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8775 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8774 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8773 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8773))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8774)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8775)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:28:04,286 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8775 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8774 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8773 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8772 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_8772))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8773)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8774)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8775)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:28:04,412 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8775 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8774 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8773 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8772 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8772))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8773)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8774)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8775)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:28:08,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2090006354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:08,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:28:08,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2024-11-28 02:28:08,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728038993] [2024-11-28 02:28:08,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:28:08,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 02:28:08,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:28:08,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 02:28:08,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=744, Unknown=23, NotChecked=1136, Total=2070 [2024-11-28 02:28:08,854 INFO L87 Difference]: Start difference. First operand 2204 states and 2821 transitions. Second operand has 27 states, 24 states have (on average 6.833333333333333) internal successors, (164), 26 states have internal predecessors, (164), 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 02:30:13,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:13,275 INFO L93 Difference]: Finished difference Result 2871 states and 3315 transitions. [2024-11-28 02:30:13,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 02:30:13,276 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 6.833333333333333) internal successors, (164), 26 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 126 [2024-11-28 02:30:13,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:13,280 INFO L225 Difference]: With dead ends: 2871 [2024-11-28 02:30:13,280 INFO L226 Difference]: Without dead ends: 2871 [2024-11-28 02:30:13,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 237 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=279, Invalid=1481, Unknown=26, NotChecked=1520, Total=3306 [2024-11-28 02:30:13,281 INFO L435 NwaCegarLoop]: 627 mSDtfsCounter, 3457 mSDsluCounter, 3672 mSDsCounter, 0 mSdLazyCounter, 4380 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3471 SdHoareTripleChecker+Valid, 4299 SdHoareTripleChecker+Invalid, 4453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 4380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:13,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3471 Valid, 4299 Invalid, 4453 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 4380 Invalid, 0 Unknown, 0 Unchecked, 117.7s Time] [2024-11-28 02:30:13,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2024-11-28 02:30:13,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2203. [2024-11-28 02:30:13,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 1714 states have (on average 1.6236872812135357) internal successors, (2783), 2183 states have internal predecessors, (2783), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2024-11-28 02:30:13,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2818 transitions. [2024-11-28 02:30:13,314 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2818 transitions. Word has length 126 [2024-11-28 02:30:13,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:13,314 INFO L471 AbstractCegarLoop]: Abstraction has 2203 states and 2818 transitions. [2024-11-28 02:30:13,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 6.833333333333333) internal successors, (164), 26 states have internal predecessors, (164), 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 02:30:13,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2818 transitions. [2024-11-28 02:30:13,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-28 02:30:13,316 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:13,316 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] [2024-11-28 02:30:13,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 02:30:13,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2024-11-28 02:30:13,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 02:30:13,717 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-28 02:30:13,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:13,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1282510235, now seen corresponding path program 1 times [2024-11-28 02:30:13,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:30:13,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891101300] [2024-11-28 02:30:13,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:13,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:13,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:13,720 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:13,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510758c4-64cd-4cc4-9a0a-5aa7f3c54178/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 02:30:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:14,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 123 conjuncts are in the unsatisfiable core [2024-11-28 02:30:14,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:14,708 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 02:30:17,433 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 02:30:17,737 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:30:17,738 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 02:30:18,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 02:30:18,378 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 02:30:19,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 02:30:19,918 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 02:30:34,518 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:30:34,518 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 75 treesize of output 68 [2024-11-28 02:30:34,632 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 02:30:37,204 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:30:37,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 68 [2024-11-28 02:30:37,314 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 02:30:39,272 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:30:39,272 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 75 treesize of output 68 [2024-11-28 02:30:39,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:30:41,395 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:30:41,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 68 [2024-11-28 02:30:41,508 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 02:30:43,582 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:30:43,582 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 75 treesize of output 68 [2024-11-28 02:30:43,807 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 02:30:44,318 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 44 treesize of output 20 [2024-11-28 02:30:44,487 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 02:30:45,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:30:45,800 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2024-11-28 02:30:45,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 21 [2024-11-28 02:30:46,106 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:30:46,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 02:30:46,861 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 02:30:46,862 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:57,622 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (or (forall ((v_ArrVal_9328 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_9328) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((|v_ULTIMATE.start_main_#t~malloc39#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc39#1.base_8|))))) (forall ((|v_ULTIMATE.start_main_#t~malloc39#1.base_8| (_ BitVec 32)) (v_ArrVal_9328 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9327 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc39#1.base_8|))) (forall ((v_ArrVal_9329 (_ BitVec 32))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_9328) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv4 32)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc39#1.base_8| v_ArrVal_9329) (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_9327) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-28 02:30:58,310 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (or (forall ((v_ArrVal_9328 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9326 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9325 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9326) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9325) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9328) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|v_ULTIMATE.start_main_#t~malloc39#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc39#1.base_8|))))) (forall ((|v_ULTIMATE.start_main_#t~malloc39#1.base_8| (_ BitVec 32)) (v_ArrVal_9328 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9326 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9325 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc39#1.base_8|))) (forall ((v_ArrVal_9329 (_ BitVec 32))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9325))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9326) .cse2 v_ArrVal_9328) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc39#1.base_8| v_ArrVal_9329) (select (select (store .cse3 .cse2 v_ArrVal_9327) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))))) is different from false [2024-11-28 02:30:58,768 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((|v_ULTIMATE.start_main_#t~malloc39#1.base_8| (_ BitVec 32)) (v_ArrVal_9328 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9326 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9325 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc39#1.base_8|))) (forall ((v_ArrVal_9329 (_ BitVec 32))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_9325))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_9326) .cse1 v_ArrVal_9328) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc39#1.base_8| v_ArrVal_9329) (select (select (store .cse3 .cse1 v_ArrVal_9327) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (or (forall ((|v_ULTIMATE.start_main_#t~malloc39#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc39#1.base_8|)))) (forall ((v_ArrVal_9328 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9326 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9325 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_9326) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_9325) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9328) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule .cse4 (bvadd (_ bv4 32) .cse4)))))))) is different from false [2024-11-28 02:30:59,451 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_main_#t~malloc39#1.base_8| (_ BitVec 32)) (v_ArrVal_9328 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9326 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9323 (Array (_ BitVec 32) (_ BitVec 32)))) (or (forall ((v_ArrVal_9329 (_ BitVec 32))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_9324))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_9325))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_9323) .cse0 v_ArrVal_9326) .cse1 v_ArrVal_9328) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc39#1.base_8| v_ArrVal_9329) (select (select (store .cse3 .cse1 v_ArrVal_9327) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc39#1.base_8|))))) (or (forall ((v_ArrVal_9328 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9326 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9323 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_9324))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_9323) .cse6 v_ArrVal_9326) (select (select (store .cse7 .cse6 v_ArrVal_9325) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9328))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule .cse5 (bvadd (_ bv4 32) .cse5)))) (forall ((|v_ULTIMATE.start_main_#t~malloc39#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc39#1.base_8|))))))) is different from false [2024-11-28 02:30:59,839 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (or (forall ((|v_ULTIMATE.start_main_#t~malloc39#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc39#1.base_8|)))) (forall ((v_ArrVal_9328 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9326 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9323 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_9324))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_9323) .cse2 v_ArrVal_9326) (select (select (store .cse3 .cse2 v_ArrVal_9325) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_9328))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) (forall ((|v_ULTIMATE.start_main_#t~malloc39#1.base_8| (_ BitVec 32)) (v_ArrVal_9328 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9326 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9323 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc39#1.base_8|))) (forall ((v_ArrVal_9329 (_ BitVec 32))) (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_9324))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_9325))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv4 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_9323) .cse5 v_ArrVal_9326) .cse6 v_ArrVal_9328) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc39#1.base_8| v_ArrVal_9329) (select (select (store .cse7 .cse6 v_ArrVal_9327) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))))) is different from false [2024-11-28 02:31:00,705 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (or (forall ((|v_ULTIMATE.start_main_#t~malloc39#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc39#1.base_8|)))) (forall ((v_ArrVal_9321 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9328 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9326 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9323 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9322 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_9321))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_9324))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_9322) .cse1 v_ArrVal_9323) .cse2 v_ArrVal_9326) (select (select (store .cse3 .cse2 v_ArrVal_9325) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_9328))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) (forall ((v_ArrVal_9321 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc39#1.base_8| (_ BitVec 32)) (v_ArrVal_9328 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9326 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9323 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9322 (Array (_ BitVec 32) (_ BitVec 32)))) (or (forall ((v_ArrVal_9329 (_ BitVec 32))) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_9321))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_9324))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_9325))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv4 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_9322) .cse6 v_ArrVal_9323) .cse7 v_ArrVal_9326) .cse8 v_ArrVal_9328) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc39#1.base_8| v_ArrVal_9329) (select (select (store .cse9 .cse8 v_ArrVal_9327) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc39#1.base_8|))))))) is different from false [2024-11-28 02:31:01,156 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_9321 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc39#1.base_8| (_ BitVec 32)) (v_ArrVal_9328 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9326 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9323 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9322 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc39#1.base_8|))) (forall ((v_ArrVal_9329 (_ BitVec 32))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_9321))) (let ((.cse1 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse6 (store .cse7 .cse1 v_ArrVal_9324))) (let ((.cse2 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse5 (store .cse6 .cse2 v_ArrVal_9325))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv4 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_9322) .cse1 v_ArrVal_9323) .cse2 v_ArrVal_9326) .cse3 v_ArrVal_9328) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc39#1.base_8| v_ArrVal_9329) (select (select (store .cse5 .cse3 v_ArrVal_9327) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) (or (forall ((v_ArrVal_9321 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9328 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9326 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9323 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9322 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (select (select (let ((.cse12 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_9321))) (let ((.cse9 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse11 (store .cse12 .cse9 v_ArrVal_9324))) (let ((.cse10 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_9322) .cse9 v_ArrVal_9323) .cse10 v_ArrVal_9326) (select (select (store .cse11 .cse10 v_ArrVal_9325) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_9328))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule .cse8 (bvadd (_ bv4 32) .cse8)))) (forall ((|v_ULTIMATE.start_main_#t~malloc39#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc39#1.base_8|)))))))) is different from false [2024-11-28 02:31:07,871 WARN L286 SmtUtils]: Spent 6.36s on a formula simplification that was a NOOP. DAG size: 362 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)