./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:01:27,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:01:27,631 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-24 01:01:27,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:01:27,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:01:27,660 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:01:27,661 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:01:27,661 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:01:27,661 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:01:27,661 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:01:27,662 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:01:27,662 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:01:27,662 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:01:27,662 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:01:27,662 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:01:27,662 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:01:27,663 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:01:27,663 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:01:27,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:01:27,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:01:27,663 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-24 01:01:27,663 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-24 01:01:27,663 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-24 01:01:27,663 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:01:27,663 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 01:01:27,664 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:01:27,664 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:01:27,664 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:01:27,664 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:01:27,664 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:01:27,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:01:27,664 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:01:27,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:01:27,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:01:27,665 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:01:27,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:01:27,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:01:27,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:01:27,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:01:27,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:01:27,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:01:27,665 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:01:27,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:01:27,666 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:01:27,666 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:01:27,666 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:01:27,666 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:01:27,666 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_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2024-11-24 01:01:27,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:01:27,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:01:27,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:01:27,985 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:01:27,985 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:01:27,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2024-11-24 01:01:30,919 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/data/c80c5223b/e1dfa5bebe36490d9fc7c1c9f408b506/FLAG5ef6d3843 [2024-11-24 01:01:31,366 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:01:31,370 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2024-11-24 01:01:31,395 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/data/c80c5223b/e1dfa5bebe36490d9fc7c1c9f408b506/FLAG5ef6d3843 [2024-11-24 01:01:31,419 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/data/c80c5223b/e1dfa5bebe36490d9fc7c1c9f408b506 [2024-11-24 01:01:31,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:01:31,423 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:01:31,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:01:31,426 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:01:31,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:01:31,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:01:31" (1/1) ... [2024-11-24 01:01:31,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f038130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:31, skipping insertion in model container [2024-11-24 01:01:31,436 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:01:31" (1/1) ... [2024-11-24 01:01:31,505 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:01:32,009 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:32,065 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:32,073 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:32,081 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:32,094 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:32,126 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:32,126 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:32,132 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:32,134 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:32,135 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:32,138 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:32,139 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:32,140 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:32,141 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:32,145 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:32,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:01:32,163 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) [2024-11-24 01:01:32,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@13602558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:32, skipping insertion in model container [2024-11-24 01:01:32,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:01:32,164 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-24 01:01:32,169 INFO L158 Benchmark]: Toolchain (without parser) took 742.12ms. Allocated memory is still 117.4MB. Free memory was 91.1MB in the beginning and 71.3MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 01:01:32,169 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 167.8MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:01:32,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 738.97ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 71.3MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 01:01:32,171 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 103.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 738.97ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 71.3MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 831]: 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_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:01:34,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:01:34,789 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-24 01:01:34,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:01:34,799 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:01:34,840 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:01:34,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:01:34,842 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:01:34,843 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:01:34,843 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:01:34,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:01:34,844 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:01:34,845 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:01:34,845 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:01:34,845 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:01:34,846 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:01:34,846 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:01:34,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:01:34,846 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:01:34,846 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:01:34,846 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-24 01:01:34,846 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-24 01:01:34,846 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-24 01:01:34,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:01:34,846 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 01:01:34,846 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-24 01:01:34,846 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-24 01:01:34,847 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:01:34,847 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:01:34,847 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:01:34,847 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:01:34,848 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:01:34,848 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:01:34,848 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:01:34,848 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:01:34,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:01:34,848 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:01:34,848 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:01:34,849 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:01:34,849 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:01:34,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:01:34,849 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:01:34,849 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:01:34,849 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-24 01:01:34,849 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-24 01:01:34,849 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:01:34,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:01:34,850 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:01:34,850 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:01:34,850 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_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2024-11-24 01:01:35,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:01:35,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:01:35,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:01:35,181 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:01:35,182 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:01:35,183 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2024-11-24 01:01:38,341 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/data/51a81bffa/eb9b4db4f09b45c38b0fe7b73c267ac0/FLAG9e4487577 [2024-11-24 01:01:38,825 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:01:38,828 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-2.i [2024-11-24 01:01:38,853 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/data/51a81bffa/eb9b4db4f09b45c38b0fe7b73c267ac0/FLAG9e4487577 [2024-11-24 01:01:38,876 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/data/51a81bffa/eb9b4db4f09b45c38b0fe7b73c267ac0 [2024-11-24 01:01:38,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:01:38,882 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:01:38,884 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:01:38,885 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:01:38,890 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:01:38,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:01:38" (1/1) ... [2024-11-24 01:01:38,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767159c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:38, skipping insertion in model container [2024-11-24 01:01:38,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:01:38" (1/1) ... [2024-11-24 01:01:38,955 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:01:39,465 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,509 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,522 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,527 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,539 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,575 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,576 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,579 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,579 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,582 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,585 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,586 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,588 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,589 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,594 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:01:39,619 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-24 01:01:39,634 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:01:39,705 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,754 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,761 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,765 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,779 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,848 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,848 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,851 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,851 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,853 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,856 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,857 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,858 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,859 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,863 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:01:39,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:01:39,872 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:01:40,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:01:40,075 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:01:40,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:40 WrapperNode [2024-11-24 01:01:40,076 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:01:40,077 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:01:40,078 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:01:40,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:01:40,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:40" (1/1) ... [2024-11-24 01:01:40,145 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:40" (1/1) ... [2024-11-24 01:01:40,215 INFO L138 Inliner]: procedures = 210, calls = 273, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1024 [2024-11-24 01:01:40,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:01:40,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:01:40,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:01:40,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:01:40,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:40" (1/1) ... [2024-11-24 01:01:40,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:40" (1/1) ... [2024-11-24 01:01:40,245 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:40" (1/1) ... [2024-11-24 01:01:40,407 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 34, 218]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2024-11-24 01:01:40,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:40" (1/1) ... [2024-11-24 01:01:40,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:40" (1/1) ... [2024-11-24 01:01:40,486 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:40" (1/1) ... [2024-11-24 01:01:40,491 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:40" (1/1) ... [2024-11-24 01:01:40,509 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:40" (1/1) ... [2024-11-24 01:01:40,522 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:40" (1/1) ... [2024-11-24 01:01:40,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:40" (1/1) ... [2024-11-24 01:01:40,550 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:01:40,551 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:01:40,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:01:40,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:01:40,552 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:40" (1/1) ... [2024-11-24 01:01:40,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:01:40,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:01:40,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:01:40,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:01:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-24 01:01:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-24 01:01:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-24 01:01:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-24 01:01:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-24 01:01:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-24 01:01:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-24 01:01:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-24 01:01:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-24 01:01:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-24 01:01:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-24 01:01:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-24 01:01:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 01:01:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 01:01:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 01:01:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 01:01:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-24 01:01:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-24 01:01:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-24 01:01:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 01:01:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-24 01:01:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-24 01:01:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-24 01:01:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:01:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:01:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 01:01:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 01:01:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 01:01:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:01:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:01:41,012 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:01:41,014 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:01:41,017 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 01:01:41,088 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 01:01:41,124 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 01:01:46,636 INFO L? ?]: Removed 1086 outVars from TransFormulas that were not future-live. [2024-11-24 01:01:46,636 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:01:46,685 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:01:46,685 INFO L312 CfgBuilder]: Removed 36 assume(true) statements. [2024-11-24 01:01:46,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:01:46 BoogieIcfgContainer [2024-11-24 01:01:46,686 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:01:46,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:01:46,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:01:46,700 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:01:46,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:01:38" (1/3) ... [2024-11-24 01:01:46,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6036fc86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:01:46, skipping insertion in model container [2024-11-24 01:01:46,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:01:40" (2/3) ... [2024-11-24 01:01:46,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6036fc86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:01:46, skipping insertion in model container [2024-11-24 01:01:46,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:01:46" (3/3) ... [2024-11-24 01:01:46,705 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test2-2.i [2024-11-24 01:01:46,723 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:01:46,725 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_nondet_test2-2.i that has 4 procedures, 1070 locations, 1 initial locations, 38 loop locations, and 525 error locations. [2024-11-24 01:01:46,809 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:01:46,827 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;@22a63110, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:01:46,828 INFO L334 AbstractCegarLoop]: Starting to check reachability of 525 error locations. [2024-11-24 01:01:46,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 1060 states, 533 states have (on average 2.2157598499061915) internal successors, (1181), 1055 states have internal predecessors, (1181), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:01:46,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-24 01:01:46,841 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:01:46,841 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-24 01:01:46,842 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr524ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:01:46,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:01:46,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1758461, now seen corresponding path program 1 times [2024-11-24 01:01:46,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:01:46,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932399029] [2024-11-24 01:01:46,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:01:46,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:01:46,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:01:46,866 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:01:46,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:01:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:01:47,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:01:47,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:01:47,159 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_46| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46| (_ bv0 1)) |c_#valid|))) is different from true [2024-11-24 01:01:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:01:47,164 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:01:47,165 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:01:47,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932399029] [2024-11-24 01:01:47,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932399029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:01:47,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:01:47,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:01:47,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947186116] [2024-11-24 01:01:47,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:01:47,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:01:47,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:01:47,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:01:47,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-24 01:01:47,210 INFO L87 Difference]: Start difference. First operand has 1060 states, 533 states have (on average 2.2157598499061915) internal successors, (1181), 1055 states have internal predecessors, (1181), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:01:50,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:01:50,479 INFO L93 Difference]: Finished difference Result 1449 states and 1550 transitions. [2024-11-24 01:01:50,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:01:50,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-24 01:01:50,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:01:50,499 INFO L225 Difference]: With dead ends: 1449 [2024-11-24 01:01:50,500 INFO L226 Difference]: Without dead ends: 1446 [2024-11-24 01:01:50,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-24 01:01:50,505 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 427 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 2290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1551 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:01:50,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 1483 Invalid, 2290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 739 Invalid, 0 Unknown, 1551 Unchecked, 3.1s Time] [2024-11-24 01:01:50,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2024-11-24 01:01:50,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1048. [2024-11-24 01:01:50,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 527 states have (on average 2.0853889943074004) internal successors, (1099), 1043 states have internal predecessors, (1099), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:01:50,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1105 transitions. [2024-11-24 01:01:50,618 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1105 transitions. Word has length 4 [2024-11-24 01:01:50,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:01:50,618 INFO L471 AbstractCegarLoop]: Abstraction has 1048 states and 1105 transitions. [2024-11-24 01:01:50,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:01:50,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1105 transitions. [2024-11-24 01:01:50,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-24 01:01:50,619 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:01:50,619 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-24 01:01:50,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:01:50,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:01:50,820 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:01:50,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:01:50,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1756837, now seen corresponding path program 1 times [2024-11-24 01:01:50,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:01:50,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1219110899] [2024-11-24 01:01:50,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:01:50,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:01:50,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:01:50,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:01:50,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:01:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:01:50,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:01:50,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:01:50,984 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 [2024-11-24 01:01:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:01:51,002 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:01:51,003 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:01:51,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219110899] [2024-11-24 01:01:51,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219110899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:01:51,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:01:51,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:01:51,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840125388] [2024-11-24 01:01:51,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:01:51,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:01:51,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:01:51,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:01:51,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:01:51,006 INFO L87 Difference]: Start difference. First operand 1048 states and 1105 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:01:53,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:01:53,571 INFO L93 Difference]: Finished difference Result 1224 states and 1291 transitions. [2024-11-24 01:01:53,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:01:53,571 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 [2024-11-24 01:01:53,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:01:53,578 INFO L225 Difference]: With dead ends: 1224 [2024-11-24 01:01:53,578 INFO L226 Difference]: Without dead ends: 1224 [2024-11-24 01:01:53,578 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 [2024-11-24 01:01:53,579 INFO L435 NwaCegarLoop]: 630 mSDtfsCounter, 969 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:01:53,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 777 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 01:01:53,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2024-11-24 01:01:53,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1045. [2024-11-24 01:01:53,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 535 states have (on average 2.0504672897196263) internal successors, (1097), 1040 states have internal predecessors, (1097), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:01:53,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1103 transitions. [2024-11-24 01:01:53,621 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1103 transitions. Word has length 4 [2024-11-24 01:01:53,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:01:53,622 INFO L471 AbstractCegarLoop]: Abstraction has 1045 states and 1103 transitions. [2024-11-24 01:01:53,622 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) [2024-11-24 01:01:53,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1103 transitions. [2024-11-24 01:01:53,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-24 01:01:53,622 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:01:53,622 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-24 01:01:53,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:01:53,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:01:53,826 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:01:53,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:01:53,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1756838, now seen corresponding path program 1 times [2024-11-24 01:01:53,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:01:53,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890885690] [2024-11-24 01:01:53,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:01:53,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:01:53,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:01:53,834 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:01:53,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:01:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:01:54,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:01:54,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:01:54,042 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 [2024-11-24 01:01:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:01:54,082 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:01:54,083 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:01:54,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890885690] [2024-11-24 01:01:54,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890885690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:01:54,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:01:54,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:01:54,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835540791] [2024-11-24 01:01:54,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:01:54,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:01:54,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:01:54,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:01:54,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:01:54,085 INFO L87 Difference]: Start difference. First operand 1045 states and 1103 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:01:57,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:01:57,783 INFO L93 Difference]: Finished difference Result 1457 states and 1547 transitions. [2024-11-24 01:01:57,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:01:57,784 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 [2024-11-24 01:01:57,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:01:57,790 INFO L225 Difference]: With dead ends: 1457 [2024-11-24 01:01:57,791 INFO L226 Difference]: Without dead ends: 1457 [2024-11-24 01:01:57,791 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 [2024-11-24 01:01:57,792 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 444 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:01:57,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 1483 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-24 01:01:57,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2024-11-24 01:01:57,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1170. [2024-11-24 01:01:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 661 states have (on average 2.006051437216339) internal successors, (1326), 1165 states have internal predecessors, (1326), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:01:57,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1332 transitions. [2024-11-24 01:01:57,828 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1332 transitions. Word has length 4 [2024-11-24 01:01:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:01:57,829 INFO L471 AbstractCegarLoop]: Abstraction has 1170 states and 1332 transitions. [2024-11-24 01:01:57,829 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) [2024-11-24 01:01:57,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1332 transitions. [2024-11-24 01:01:57,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-24 01:01:57,830 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:01:57,830 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:01:57,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 01:01:58,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:01:58,031 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:01:58,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:01:58,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1599592659, now seen corresponding path program 1 times [2024-11-24 01:01:58,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:01:58,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698825601] [2024-11-24 01:01:58,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:01:58,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:01:58,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:01:58,037 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:01:58,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:01:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:01:58,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:01:58,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:01:58,259 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 [2024-11-24 01:01:58,395 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-24 01:01:58,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-24 01:01:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:01:58,521 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:01:58,521 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:01:58,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698825601] [2024-11-24 01:01:58,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698825601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:01:58,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:01:58,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:01:58,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610545928] [2024-11-24 01:01:58,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:01:58,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:01:58,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:01:58,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:01:58,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:01:58,527 INFO L87 Difference]: Start difference. First operand 1170 states and 1332 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:05,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:05,080 INFO L93 Difference]: Finished difference Result 2155 states and 2293 transitions. [2024-11-24 01:02:05,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:02:05,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-24 01:02:05,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:05,090 INFO L225 Difference]: With dead ends: 2155 [2024-11-24 01:02:05,091 INFO L226 Difference]: Without dead ends: 2155 [2024-11-24 01:02:05,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:02:05,092 INFO L435 NwaCegarLoop]: 1024 mSDtfsCounter, 1182 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:05,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 2183 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-24 01:02:05,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2024-11-24 01:02:05,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 1319. [2024-11-24 01:02:05,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 810 states have (on average 1.991358024691358) internal successors, (1613), 1314 states have internal predecessors, (1613), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:05,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1619 transitions. [2024-11-24 01:02:05,136 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1619 transitions. Word has length 9 [2024-11-24 01:02:05,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:05,136 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1619 transitions. [2024-11-24 01:02:05,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:05,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1619 transitions. [2024-11-24 01:02:05,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-24 01:02:05,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:05,137 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:05,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:02:05,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:05,341 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:05,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:05,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1952235122, now seen corresponding path program 1 times [2024-11-24 01:02:05,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:05,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475444203] [2024-11-24 01:02:05,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:05,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:05,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:05,345 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:05,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:02:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:05,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:02:05,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:05,531 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 [2024-11-24 01:02:05,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:05,554 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:02:05,554 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:05,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475444203] [2024-11-24 01:02:05,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475444203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:05,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:05,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:02:05,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446901537] [2024-11-24 01:02:05,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:05,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:02:05,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:05,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:02:05,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:02:05,557 INFO L87 Difference]: Start difference. First operand 1319 states and 1619 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:07,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:07,920 INFO L93 Difference]: Finished difference Result 1485 states and 1795 transitions. [2024-11-24 01:02:07,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:02:07,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-24 01:02:07,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:07,927 INFO L225 Difference]: With dead ends: 1485 [2024-11-24 01:02:07,927 INFO L226 Difference]: Without dead ends: 1485 [2024-11-24 01:02:07,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:02:07,928 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 761 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:07,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 1130 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-24 01:02:07,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2024-11-24 01:02:07,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1272. [2024-11-24 01:02:07,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 810 states have (on average 1.9197530864197532) internal successors, (1555), 1267 states have internal predecessors, (1555), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:07,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1561 transitions. [2024-11-24 01:02:07,965 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1561 transitions. Word has length 10 [2024-11-24 01:02:07,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:07,965 INFO L471 AbstractCegarLoop]: Abstraction has 1272 states and 1561 transitions. [2024-11-24 01:02:07,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:07,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1561 transitions. [2024-11-24 01:02:07,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-24 01:02:07,966 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:07,966 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:07,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 01:02:08,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:08,167 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:08,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:08,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1952235123, now seen corresponding path program 1 times [2024-11-24 01:02:08,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:08,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286175525] [2024-11-24 01:02:08,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:08,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:08,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:08,173 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:08,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:02:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:08,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:02:08,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:08,371 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 [2024-11-24 01:02:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:08,423 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:02:08,424 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:08,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286175525] [2024-11-24 01:02:08,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286175525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:08,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:08,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:02:08,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177018073] [2024-11-24 01:02:08,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:08,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:02:08,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:08,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:02:08,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:02:08,427 INFO L87 Difference]: Start difference. First operand 1272 states and 1561 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:11,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:11,794 INFO L93 Difference]: Finished difference Result 1696 states and 2102 transitions. [2024-11-24 01:02:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:02:11,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-24 01:02:11,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:11,800 INFO L225 Difference]: With dead ends: 1696 [2024-11-24 01:02:11,801 INFO L226 Difference]: Without dead ends: 1696 [2024-11-24 01:02:11,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:02:11,803 INFO L435 NwaCegarLoop]: 1053 mSDtfsCounter, 512 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:11,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1474 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-24 01:02:11,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2024-11-24 01:02:11,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1299. [2024-11-24 01:02:11,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 847 states have (on average 1.8984651711924438) internal successors, (1608), 1294 states have internal predecessors, (1608), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:11,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1614 transitions. [2024-11-24 01:02:11,843 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1614 transitions. Word has length 10 [2024-11-24 01:02:11,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:11,844 INFO L471 AbstractCegarLoop]: Abstraction has 1299 states and 1614 transitions. [2024-11-24 01:02:11,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:11,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1614 transitions. [2024-11-24 01:02:11,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-24 01:02:11,847 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:11,847 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:11,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 01:02:12,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:12,047 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr419REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:12,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:12,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2110860753, now seen corresponding path program 1 times [2024-11-24 01:02:12,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:12,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942578043] [2024-11-24 01:02:12,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:12,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:12,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:12,053 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:12,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:02:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:12,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:02:12,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:12,344 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:02:12,344 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:12,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942578043] [2024-11-24 01:02:12,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942578043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:12,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:12,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:02:12,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999578436] [2024-11-24 01:02:12,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:12,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:02:12,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:12,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:02:12,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:02:12,346 INFO L87 Difference]: Start difference. First operand 1299 states and 1614 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2024-11-24 01:02:12,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:12,778 INFO L93 Difference]: Finished difference Result 1552 states and 1762 transitions. [2024-11-24 01:02:12,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:02:12,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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 [2024-11-24 01:02:12,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:12,784 INFO L225 Difference]: With dead ends: 1552 [2024-11-24 01:02:12,784 INFO L226 Difference]: Without dead ends: 1552 [2024-11-24 01:02:12,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:02:12,785 INFO L435 NwaCegarLoop]: 1105 mSDtfsCounter, 469 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:12,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 2056 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:02:12,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2024-11-24 01:02:12,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1284. [2024-11-24 01:02:12,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 832 states have (on average 1.8689903846153846) internal successors, (1555), 1279 states have internal predecessors, (1555), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:12,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1561 transitions. [2024-11-24 01:02:12,815 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1561 transitions. Word has length 12 [2024-11-24 01:02:12,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:12,815 INFO L471 AbstractCegarLoop]: Abstraction has 1284 states and 1561 transitions. [2024-11-24 01:02:12,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2024-11-24 01:02:12,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1561 transitions. [2024-11-24 01:02:12,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-24 01:02:12,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:12,816 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:12,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:02:13,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:13,021 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:13,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:13,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1789694881, now seen corresponding path program 1 times [2024-11-24 01:02:13,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:13,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033820416] [2024-11-24 01:02:13,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:13,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:13,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:13,024 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:13,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:02:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:13,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:02:13,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:13,198 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 [2024-11-24 01:02:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:13,292 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:02:13,293 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:13,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033820416] [2024-11-24 01:02:13,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033820416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:13,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:13,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:02:13,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833159899] [2024-11-24 01:02:13,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:13,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:02:13,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:13,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:02:13,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:02:13,296 INFO L87 Difference]: Start difference. First operand 1284 states and 1561 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:16,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:16,494 INFO L93 Difference]: Finished difference Result 1452 states and 1692 transitions. [2024-11-24 01:02:16,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:02:16,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2024-11-24 01:02:16,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:16,498 INFO L225 Difference]: With dead ends: 1452 [2024-11-24 01:02:16,498 INFO L226 Difference]: Without dead ends: 1452 [2024-11-24 01:02:16,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:02:16,499 INFO L435 NwaCegarLoop]: 588 mSDtfsCounter, 967 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:16,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 1221 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-24 01:02:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2024-11-24 01:02:16,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 1261. [2024-11-24 01:02:16,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 832 states have (on average 1.7860576923076923) internal successors, (1486), 1256 states have internal predecessors, (1486), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:16,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1492 transitions. [2024-11-24 01:02:16,527 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1492 transitions. Word has length 14 [2024-11-24 01:02:16,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:16,527 INFO L471 AbstractCegarLoop]: Abstraction has 1261 states and 1492 transitions. [2024-11-24 01:02:16,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:16,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1492 transitions. [2024-11-24 01:02:16,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-24 01:02:16,528 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:16,528 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:16,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 01:02:16,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:16,729 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:16,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:16,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1789694880, now seen corresponding path program 1 times [2024-11-24 01:02:16,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:16,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958941628] [2024-11-24 01:02:16,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:16,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:16,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:16,732 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:16,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:02:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:16,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:02:16,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:16,911 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 [2024-11-24 01:02:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:17,048 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:02:17,048 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:17,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958941628] [2024-11-24 01:02:17,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958941628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:17,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:17,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:02:17,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040576321] [2024-11-24 01:02:17,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:17,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:02:17,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:17,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:02:17,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:02:17,051 INFO L87 Difference]: Start difference. First operand 1261 states and 1492 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:21,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:21,219 INFO L93 Difference]: Finished difference Result 1454 states and 1663 transitions. [2024-11-24 01:02:21,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:02:21,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2024-11-24 01:02:21,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:21,223 INFO L225 Difference]: With dead ends: 1454 [2024-11-24 01:02:21,223 INFO L226 Difference]: Without dead ends: 1454 [2024-11-24 01:02:21,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:02:21,224 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 337 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:21,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1913 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-24 01:02:21,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2024-11-24 01:02:21,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1242. [2024-11-24 01:02:21,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 813 states have (on average 1.7761377613776137) internal successors, (1444), 1237 states have internal predecessors, (1444), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:21,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1450 transitions. [2024-11-24 01:02:21,253 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1450 transitions. Word has length 14 [2024-11-24 01:02:21,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:21,253 INFO L471 AbstractCegarLoop]: Abstraction has 1242 states and 1450 transitions. [2024-11-24 01:02:21,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:21,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1450 transitions. [2024-11-24 01:02:21,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-24 01:02:21,254 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:21,254 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:21,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 01:02:21,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:21,459 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:21,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:21,459 INFO L85 PathProgramCache]: Analyzing trace with hash -2029365873, now seen corresponding path program 1 times [2024-11-24 01:02:21,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:21,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034881010] [2024-11-24 01:02:21,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:21,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:21,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:21,463 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:21,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:02:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:21,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:02:21,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:21,801 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:02:21,801 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:21,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034881010] [2024-11-24 01:02:21,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034881010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:21,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:21,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:02:21,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592017319] [2024-11-24 01:02:21,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:21,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:02:21,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:21,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:02:21,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:02:21,805 INFO L87 Difference]: Start difference. First operand 1242 states and 1450 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:22,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:22,671 INFO L93 Difference]: Finished difference Result 1489 states and 1653 transitions. [2024-11-24 01:02:22,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:02:22,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-24 01:02:22,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:22,675 INFO L225 Difference]: With dead ends: 1489 [2024-11-24 01:02:22,675 INFO L226 Difference]: Without dead ends: 1489 [2024-11-24 01:02:22,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:02:22,676 INFO L435 NwaCegarLoop]: 1123 mSDtfsCounter, 449 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:22,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 3069 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:02:22,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2024-11-24 01:02:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1244. [2024-11-24 01:02:22,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 815 states have (on average 1.7742331288343558) internal successors, (1446), 1239 states have internal predecessors, (1446), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1452 transitions. [2024-11-24 01:02:22,701 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1452 transitions. Word has length 15 [2024-11-24 01:02:22,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:22,702 INFO L471 AbstractCegarLoop]: Abstraction has 1244 states and 1452 transitions. [2024-11-24 01:02:22,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:22,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1452 transitions. [2024-11-24 01:02:22,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-24 01:02:22,704 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:22,704 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:22,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 01:02:22,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:22,906 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr524ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:22,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:22,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2029355055, now seen corresponding path program 1 times [2024-11-24 01:02:22,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:22,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288088951] [2024-11-24 01:02:22,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:22,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:22,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:22,912 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:22,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:02:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:23,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:02:23,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:23,271 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_47| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47|)))) is different from true [2024-11-24 01:02:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:23,272 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:02:23,273 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:23,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288088951] [2024-11-24 01:02:23,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288088951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:23,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:23,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:02:23,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392876335] [2024-11-24 01:02:23,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:23,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:02:23,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:23,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:02:23,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-24 01:02:23,275 INFO L87 Difference]: Start difference. First operand 1244 states and 1452 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:25,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:25,245 INFO L93 Difference]: Finished difference Result 1261 states and 1459 transitions. [2024-11-24 01:02:25,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:02:25,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-24 01:02:25,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:25,248 INFO L225 Difference]: With dead ends: 1261 [2024-11-24 01:02:25,248 INFO L226 Difference]: Without dead ends: 1255 [2024-11-24 01:02:25,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-24 01:02:25,249 INFO L435 NwaCegarLoop]: 996 mSDtfsCounter, 81 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1104 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:25,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1556 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 467 Invalid, 0 Unknown, 1104 Unchecked, 1.9s Time] [2024-11-24 01:02:25,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2024-11-24 01:02:25,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1244. [2024-11-24 01:02:25,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 815 states have (on average 1.7730061349693251) internal successors, (1445), 1239 states have internal predecessors, (1445), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:25,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1451 transitions. [2024-11-24 01:02:25,274 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1451 transitions. Word has length 15 [2024-11-24 01:02:25,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:25,275 INFO L471 AbstractCegarLoop]: Abstraction has 1244 states and 1451 transitions. [2024-11-24 01:02:25,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:25,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1451 transitions. [2024-11-24 01:02:25,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-24 01:02:25,277 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:25,277 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:25,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 01:02:25,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:25,478 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr355REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:25,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:25,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1909716041, now seen corresponding path program 1 times [2024-11-24 01:02:25,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:25,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010261540] [2024-11-24 01:02:25,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:25,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:25,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:25,482 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:25,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 01:02:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:25,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:02:25,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:25,700 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:02:25,700 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:25,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010261540] [2024-11-24 01:02:25,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010261540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:25,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:25,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:02:25,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010393624] [2024-11-24 01:02:25,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:25,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:02:25,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:25,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:02:25,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:02:25,701 INFO L87 Difference]: Start difference. First operand 1244 states and 1451 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:25,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:25,806 INFO L93 Difference]: Finished difference Result 1166 states and 1330 transitions. [2024-11-24 01:02:25,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:02:25,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-24 01:02:25,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:25,811 INFO L225 Difference]: With dead ends: 1166 [2024-11-24 01:02:25,811 INFO L226 Difference]: Without dead ends: 1166 [2024-11-24 01:02:25,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:02:25,812 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 45 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:25,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2773 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:02:25,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2024-11-24 01:02:25,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2024-11-24 01:02:25,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 756 states have (on average 1.7513227513227514) internal successors, (1324), 1161 states have internal predecessors, (1324), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:25,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1330 transitions. [2024-11-24 01:02:25,836 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1330 transitions. Word has length 16 [2024-11-24 01:02:25,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:25,836 INFO L471 AbstractCegarLoop]: Abstraction has 1166 states and 1330 transitions. [2024-11-24 01:02:25,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:25,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1330 transitions. [2024-11-24 01:02:25,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-24 01:02:25,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:25,838 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] [2024-11-24 01:02:25,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-24 01:02:26,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:26,041 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:26,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:26,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2113969666, now seen corresponding path program 1 times [2024-11-24 01:02:26,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:26,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336976829] [2024-11-24 01:02:26,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:26,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:26,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:26,045 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:26,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 01:02:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:26,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:02:26,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:26,286 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 5 [2024-11-24 01:02:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:26,435 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:02:26,435 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:26,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336976829] [2024-11-24 01:02:26,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336976829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:26,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:26,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:02:26,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724155977] [2024-11-24 01:02:26,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:26,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:02:26,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:26,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:02:26,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:02:26,437 INFO L87 Difference]: Start difference. First operand 1166 states and 1330 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:30,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:30,068 INFO L93 Difference]: Finished difference Result 1560 states and 1786 transitions. [2024-11-24 01:02:30,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:02:30,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-24 01:02:30,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:30,073 INFO L225 Difference]: With dead ends: 1560 [2024-11-24 01:02:30,073 INFO L226 Difference]: Without dead ends: 1560 [2024-11-24 01:02:30,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:02:30,074 INFO L435 NwaCegarLoop]: 992 mSDtfsCounter, 597 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:30,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 1982 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-24 01:02:30,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2024-11-24 01:02:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1282. [2024-11-24 01:02:30,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 872 states have (on average 1.731651376146789) internal successors, (1510), 1277 states have internal predecessors, (1510), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1516 transitions. [2024-11-24 01:02:30,093 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1516 transitions. Word has length 20 [2024-11-24 01:02:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:30,093 INFO L471 AbstractCegarLoop]: Abstraction has 1282 states and 1516 transitions. [2024-11-24 01:02:30,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:30,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1516 transitions. [2024-11-24 01:02:30,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-24 01:02:30,096 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:30,096 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] [2024-11-24 01:02:30,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 01:02:30,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:30,296 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:30,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:30,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2113969665, now seen corresponding path program 1 times [2024-11-24 01:02:30,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:30,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083310324] [2024-11-24 01:02:30,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:30,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:30,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:30,300 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:30,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 01:02:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:30,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:02:30,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:30,506 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:02:30,506 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:30,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083310324] [2024-11-24 01:02:30,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083310324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:30,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:30,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:02:30,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816566177] [2024-11-24 01:02:30,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:30,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:02:30,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:30,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:02:30,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:02:30,507 INFO L87 Difference]: Start difference. First operand 1282 states and 1516 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:32,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:32,798 INFO L93 Difference]: Finished difference Result 1270 states and 1434 transitions. [2024-11-24 01:02:32,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:02:32,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-24 01:02:32,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:32,802 INFO L225 Difference]: With dead ends: 1270 [2024-11-24 01:02:32,803 INFO L226 Difference]: Without dead ends: 1270 [2024-11-24 01:02:32,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:02:32,803 INFO L435 NwaCegarLoop]: 645 mSDtfsCounter, 728 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:32,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1276 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-24 01:02:32,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2024-11-24 01:02:32,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1259. [2024-11-24 01:02:32,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 872 states have (on average 1.6261467889908257) internal successors, (1418), 1254 states have internal predecessors, (1418), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:32,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1424 transitions. [2024-11-24 01:02:32,821 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1424 transitions. Word has length 20 [2024-11-24 01:02:32,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:32,821 INFO L471 AbstractCegarLoop]: Abstraction has 1259 states and 1424 transitions. [2024-11-24 01:02:32,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:32,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1424 transitions. [2024-11-24 01:02:32,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-24 01:02:32,822 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:32,822 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:32,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-24 01:02:33,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:33,023 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:33,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:33,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1029891552, now seen corresponding path program 1 times [2024-11-24 01:02:33,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:33,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991440187] [2024-11-24 01:02:33,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:33,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:33,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:33,035 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:33,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 01:02:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:33,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:02:33,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:33,307 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 [2024-11-24 01:02:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:33,567 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:02:34,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:34,127 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:34,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991440187] [2024-11-24 01:02:34,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991440187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:02:34,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:02:34,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-24 01:02:34,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930563167] [2024-11-24 01:02:34,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:02:34,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:02:34,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:34,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:02:34,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:02:34,128 INFO L87 Difference]: Start difference. First operand 1259 states and 1424 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:42,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:42,668 INFO L93 Difference]: Finished difference Result 1899 states and 2190 transitions. [2024-11-24 01:02:42,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:02:42,669 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 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 39 [2024-11-24 01:02:42,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:42,673 INFO L225 Difference]: With dead ends: 1899 [2024-11-24 01:02:42,674 INFO L226 Difference]: Without dead ends: 1899 [2024-11-24 01:02:42,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:02:42,674 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 1922 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:42,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1923 Valid, 2721 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-24 01:02:42,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2024-11-24 01:02:42,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1425. [2024-11-24 01:02:42,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1038 states have (on average 1.5915221579961465) internal successors, (1652), 1420 states have internal predecessors, (1652), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:42,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1658 transitions. [2024-11-24 01:02:42,694 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1658 transitions. Word has length 39 [2024-11-24 01:02:42,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:42,694 INFO L471 AbstractCegarLoop]: Abstraction has 1425 states and 1658 transitions. [2024-11-24 01:02:42,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:42,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1658 transitions. [2024-11-24 01:02:42,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-24 01:02:42,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:42,696 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] [2024-11-24 01:02:42,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-24 01:02:42,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:42,896 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr414ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:42,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:42,897 INFO L85 PathProgramCache]: Analyzing trace with hash -797594166, now seen corresponding path program 1 times [2024-11-24 01:02:42,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:42,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [822237177] [2024-11-24 01:02:42,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:42,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:42,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:42,901 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:42,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 01:02:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:43,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:02:43,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:43,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:43,166 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:02:43,166 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:43,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822237177] [2024-11-24 01:02:43,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822237177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:43,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:43,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:02:43,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527545956] [2024-11-24 01:02:43,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:43,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:02:43,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:43,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:02:43,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:02:43,168 INFO L87 Difference]: Start difference. First operand 1425 states and 1658 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:43,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:43,233 INFO L93 Difference]: Finished difference Result 1407 states and 1628 transitions. [2024-11-24 01:02:43,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:02:43,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-11-24 01:02:43,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:43,237 INFO L225 Difference]: With dead ends: 1407 [2024-11-24 01:02:43,237 INFO L226 Difference]: Without dead ends: 1407 [2024-11-24 01:02:43,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:02:43,238 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 27 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:43,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2696 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:02:43,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2024-11-24 01:02:43,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1407. [2024-11-24 01:02:43,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1020 states have (on average 1.5901960784313725) internal successors, (1622), 1402 states have internal predecessors, (1622), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:43,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1628 transitions. [2024-11-24 01:02:43,256 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1628 transitions. Word has length 50 [2024-11-24 01:02:43,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:43,256 INFO L471 AbstractCegarLoop]: Abstraction has 1407 states and 1628 transitions. [2024-11-24 01:02:43,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:43,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1628 transitions. [2024-11-24 01:02:43,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 01:02:43,257 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:43,257 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] [2024-11-24 01:02:43,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-24 01:02:43,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:43,461 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:43,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:43,462 INFO L85 PathProgramCache]: Analyzing trace with hash 24010691, now seen corresponding path program 1 times [2024-11-24 01:02:43,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:43,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [890699488] [2024-11-24 01:02:43,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:43,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:43,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:43,464 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:43,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 01:02:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:43,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:02:43,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:43,779 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:02:43,779 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:43,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890699488] [2024-11-24 01:02:43,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890699488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:43,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:43,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:02:43,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890714450] [2024-11-24 01:02:43,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:43,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:02:43,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:43,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:02:43,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:02:43,780 INFO L87 Difference]: Start difference. First operand 1407 states and 1628 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:43,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:43,885 INFO L93 Difference]: Finished difference Result 1092 states and 1188 transitions. [2024-11-24 01:02:43,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:02:43,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-24 01:02:43,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:43,888 INFO L225 Difference]: With dead ends: 1092 [2024-11-24 01:02:43,888 INFO L226 Difference]: Without dead ends: 1092 [2024-11-24 01:02:43,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:02:43,889 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 56 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2522 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 [2024-11-24 01:02:43,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2522 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:02:43,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2024-11-24 01:02:43,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1090. [2024-11-24 01:02:43,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 726 states have (on average 1.6253443526170799) internal successors, (1180), 1085 states have internal predecessors, (1180), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1186 transitions. [2024-11-24 01:02:43,904 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1186 transitions. Word has length 55 [2024-11-24 01:02:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:43,905 INFO L471 AbstractCegarLoop]: Abstraction has 1090 states and 1186 transitions. [2024-11-24 01:02:43,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:43,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1186 transitions. [2024-11-24 01:02:43,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-24 01:02:43,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:43,906 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] [2024-11-24 01:02:43,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 01:02:44,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:44,106 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr414ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:44,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:44,107 INFO L85 PathProgramCache]: Analyzing trace with hash -355383530, now seen corresponding path program 1 times [2024-11-24 01:02:44,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:44,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044384494] [2024-11-24 01:02:44,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:44,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:44,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:44,109 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:44,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-24 01:02:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:44,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:02:44,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:44,319 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:02:44,320 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:02:44,320 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:02:44,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2024-11-24 01:02:44,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:02:44,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2024-11-24 01:02:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:44,471 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:02:44,471 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:44,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044384494] [2024-11-24 01:02:44,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044384494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:44,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:44,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:02:44,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636829165] [2024-11-24 01:02:44,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:44,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:02:44,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:44,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:02:44,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:02:44,473 INFO L87 Difference]: Start difference. First operand 1090 states and 1186 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:44,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:44,975 INFO L93 Difference]: Finished difference Result 1562 states and 1688 transitions. [2024-11-24 01:02:44,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:02:44,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2024-11-24 01:02:44,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:44,981 INFO L225 Difference]: With dead ends: 1562 [2024-11-24 01:02:44,981 INFO L226 Difference]: Without dead ends: 1559 [2024-11-24 01:02:44,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:02:44,981 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 1852 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:44,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1858 Valid, 3170 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:02:44,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2024-11-24 01:02:45,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1036. [2024-11-24 01:02:45,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 672 states have (on average 1.6726190476190477) internal successors, (1124), 1031 states have internal predecessors, (1124), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1130 transitions. [2024-11-24 01:02:45,010 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1130 transitions. Word has length 58 [2024-11-24 01:02:45,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:45,010 INFO L471 AbstractCegarLoop]: Abstraction has 1036 states and 1130 transitions. [2024-11-24 01:02:45,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:45,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1130 transitions. [2024-11-24 01:02:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-24 01:02:45,012 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:45,012 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] [2024-11-24 01:02:45,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-24 01:02:45,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:45,213 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:45,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:45,213 INFO L85 PathProgramCache]: Analyzing trace with hash 54784503, now seen corresponding path program 1 times [2024-11-24 01:02:45,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:45,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229408012] [2024-11-24 01:02:45,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:45,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:45,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:45,216 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:45,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-24 01:02:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:45,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:02:45,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:45,484 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 [2024-11-24 01:02:46,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:02:46,150 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 [2024-11-24 01:02:46,171 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:02:46,171 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 [2024-11-24 01:02:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:46,177 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:02:46,177 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:46,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229408012] [2024-11-24 01:02:46,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229408012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:46,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:46,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:02:46,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415186247] [2024-11-24 01:02:46,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:46,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:02:46,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:46,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:02:46,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:02:46,178 INFO L87 Difference]: Start difference. First operand 1036 states and 1130 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:49,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:49,237 INFO L93 Difference]: Finished difference Result 998 states and 1092 transitions. [2024-11-24 01:02:49,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:02:49,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-24 01:02:49,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:49,241 INFO L225 Difference]: With dead ends: 998 [2024-11-24 01:02:49,242 INFO L226 Difference]: Without dead ends: 998 [2024-11-24 01:02:49,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:02:49,242 INFO L435 NwaCegarLoop]: 450 mSDtfsCounter, 616 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:49,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 913 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-24 01:02:49,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-24 01:02:49,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 961. [2024-11-24 01:02:49,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 635 states have (on average 1.5937007874015747) internal successors, (1012), 956 states have internal predecessors, (1012), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:49,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1018 transitions. [2024-11-24 01:02:49,256 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1018 transitions. Word has length 63 [2024-11-24 01:02:49,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:49,256 INFO L471 AbstractCegarLoop]: Abstraction has 961 states and 1018 transitions. [2024-11-24 01:02:49,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:49,256 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1018 transitions. [2024-11-24 01:02:49,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 01:02:49,257 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:49,257 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] [2024-11-24 01:02:49,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-24 01:02:49,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:49,457 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:49,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:49,458 INFO L85 PathProgramCache]: Analyzing trace with hash -2089651903, now seen corresponding path program 1 times [2024-11-24 01:02:49,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:49,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550678038] [2024-11-24 01:02:49,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:49,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:49,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:49,460 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:49,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-24 01:02:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:49,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:02:49,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:49,717 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 [2024-11-24 01:02:49,735 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 [2024-11-24 01:02:49,775 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 [2024-11-24 01:02:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:49,786 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:02:49,786 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:49,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550678038] [2024-11-24 01:02:49,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550678038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:49,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:49,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:02:49,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932006439] [2024-11-24 01:02:49,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:49,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:02:49,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:49,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:02:49,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:02:49,787 INFO L87 Difference]: Start difference. First operand 961 states and 1018 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:52,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:52,295 INFO L93 Difference]: Finished difference Result 960 states and 1017 transitions. [2024-11-24 01:02:52,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:02:52,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-24 01:02:52,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:52,297 INFO L225 Difference]: With dead ends: 960 [2024-11-24 01:02:52,298 INFO L226 Difference]: Without dead ends: 960 [2024-11-24 01:02:52,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:02:52,298 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 2 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:52,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2187 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 01:02:52,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2024-11-24 01:02:52,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 960. [2024-11-24 01:02:52,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 635 states have (on average 1.5921259842519686) internal successors, (1011), 955 states have internal predecessors, (1011), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:52,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1017 transitions. [2024-11-24 01:02:52,313 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1017 transitions. Word has length 68 [2024-11-24 01:02:52,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:52,314 INFO L471 AbstractCegarLoop]: Abstraction has 960 states and 1017 transitions. [2024-11-24 01:02:52,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:52,314 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1017 transitions. [2024-11-24 01:02:52,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 01:02:52,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:52,315 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] [2024-11-24 01:02:52,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-24 01:02:52,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:52,516 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:52,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:52,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2089651902, now seen corresponding path program 1 times [2024-11-24 01:02:52,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:52,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675104117] [2024-11-24 01:02:52,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:52,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:52,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:52,518 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:52,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-24 01:02:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:52,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 01:02:52,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:52,788 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 [2024-11-24 01:02:52,810 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 [2024-11-24 01:02:52,824 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 [2024-11-24 01:02:52,883 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 [2024-11-24 01:02:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:52,905 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:02:52,905 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:52,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675104117] [2024-11-24 01:02:52,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675104117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:52,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:52,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:02:52,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755789566] [2024-11-24 01:02:52,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:52,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:02:52,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:52,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:02:52,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:02:52,906 INFO L87 Difference]: Start difference. First operand 960 states and 1017 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:56,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:56,164 INFO L93 Difference]: Finished difference Result 959 states and 1016 transitions. [2024-11-24 01:02:56,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:02:56,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-24 01:02:56,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:56,167 INFO L225 Difference]: With dead ends: 959 [2024-11-24 01:02:56,167 INFO L226 Difference]: Without dead ends: 959 [2024-11-24 01:02:56,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:02:56,167 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 1 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:56,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2175 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-24 01:02:56,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2024-11-24 01:02:56,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2024-11-24 01:02:56,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 634 states have (on average 1.5930599369085174) internal successors, (1010), 954 states have internal predecessors, (1010), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:02:56,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1016 transitions. [2024-11-24 01:02:56,182 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1016 transitions. Word has length 68 [2024-11-24 01:02:56,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:56,182 INFO L471 AbstractCegarLoop]: Abstraction has 959 states and 1016 transitions. [2024-11-24 01:02:56,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:02:56,182 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1016 transitions. [2024-11-24 01:02:56,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-24 01:02:56,183 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:56,183 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:56,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-24 01:02:56,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:56,384 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:56,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:56,384 INFO L85 PathProgramCache]: Analyzing trace with hash 185950089, now seen corresponding path program 1 times [2024-11-24 01:02:56,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:56,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638884548] [2024-11-24 01:02:56,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:56,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:56,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:56,389 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:56,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-24 01:02:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:56,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:02:56,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:56,691 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:02:56,691 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:56,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638884548] [2024-11-24 01:02:56,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638884548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:02:56,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:02:56,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:02:56,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679720724] [2024-11-24 01:02:56,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:02:56,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:02:56,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:56,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:02:56,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:02:56,694 INFO L87 Difference]: Start difference. First operand 959 states and 1016 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 01:02:56,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:56,743 INFO L93 Difference]: Finished difference Result 962 states and 1020 transitions. [2024-11-24 01:02:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:02:56,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2024-11-24 01:02:56,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:56,756 INFO L225 Difference]: With dead ends: 962 [2024-11-24 01:02:56,756 INFO L226 Difference]: Without dead ends: 962 [2024-11-24 01:02:56,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:02:56,758 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 0 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:56,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2509 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:02:56,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-11-24 01:02:56,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 962. [2024-11-24 01:02:56,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 636 states have (on average 1.5927672955974843) internal successors, (1013), 957 states have internal predecessors, (1013), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-24 01:02:56,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1020 transitions. [2024-11-24 01:02:56,780 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1020 transitions. Word has length 76 [2024-11-24 01:02:56,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:56,781 INFO L471 AbstractCegarLoop]: Abstraction has 962 states and 1020 transitions. [2024-11-24 01:02:56,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 01:02:56,781 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1020 transitions. [2024-11-24 01:02:56,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-24 01:02:56,786 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:56,786 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:56,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-24 01:02:56,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:56,987 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:56,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:56,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1863025934, now seen corresponding path program 1 times [2024-11-24 01:02:56,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:56,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1120877551] [2024-11-24 01:02:56,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:02:56,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:56,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:56,990 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:56,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-24 01:02:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:02:57,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:02:57,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:02:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:57,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:02:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:02:57,405 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:02:57,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120877551] [2024-11-24 01:02:57,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120877551] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:02:57,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:02:57,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-24 01:02:57,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009802988] [2024-11-24 01:02:57,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:02:57,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:02:57,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:02:57,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:02:57,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:02:57,407 INFO L87 Difference]: Start difference. First operand 962 states and 1020 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-24 01:02:57,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:02:57,608 INFO L93 Difference]: Finished difference Result 974 states and 1037 transitions. [2024-11-24 01:02:57,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:02:57,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2024-11-24 01:02:57,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:02:57,612 INFO L225 Difference]: With dead ends: 974 [2024-11-24 01:02:57,612 INFO L226 Difference]: Without dead ends: 974 [2024-11-24 01:02:57,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:02:57,613 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 5 mSDsluCounter, 4171 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5009 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:02:57,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 5009 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:02:57,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2024-11-24 01:02:57,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 972. [2024-11-24 01:02:57,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 645 states have (on average 1.5937984496124031) internal successors, (1028), 966 states have internal predecessors, (1028), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-24 01:02:57,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1035 transitions. [2024-11-24 01:02:57,631 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1035 transitions. Word has length 77 [2024-11-24 01:02:57,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:02:57,631 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1035 transitions. [2024-11-24 01:02:57,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-24 01:02:57,632 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1035 transitions. [2024-11-24 01:02:57,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-24 01:02:57,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:02:57,633 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:02:57,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-24 01:02:57,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:57,833 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:02:57,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:02:57,834 INFO L85 PathProgramCache]: Analyzing trace with hash 397767113, now seen corresponding path program 2 times [2024-11-24 01:02:57,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:02:57,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111727898] [2024-11-24 01:02:57,834 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:02:57,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:02:57,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:02:57,836 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:02:57,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-24 01:03:23,486 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:03:23,486 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:03:23,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-24 01:03:23,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:03:23,637 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:03:23,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-24 01:03:23,645 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 [2024-11-24 01:03:23,689 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 [2024-11-24 01:03:23,700 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 [2024-11-24 01:03:23,833 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 [2024-11-24 01:03:23,840 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 [2024-11-24 01:03:24,064 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:03:24,064 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 62 treesize of output 57 [2024-11-24 01:03:24,074 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 [2024-11-24 01:03:24,135 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 [2024-11-24 01:03:24,142 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 [2024-11-24 01:03:24,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 01:03:24,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:03:24,415 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1270 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1271 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1270) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1271 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2024-11-24 01:03:24,421 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:03:24,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111727898] [2024-11-24 01:03:24,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111727898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:03:24,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [314155042] [2024-11-24 01:03:24,422 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:03:24,422 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:03:24,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:03:24,428 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:03:24,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-24 01:03:25,994 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:03:25,994 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:03:26,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:03:26,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:03:26,243 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:03:26,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:03:26,582 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:03:26,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [314155042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:03:26,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:03:26,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2024-11-24 01:03:26,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966340022] [2024-11-24 01:03:26,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:03:26,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-24 01:03:26,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:03:26,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-24 01:03:26,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=467, Unknown=1, NotChecked=44, Total=600 [2024-11-24 01:03:26,585 INFO L87 Difference]: Start difference. First operand 972 states and 1035 transitions. Second operand has 22 states, 21 states have (on average 6.857142857142857) internal successors, (144), 22 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 01:03:43,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:03:43,504 INFO L93 Difference]: Finished difference Result 992 states and 1059 transitions. [2024-11-24 01:03:43,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-24 01:03:43,505 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.857142857142857) internal successors, (144), 22 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 80 [2024-11-24 01:03:43,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:03:43,507 INFO L225 Difference]: With dead ends: 992 [2024-11-24 01:03:43,507 INFO L226 Difference]: Without dead ends: 982 [2024-11-24 01:03:43,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=320, Invalid=1845, Unknown=1, NotChecked=90, Total=2256 [2024-11-24 01:03:43,508 INFO L435 NwaCegarLoop]: 561 mSDtfsCounter, 624 mSDsluCounter, 8432 mSDsCounter, 0 mSdLazyCounter, 6593 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 8993 SdHoareTripleChecker+Invalid, 6612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 6593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:03:43,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 8993 Invalid, 6612 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 6593 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2024-11-24 01:03:43,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2024-11-24 01:03:43,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 980. [2024-11-24 01:03:43,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 654 states have (on average 1.5825688073394495) internal successors, (1035), 974 states have internal predecessors, (1035), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-24 01:03:43,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1042 transitions. [2024-11-24 01:03:43,540 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1042 transitions. Word has length 80 [2024-11-24 01:03:43,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:03:43,540 INFO L471 AbstractCegarLoop]: Abstraction has 980 states and 1042 transitions. [2024-11-24 01:03:43,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.857142857142857) internal successors, (144), 22 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 01:03:43,540 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1042 transitions. [2024-11-24 01:03:43,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-24 01:03:43,541 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:03:43,541 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:03:43,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-24 01:03:43,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-24 01:03:43,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:03:43,942 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:03:43,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:03:43,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1439256280, now seen corresponding path program 1 times [2024-11-24 01:03:43,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:03:43,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800912392] [2024-11-24 01:03:43,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:03:43,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:03:43,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:03:43,945 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:03:43,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-24 01:03:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:03:44,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-24 01:03:44,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:03:44,564 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:03:44,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:03:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:03:45,335 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:03:45,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800912392] [2024-11-24 01:03:45,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800912392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:03:45,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:03:45,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-24 01:03:45,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538580013] [2024-11-24 01:03:45,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:03:45,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-24 01:03:45,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:03:45,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-24 01:03:45,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-24 01:03:45,337 INFO L87 Difference]: Start difference. First operand 980 states and 1042 transitions. Second operand has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-24 01:03:47,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:03:47,605 INFO L93 Difference]: Finished difference Result 1004 states and 1081 transitions. [2024-11-24 01:03:47,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-24 01:03:47,606 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 86 [2024-11-24 01:03:47,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:03:47,609 INFO L225 Difference]: With dead ends: 1004 [2024-11-24 01:03:47,609 INFO L226 Difference]: Without dead ends: 998 [2024-11-24 01:03:47,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-24 01:03:47,611 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 19 mSDsluCounter, 10839 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 11676 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:03:47,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 11676 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 01:03:47,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-24 01:03:47,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 998. [2024-11-24 01:03:47,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 672 states have (on average 1.5744047619047619) internal successors, (1058), 992 states have internal predecessors, (1058), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-24 01:03:47,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1065 transitions. [2024-11-24 01:03:47,627 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1065 transitions. Word has length 86 [2024-11-24 01:03:47,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:03:47,627 INFO L471 AbstractCegarLoop]: Abstraction has 998 states and 1065 transitions. [2024-11-24 01:03:47,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-24 01:03:47,627 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1065 transitions. [2024-11-24 01:03:47,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-24 01:03:47,628 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:03:47,629 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:03:47,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-24 01:03:47,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:03:47,829 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:03:47,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:03:47,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1616898072, now seen corresponding path program 2 times [2024-11-24 01:03:47,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:03:47,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370171736] [2024-11-24 01:03:47,830 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:03:47,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:03:47,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:03:47,832 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:03:47,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-24 01:04:33,863 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:04:33,863 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:04:33,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-24 01:04:33,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:04:34,039 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:04:34,039 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 [2024-11-24 01:04:34,055 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 [2024-11-24 01:04:34,467 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:04:34,467 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 [2024-11-24 01:04:34,512 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 [2024-11-24 01:04:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-24 01:04:34,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:04:34,744 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-24 01:04:34,744 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 [2024-11-24 01:04:34,795 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:04:34,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370171736] [2024-11-24 01:04:34,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370171736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:04:34,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [811469226] [2024-11-24 01:04:34,796 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:04:34,796 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:04:34,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:04:34,798 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:04:34,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-24 01:04:36,822 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:04:36,822 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:04:36,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-24 01:04:36,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:04:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:04:37,812 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:04:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:04:40,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [811469226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:04:40,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:04:40,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 26, 26] total 60 [2024-11-24 01:04:40,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842827302] [2024-11-24 01:04:40,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:04:40,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-24 01:04:40,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:04:40,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-24 01:04:40,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=702, Invalid=3074, Unknown=6, NotChecked=0, Total=3782 [2024-11-24 01:04:40,382 INFO L87 Difference]: Start difference. First operand 998 states and 1065 transitions. Second operand has 60 states, 59 states have (on average 3.0508474576271185) internal successors, (180), 59 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 01:05:15,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:15,163 INFO L93 Difference]: Finished difference Result 1039 states and 1138 transitions. [2024-11-24 01:05:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-24 01:05:15,164 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 3.0508474576271185) internal successors, (180), 59 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 98 [2024-11-24 01:05:15,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:15,166 INFO L225 Difference]: With dead ends: 1039 [2024-11-24 01:05:15,166 INFO L226 Difference]: Without dead ends: 1035 [2024-11-24 01:05:15,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3606 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=3766, Invalid=15966, Unknown=8, NotChecked=0, Total=19740 [2024-11-24 01:05:15,169 INFO L435 NwaCegarLoop]: 561 mSDtfsCounter, 649 mSDsluCounter, 16821 mSDsCounter, 0 mSdLazyCounter, 11985 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 17382 SdHoareTripleChecker+Invalid, 12035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 11985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:15,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 17382 Invalid, 12035 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 11985 Invalid, 0 Unknown, 0 Unchecked, 26.0s Time] [2024-11-24 01:05:15,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-11-24 01:05:15,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1031. [2024-11-24 01:05:15,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 706 states have (on average 1.5623229461756374) internal successors, (1103), 1025 states have internal predecessors, (1103), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-24 01:05:15,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1110 transitions. [2024-11-24 01:05:15,183 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1110 transitions. Word has length 98 [2024-11-24 01:05:15,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:05:15,183 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1110 transitions. [2024-11-24 01:05:15,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 3.0508474576271185) internal successors, (180), 59 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 01:05:15,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1110 transitions. [2024-11-24 01:05:15,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-24 01:05:15,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:05:15,185 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] [2024-11-24 01:05:15,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2024-11-24 01:05:15,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-24 01:05:15,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:15,585 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:05:15,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:05:15,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1731614654, now seen corresponding path program 1 times [2024-11-24 01:05:15,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:05:15,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370697888] [2024-11-24 01:05:15,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:15,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:15,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:05:15,588 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:05:15,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-24 01:05:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:16,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-24 01:05:16,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:16,120 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 [2024-11-24 01:05:16,255 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:05:16,255 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 [2024-11-24 01:05:16,272 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 [2024-11-24 01:05:16,738 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:05:16,739 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 31 treesize of output 32 [2024-11-24 01:05:16,804 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:05:16,805 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 [2024-11-24 01:05:16,859 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 [2024-11-24 01:05:16,883 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:05:16,883 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:05:16,954 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-24 01:05:16,955 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 [2024-11-24 01:05:16,964 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem38#1.base| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2508) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2024-11-24 01:05:16,976 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2508) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-24 01:05:17,400 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2554 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2554)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_2508) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-24 01:05:17,403 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:05:17,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370697888] [2024-11-24 01:05:17,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370697888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:05:17,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [839685799] [2024-11-24 01:05:17,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:17,403 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:05:17,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:05:17,405 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:05:17,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-24 01:05:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:20,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-24 01:05:21,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:21,010 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 [2024-11-24 01:05:21,187 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-24 01:05:21,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-24 01:05:21,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 01:05:21,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-24 01:05:22,690 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:05:22,690 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 [2024-11-24 01:05:22,867 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:05:22,867 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 [2024-11-24 01:05:22,895 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 [2024-11-24 01:05:22,953 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:05:22,953 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:05:23,055 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2977 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2977) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2024-11-24 01:05:23,490 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3023 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2977 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3023))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2977)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:05:23,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [839685799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:05:23,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:05:23,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2024-11-24 01:05:23,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940073282] [2024-11-24 01:05:23,497 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:05:23,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 01:05:23,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:05:23,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 01:05:23,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=20, NotChecked=200, Total=600 [2024-11-24 01:05:23,499 INFO L87 Difference]: Start difference. First operand 1031 states and 1110 transitions. Second operand has 18 states, 15 states have (on average 6.466666666666667) internal successors, (97), 18 states have internal predecessors, (97), 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) [2024-11-24 01:05:30,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:30,199 INFO L93 Difference]: Finished difference Result 1032 states and 1111 transitions. [2024-11-24 01:05:30,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:05:30,200 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 6.466666666666667) internal successors, (97), 18 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 123 [2024-11-24 01:05:30,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:30,202 INFO L225 Difference]: With dead ends: 1032 [2024-11-24 01:05:30,202 INFO L226 Difference]: Without dead ends: 1032 [2024-11-24 01:05:30,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=20, NotChecked=210, Total=650 [2024-11-24 01:05:30,203 INFO L435 NwaCegarLoop]: 562 mSDtfsCounter, 544 mSDsluCounter, 3511 mSDsCounter, 0 mSdLazyCounter, 2895 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 4073 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:30,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 4073 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2895 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-24 01:05:30,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2024-11-24 01:05:30,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 1030. [2024-11-24 01:05:30,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 706 states have (on average 1.5609065155807365) internal successors, (1102), 1024 states have internal predecessors, (1102), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-24 01:05:30,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1109 transitions. [2024-11-24 01:05:30,218 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1109 transitions. Word has length 123 [2024-11-24 01:05:30,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:05:30,218 INFO L471 AbstractCegarLoop]: Abstraction has 1030 states and 1109 transitions. [2024-11-24 01:05:30,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 6.466666666666667) internal successors, (97), 18 states have internal predecessors, (97), 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) [2024-11-24 01:05:30,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1109 transitions. [2024-11-24 01:05:30,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-24 01:05:30,220 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:05:30,220 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] [2024-11-24 01:05:30,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2024-11-24 01:05:30,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-24 01:05:30,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:30,621 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:05:30,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:05:30,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1731614655, now seen corresponding path program 1 times [2024-11-24 01:05:30,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:05:30,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585788546] [2024-11-24 01:05:30,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:30,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:30,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:05:30,624 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:05:30,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-24 01:05:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:31,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-24 01:05:31,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:31,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-24 01:05:31,422 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:05:31,422 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 [2024-11-24 01:05:31,431 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 [2024-11-24 01:05:31,465 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 [2024-11-24 01:05:31,487 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 [2024-11-24 01:05:31,638 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 [2024-11-24 01:05:31,644 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 [2024-11-24 01:05:32,666 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:05:32,666 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 [2024-11-24 01:05:32,681 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 [2024-11-24 01:05:32,825 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:05:32,825 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 [2024-11-24 01:05:32,839 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 [2024-11-24 01:05:32,879 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 [2024-11-24 01:05:32,888 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 [2024-11-24 01:05:32,920 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:05:32,920 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:05:33,227 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3493 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_3493) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3493 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3492 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_3493) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_3492) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-24 01:05:34,693 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3585 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3584 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3493 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3492 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3584))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3585) .cse0 v_ArrVal_3493) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_3492) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_3585 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3584 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3493 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3585) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3584) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3493) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv4 32)) (bvadd .cse3 (_ bv8 32))))))) is different from false [2024-11-24 01:05:34,704 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:05:34,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585788546] [2024-11-24 01:05:34,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585788546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:05:34,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [573097109] [2024-11-24 01:05:34,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:34,704 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:05:34,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:05:34,707 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:05:34,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-24 01:05:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:38,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-24 01:05:38,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:38,567 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 [2024-11-24 01:05:38,576 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 [2024-11-24 01:05:39,193 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:05:39,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-24 01:05:39,205 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 12 treesize of output 14 [2024-11-24 01:05:39,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 01:05:39,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 01:05:39,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-24 01:05:39,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-24 01:05:40,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:40,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-24 01:05:40,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2024-11-24 01:05:40,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2024-11-24 01:05:41,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:05:41,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 22 [2024-11-24 01:05:41,027 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:05:41,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-24 01:05:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:05:41,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:05:41,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 239 treesize of output 167 [2024-11-24 01:05:49,849 WARN L286 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 48 DAG size of output: 48 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:06:34,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [573097109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:06:34,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:06:34,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2024-11-24 01:06:34,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341443304] [2024-11-24 01:06:34,618 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:06:34,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:06:34,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:06:34,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:06:34,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=558, Unknown=17, NotChecked=98, Total=756 [2024-11-24 01:06:34,620 INFO L87 Difference]: Start difference. First operand 1030 states and 1109 transitions. Second operand has 20 states, 17 states have (on average 8.941176470588236) internal successors, (152), 20 states have internal predecessors, (152), 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) [2024-11-24 01:07:50,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:07:50,509 INFO L93 Difference]: Finished difference Result 1233 states and 1329 transitions. [2024-11-24 01:07:50,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:07:50,510 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.941176470588236) internal successors, (152), 20 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 123 [2024-11-24 01:07:50,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:07:50,512 INFO L225 Difference]: With dead ends: 1233 [2024-11-24 01:07:50,512 INFO L226 Difference]: Without dead ends: 1233 [2024-11-24 01:07:50,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 230 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 56.8s TimeCoverageRelationStatistics Valid=166, Invalid=947, Unknown=17, NotChecked=130, Total=1260 [2024-11-24 01:07:50,513 INFO L435 NwaCegarLoop]: 459 mSDtfsCounter, 1225 mSDsluCounter, 4534 mSDsCounter, 0 mSdLazyCounter, 7168 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 4993 SdHoareTripleChecker+Invalid, 7186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 7168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:07:50,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 4993 Invalid, 7186 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 7168 Invalid, 0 Unknown, 0 Unchecked, 72.6s Time] [2024-11-24 01:07:50,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2024-11-24 01:07:50,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1029. [2024-11-24 01:07:50,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 706 states have (on average 1.5594900849858357) internal successors, (1101), 1023 states have internal predecessors, (1101), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-24 01:07:50,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1108 transitions. [2024-11-24 01:07:50,528 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1108 transitions. Word has length 123 [2024-11-24 01:07:50,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:07:50,529 INFO L471 AbstractCegarLoop]: Abstraction has 1029 states and 1108 transitions. [2024-11-24 01:07:50,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.941176470588236) internal successors, (152), 20 states have internal predecessors, (152), 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) [2024-11-24 01:07:50,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1108 transitions. [2024-11-24 01:07:50,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-24 01:07:50,531 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:07:50,531 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] [2024-11-24 01:07:50,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-24 01:07:50,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2024-11-24 01:07:50,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 01:07:50,932 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:07:50,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:07:50,932 INFO L85 PathProgramCache]: Analyzing trace with hash -319707217, now seen corresponding path program 1 times [2024-11-24 01:07:50,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:07:50,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603038143] [2024-11-24 01:07:50,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:50,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:50,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:07:50,934 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:07:50,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-24 01:07:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:51,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-24 01:07:51,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:07:52,701 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:07:52,701 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 [2024-11-24 01:07:52,790 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 [2024-11-24 01:07:54,735 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:07:54,735 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 [2024-11-24 01:07:55,063 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:07:55,064 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 44 treesize of output 43 [2024-11-24 01:07:55,670 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:07:55,670 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 [2024-11-24 01:07:55,765 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 [2024-11-24 01:07:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:07:55,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:07:56,462 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4495) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-24 01:07:56,577 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-24 01:07:56,577 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 37 treesize of output 36 [2024-11-24 01:07:56,616 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4494 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem38#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4494))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4495)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-24 01:07:56,661 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4494 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_4494))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4495)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-24 01:07:58,040 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4541 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4494 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4541)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_4494))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4495)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-24 01:07:58,050 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:07:58,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603038143] [2024-11-24 01:07:58,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603038143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:07:58,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [968823683] [2024-11-24 01:07:58,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:58,050 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:07:58,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:07:58,053 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:07:58,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-24 01:08:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:08:23,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-24 01:08:23,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:08:23,299 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 [2024-11-24 01:08:24,430 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-24 01:08:24,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-24 01:08:24,709 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 [2024-11-24 01:08:25,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-24 01:08:30,418 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:08:30,418 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 [2024-11-24 01:08:31,206 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:08:31,206 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 [2024-11-24 01:08:31,866 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:08:31,867 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 [2024-11-24 01:08:31,997 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 33 treesize of output 15 [2024-11-24 01:08:32,328 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:08:32,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:08:32,737 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4979 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4979))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4495)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-24 01:08:32,781 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4979 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4979))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4495)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2024-11-24 01:08:34,077 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4979 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5026 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5026))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4979)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4495)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:08:34,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [968823683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:08:34,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:08:34,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-11-24 01:08:34,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115188195] [2024-11-24 01:08:34,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:08:34,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:08:34,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:08:34,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:08:34,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=381, Unknown=15, NotChecked=322, Total=812 [2024-11-24 01:08:34,089 INFO L87 Difference]: Start difference. First operand 1029 states and 1108 transitions. Second operand has 20 states, 17 states have (on average 6.294117647058823) internal successors, (107), 20 states have internal predecessors, (107), 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) [2024-11-24 01:08:56,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:08:56,634 INFO L93 Difference]: Finished difference Result 1030 states and 1109 transitions. [2024-11-24 01:08:56,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:08:56,635 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 6.294117647058823) internal successors, (107), 20 states have internal predecessors, (107), 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 [2024-11-24 01:08:56,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:08:56,637 INFO L225 Difference]: With dead ends: 1030 [2024-11-24 01:08:56,637 INFO L226 Difference]: Without dead ends: 1030 [2024-11-24 01:08:56,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 241 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=103, Invalid=416, Unknown=15, NotChecked=336, Total=870 [2024-11-24 01:08:56,638 INFO L435 NwaCegarLoop]: 561 mSDtfsCounter, 539 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 2201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:08:56,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 3142 Invalid, 2201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 22.3s Time] [2024-11-24 01:08:56,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2024-11-24 01:08:56,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1028. [2024-11-24 01:08:56,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 706 states have (on average 1.5580736543909348) internal successors, (1100), 1022 states have internal predecessors, (1100), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-24 01:08:56,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1107 transitions. [2024-11-24 01:08:56,654 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1107 transitions. Word has length 126 [2024-11-24 01:08:56,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:08:56,655 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1107 transitions. [2024-11-24 01:08:56,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 6.294117647058823) internal successors, (107), 20 states have internal predecessors, (107), 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) [2024-11-24 01:08:56,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1107 transitions. [2024-11-24 01:08:56,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-24 01:08:56,656 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:08:56,656 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] [2024-11-24 01:08:56,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2024-11-24 01:08:56,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-24 01:08:57,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:08:57,057 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:08:57,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:08:57,057 INFO L85 PathProgramCache]: Analyzing trace with hash -319707216, now seen corresponding path program 1 times [2024-11-24 01:08:57,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:08:57,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59084462] [2024-11-24 01:08:57,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:08:57,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:08:57,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:08:57,062 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:08:57,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-24 01:08:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:08:57,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-24 01:08:57,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:08:58,781 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:08:58,781 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 [2024-11-24 01:08:58,817 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 [2024-11-24 01:08:58,938 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 [2024-11-24 01:08:58,956 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 [2024-11-24 01:08:59,515 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 [2024-11-24 01:08:59,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-24 01:09:03,653 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:09:03,653 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 [2024-11-24 01:09:03,682 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 [2024-11-24 01:09:04,306 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:09:04,307 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 [2024-11-24 01:09:04,327 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 [2024-11-24 01:09:04,841 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:09:04,842 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 62 treesize of output 57 [2024-11-24 01:09:04,898 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 [2024-11-24 01:09:05,013 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 [2024-11-24 01:09:05,032 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 [2024-11-24 01:09:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:09:05,228 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:09:05,813 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5512 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5512) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:09:05,888 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5512 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5512) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd (_ bv12 32) .cse2))))))) is different from false [2024-11-24 01:09:06,079 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5509) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5510) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5512 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5510))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5509) .cse2 v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5512) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-24 01:09:06,206 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5512 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5510))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5509) .cse1 v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5512) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5509) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5510) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-24 01:09:10,449 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5604 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5512 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5603))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_5510))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5604) .cse0 v_ArrVal_5509) .cse1 v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5512) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5604 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5603))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5604) .cse6 v_ArrVal_5509) (select (select (store .cse7 .cse6 v_ArrVal_5510) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5511))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd (_ bv12 32) .cse5)))))) is different from false [2024-11-24 01:09:10,479 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:09:10,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59084462] [2024-11-24 01:09:10,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59084462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:09:10,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1819831703] [2024-11-24 01:09:10,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:10,480 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:09:10,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:09:10,481 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:09:10,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-24 01:09:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:36,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-24 01:09:36,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:09:36,146 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 [2024-11-24 01:09:37,142 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 [2024-11-24 01:09:37,252 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:09:37,252 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 [2024-11-24 01:09:37,330 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 [2024-11-24 01:09:37,350 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 [2024-11-24 01:09:37,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-24 01:09:37,665 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 [2024-11-24 01:09:41,662 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:09:41,662 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 [2024-11-24 01:09:41,683 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 [2024-11-24 01:09:42,112 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:09:42,112 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 [2024-11-24 01:09:42,167 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 [2024-11-24 01:09:42,441 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:09:42,442 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 [2024-11-24 01:09:42,463 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 [2024-11-24 01:09:42,595 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 [2024-11-24 01:09:42,623 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 [2024-11-24 01:09:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:09:42,657 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:09:43,233 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6091) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-24 01:09:43,385 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6088 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6089 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6089) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6088) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6088 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6089 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6088))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6089) .cse2 v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_6091) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-24 01:09:43,499 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6088 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6089 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6089) (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6088) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6088 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6089 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6088))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6089) .cse3 v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_6091) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-24 01:09:47,936 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6183 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6182 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6088 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6089 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6182))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_6088))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6183) .cse0 v_ArrVal_6089) .cse1 v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_6091) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_6183 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6182 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6088 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6089 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6182))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6183) .cse6 v_ArrVal_6089) (select (select (store .cse7 .cse6 v_ArrVal_6088) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6090))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd (_ bv12 32) .cse5)))))) is different from false [2024-11-24 01:09:47,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1819831703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:09:47,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:09:47,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-11-24 01:09:47,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457429642] [2024-11-24 01:09:47,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:09:47,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:09:47,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:09:47,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:09:47,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=151, Unknown=14, NotChecked=288, Total=506 [2024-11-24 01:09:47,957 INFO L87 Difference]: Start difference. First operand 1028 states and 1107 transitions. Second operand has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 11 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 01:10:19,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:19,373 INFO L93 Difference]: Finished difference Result 1027 states and 1106 transitions. [2024-11-24 01:10:19,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:10:19,374 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 11 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2024-11-24 01:10:19,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:19,377 INFO L225 Difference]: With dead ends: 1027 [2024-11-24 01:10:19,377 INFO L226 Difference]: Without dead ends: 1027 [2024-11-24 01:10:19,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=92, Invalid=310, Unknown=14, NotChecked=396, Total=812 [2024-11-24 01:10:19,378 INFO L435 NwaCegarLoop]: 560 mSDtfsCounter, 547 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 2908 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:19,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 2369 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2908 Invalid, 0 Unknown, 0 Unchecked, 30.1s Time] [2024-11-24 01:10:19,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2024-11-24 01:10:19,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1027. [2024-11-24 01:10:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 706 states have (on average 1.5566572237960339) internal successors, (1099), 1021 states have internal predecessors, (1099), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-24 01:10:19,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1106 transitions. [2024-11-24 01:10:19,387 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1106 transitions. Word has length 126 [2024-11-24 01:10:19,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:19,387 INFO L471 AbstractCegarLoop]: Abstraction has 1027 states and 1106 transitions. [2024-11-24 01:10:19,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 11 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 01:10:19,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1106 transitions. [2024-11-24 01:10:19,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 01:10:19,388 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:19,389 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:19,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-24 01:10:19,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-11-24 01:10:19,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 01:10:19,790 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:10:19,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:19,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1840095557, now seen corresponding path program 1 times [2024-11-24 01:10:19,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:10:19,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755678142] [2024-11-24 01:10:19,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:19,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:19,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:19,792 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:19,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-24 01:10:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:20,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-24 01:10:20,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:20,621 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 [2024-11-24 01:10:21,780 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:10:21,780 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 [2024-11-24 01:10:21,872 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 [2024-11-24 01:10:23,943 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:10:23,943 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 [2024-11-24 01:10:24,373 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:10:24,374 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 [2024-11-24 01:10:24,824 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:10:24,824 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 [2024-11-24 01:10:25,227 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:10:25,227 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 [2024-11-24 01:10:25,522 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 [2024-11-24 01:10:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:10:25,694 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:10:26,003 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-24 01:10:26,003 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 [2024-11-24 01:10:26,039 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem40#1.base| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6637) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2024-11-24 01:10:26,090 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_6637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-24 01:10:26,155 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6636)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-24 01:10:26,201 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6636))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-24 01:10:26,267 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6635))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6636)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-24 01:10:26,316 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6635))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6636)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-24 01:10:27,681 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6683 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6683))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6635)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6636)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-24 01:10:27,692 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:10:27,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755678142] [2024-11-24 01:10:27,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755678142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:27,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [774340384] [2024-11-24 01:10:27,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:27,692 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:10:27,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:10:27,694 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:10:27,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2024-11-24 01:11:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:00,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-24 01:11:00,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:11:00,538 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 [2024-11-24 01:11:01,985 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-24 01:11:01,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-24 01:11:02,264 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 [2024-11-24 01:11:03,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-24 01:11:07,808 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:11:07,808 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 [2024-11-24 01:11:08,597 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:11:08,598 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 [2024-11-24 01:11:09,236 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:11:09,237 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 44 treesize of output 43 [2024-11-24 01:11:09,858 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:11:09,858 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 [2024-11-24 01:11:09,994 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 [2024-11-24 01:11:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:11:10,346 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:11:10,434 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7138) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-24 01:11:10,491 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7138) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-24 01:11:10,582 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7137))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:11:10,640 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7137))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:11:10,713 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7136 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7136))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7137)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:11:10,762 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7136 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7136))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7137)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:11:12,272 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7136 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7184))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7136)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7137)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:11:12,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [774340384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:11:12,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:11:12,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2024-11-24 01:11:12,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748025682] [2024-11-24 01:11:12,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:11:12,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-24 01:11:12,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:11:12,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-24 01:11:12,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=435, Unknown=14, NotChecked=770, Total=1332 [2024-11-24 01:11:12,287 INFO L87 Difference]: Start difference. First operand 1027 states and 1106 transitions. Second operand has 22 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 22 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 01:11:49,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:49,343 INFO L93 Difference]: Finished difference Result 1028 states and 1107 transitions. [2024-11-24 01:11:49,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 01:11:49,343 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 22 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 129 [2024-11-24 01:11:49,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:49,345 INFO L225 Difference]: With dead ends: 1028 [2024-11-24 01:11:49,345 INFO L226 Difference]: Without dead ends: 1028 [2024-11-24 01:11:49,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=122, Invalid=472, Unknown=14, NotChecked=798, Total=1406 [2024-11-24 01:11:49,346 INFO L435 NwaCegarLoop]: 560 mSDtfsCounter, 534 mSDsluCounter, 4505 mSDsCounter, 0 mSdLazyCounter, 3554 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 5065 SdHoareTripleChecker+Invalid, 3560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:49,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 5065 Invalid, 3560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 3554 Invalid, 0 Unknown, 0 Unchecked, 36.7s Time] [2024-11-24 01:11:49,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2024-11-24 01:11:49,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1026. [2024-11-24 01:11:49,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 706 states have (on average 1.5552407932011332) internal successors, (1098), 1020 states have internal predecessors, (1098), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-24 01:11:49,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1105 transitions. [2024-11-24 01:11:49,357 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1105 transitions. Word has length 129 [2024-11-24 01:11:49,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:49,357 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1105 transitions. [2024-11-24 01:11:49,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 22 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 01:11:49,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1105 transitions. [2024-11-24 01:11:49,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 01:11:49,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:49,358 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:11:49,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-24 01:11:49,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2024-11-24 01:11:49,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 01:11:49,759 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-24 01:11:49,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:49,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1840095558, now seen corresponding path program 1 times [2024-11-24 01:11:49,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:11:49,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681094675] [2024-11-24 01:11:49,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:49,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:11:49,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:11:49,762 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:11:49,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-24 01:11:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:50,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-24 01:11:50,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:11:51,744 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 [2024-11-24 01:11:51,870 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:11:51,870 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 [2024-11-24 01:11:52,042 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 [2024-11-24 01:11:52,084 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 [2024-11-24 01:11:52,667 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 [2024-11-24 01:11:52,687 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 [2024-11-24 01:11:56,709 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:11:56,710 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 [2024-11-24 01:11:56,731 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 [2024-11-24 01:11:57,326 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:11:57,326 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 [2024-11-24 01:11:57,386 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 [2024-11-24 01:11:57,867 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:11:57,867 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 [2024-11-24 01:11:57,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-24 01:11:58,433 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:11:58,433 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 [2024-11-24 01:11:58,455 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 [2024-11-24 01:11:58,595 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 [2024-11-24 01:11:58,633 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 [2024-11-24 01:11:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:11:58,832 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:11:59,433 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:11:59,512 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-24 01:11:59,649 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7685))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7684) .cse0 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7684) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7685) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse3) (bvadd (_ bv24 32) .cse3)))))) is different from false [2024-11-24 01:11:59,740 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_7685))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_7684) .cse1 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_7684) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_7685) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse4) (bvadd (_ bv24 32) .cse4))))))) is different from false [2024-11-24 01:11:59,918 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7682 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7683 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7682))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_7685))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7683) .cse0 v_ArrVal_7684) .cse1 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_7682 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7683 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7682))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7683) .cse6 v_ArrVal_7684) (select (select (store .cse7 .cse6 v_ArrVal_7685) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7687))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse5) (bvadd (_ bv24 32) .cse5)))))) is different from false [2024-11-24 01:12:08,438 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7682 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7779 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7778 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7683 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7779))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_7682))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7778) .cse1 v_ArrVal_7683) .cse2 v_ArrVal_7684) (select (select (store .cse3 .cse2 v_ArrVal_7685) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_7687))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7682 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7779 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7778 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7683 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7779))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_7682))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_7685))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7778) .cse6 v_ArrVal_7683) .cse7 v_ArrVal_7684) .cse8 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-11-24 01:12:08,482 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:12:08,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681094675] [2024-11-24 01:12:08,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681094675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:12:08,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1448430777] [2024-11-24 01:12:08,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:12:08,482 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:12:08,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:12:08,484 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:12:08,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5e318f-5e44-4f20-9470-994e170517c5/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2024-11-24 01:16:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:16:00,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-24 01:16:00,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:16:00,740 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 [2024-11-24 01:16:02,987 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 [2024-11-24 01:16:03,192 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:16:03,192 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 [2024-11-24 01:16:03,278 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 [2024-11-24 01:16:03,365 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 [2024-11-24 01:16:04,022 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 [2024-11-24 01:16:04,063 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 [2024-11-24 01:16:12,155 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:16:12,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-24 01:16:12,196 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 [2024-11-24 01:16:12,994 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:16:12,995 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 [2024-11-24 01:16:13,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-24 01:16:13,667 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:16:13,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-24 01:16:13,785 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 [2024-11-24 01:16:14,336 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:16:14,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-24 01:16:14,415 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 [2024-11-24 01:16:14,655 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 [2024-11-24 01:16:14,736 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 [2024-11-24 01:16:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:16:14,798 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:16:15,180 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8283) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8283 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8283) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:16:15,320 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8283) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8283 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8283) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-24 01:16:15,564 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8283 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8281))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8280) .cse0 v_ArrVal_8283) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_8283 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8280) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8281) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8283) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv20 32)) (bvadd .cse3 (_ bv24 32))))))) is different from false [2024-11-24 01:16:15,739 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8283 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8280) (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8281) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8283) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8283 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8281))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8280) .cse3 v_ArrVal_8283) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-24 01:16:16,031 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8283 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8279 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8278 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8278))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8281))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8279) .cse0 v_ArrVal_8280) .cse1 v_ArrVal_8283) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8283 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8279 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8278 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8278))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8279) .cse6 v_ArrVal_8280) (select (select (store .cse7 .cse6 v_ArrVal_8281) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8283))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse5) (bvadd (_ bv24 32) .cse5)))))) is different from false [2024-11-24 01:16:16,221 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_8283 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8279 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8278 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8278))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8279) .cse2 v_ArrVal_8280) (select (select (store .cse3 .cse2 v_ArrVal_8281) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_8283))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8283 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8279 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8278 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8278))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_8281))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8279) .cse5 v_ArrVal_8280) .cse6 v_ArrVal_8283) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))) is different from false